Todas las herramientas

369 herramientas gratuitas — PDF, imagen, vídeo, audio, texto, desarrollo, calculadoras y más.

Word CounterCount words, characters, sentences and paragraphs as you type.⚡ Browser
Character CounterCount characters with and without spaces (emoji-aware).⚡ Browser
Sentence CounterCount sentences in English, Urdu and Sindhi text.⚡ Browser
Paragraph CounterCount paragraphs separated by blank lines.⚡ Browser
Case ConverterConvert text to upper, lower, title, sentence, camel, snake and kebab case.⚡ Browser
Remove Duplicate LinesDelete repeated lines and keep the first occurrence.⚡ Browser
Text SorterSort lines A-Z, Z-A, by length, numerically or shuffle them.⚡ Browser
Text ReverserReverse text by characters, words or lines.⚡ Browser
Whitespace CleanerTrim, collapse spaces and remove blank lines or line breaks.⚡ Browser
Find and ReplaceFind text and replace it, with regex, case and whole-word options.⚡ Browser
Text CompareCompare two texts line by line and see what was added or removed.⚡ Browser
Word Frequency CounterFind the most used words in any text.⚡ Browser
Reading Time CalculatorEstimate how long your text takes to read or speak.⚡ Browser
Lorem Ipsum GeneratorGenerate placeholder paragraphs, sentences or words.⚡ Browser
Text to SlugTurn titles into clean, URL-friendly slugs.⚡ Browser
Unicode InspectorSee code points, UTF-8 bytes and character properties of any text.⚡ Browser
Text Encoder / DecoderEncode or decode text as Base64, URL, HTML, hex, binary or Unicode escapes.⚡ Browser
Line NumberingAdd or remove line numbers from any text.⚡ Browser
JSON Formatter & Tree ExplorerBeautify, validate and explore JSON. Collapsible tree view with search.⚡ Browser
JSON ValidatorCheck whether JSON is valid and see where an error is.⚡ Browser
JSON MinifierRemove whitespace from JSON to make it smaller.⚡ Browser
XML FormatterValidate and pretty-print XML documents.⚡ Browser
HTML FormatterIndent and tidy HTML markup.⚡ Browser
CSS MinifierStrip comments and whitespace from CSS.⚡ Browser
JavaScript MinifierCompress and mangle JavaScript with Terser (runs locally).⚡ Browser
Base64 Encode / DecodeEncode or decode Base64 with full UTF-8 (Urdu, emoji) support.⚡ Browser
URL Encode / DecodePercent-encode or decode URLs and query strings.⚡ Browser
UUID GeneratorGenerate random UUIDs (v4) or time-ordered UUIDs (v7).⚡ Browser
Hash GeneratorCreate SHA-256, SHA-512, SHA-1 and MD5 hashes of text or files.⚡ Browser
Regex TesterTest regular expressions with live match highlighting and groups.⚡ Browser
JWT DecoderDecode a JSON Web Token's header and payload (does not verify the signature).⚡ Browser
Unix Timestamp ConverterConvert Unix timestamps to dates and dates to timestamps.⚡ Browser
Color ConverterConvert colors between HEX, RGB, HSL, HSV and CMYK.⚡ Browser
Meta Tag GeneratorGenerate SEO, Open Graph and Twitter Card meta tags.⚡ Browser
Age CalculatorFind exact age in years, months and days, plus your next birthday.⚡ Browser
Date DifferenceCount the years, months, days and working days between two dates.⚡ Browser
Percentage CalculatorPercent of a number, percent change, and reverse percentages.⚡ Browser
Discount CalculatorWork out sale prices, savings and tax after one or two discounts.⚡ Browser
EMI / Loan CalculatorMonthly instalment, total interest and a full repayment schedule.⚡ Browser
BMI CalculatorBody mass index with WHO adult categories, in metric or imperial units.⚡ Browser
Length ConverterConvert between millimetres, metres, kilometres, inches, feet, yards and miles.⚡ Browser
Weight ConverterConvert grams, kilograms, pounds, ounces, tonnes, stones and tola.⚡ Browser
Temperature ConverterConvert Celsius, Fahrenheit and Kelvin.⚡ Browser
Area ConverterConvert square metres, feet, acres, hectares, marla and kanal.⚡ Browser
Time ConverterConvert seconds, minutes, hours, days, weeks, months and years.⚡ Browser
Currency ConverterConvert money using an exchange rate that you enter (source and date shown).⚡ Browser
Password GeneratorCreate strong random passwords using your browser's secure random generator.⚡ Browser
Random Number GeneratorPick random whole numbers or decimals in any range.⚡ Browser
StopwatchPrecise stopwatch with lap times.⚡ Browser
Countdown TimerSet a timer in hours, minutes and seconds with an alarm sound.⚡ Browser
UUID Batch GeneratorGenerate up to 1000 UUIDs at once and copy or download them.⚡ Browser
Dice RollerRoll one or many dice (d4 to d100) with fair crypto randomness.⚡ Browser
Color Palette GeneratorBuild harmonious color palettes from a base color or randomly.⚡ Browser
Countdown Date WidgetCount down the days, hours and minutes to any event.⚡ Browser
IMEI ValidatorCheck an IMEI number's format and Luhn checksum, or compute a missing check digit.⚡ Browser
What Is My IP?Show your public IP address (asks permission before contacting api.ipify.org).⚡ Browser
Image ResizerResize images by pixels or percentage with aspect-ratio lock.⚡ Browser
Image CompressorShrink photo file size with adjustable JPG or WebP quality.⚡ Browser
JPG to PNGConvert JPG images to lossless PNG.⚡ Browser
PNG to JPGConvert PNG to JPG with a background color for transparency.⚡ Browser
WebP ConverterConvert any image to WebP (smaller files for the web).⚡ Browser
Image CropperCrop by dragging on the image or typing exact pixel values.⚡ Browser
Image RotatorRotate by 90 degrees or any angle, and flip horizontally or vertically.⚡ Browser
Image WatermarkAdd a text or logo watermark with position, size and opacity controls.⚡ Browser
Passport Photo MakerCrop to passport/ID sizes at 300 DPI and build a print sheet of copies.⚡ Browser
Favicon GeneratorCreate favicon.ico and PNG icons (16 to 512 px) from any image, as a ZIP.⚡ Browser
Color PickerClick any pixel of an image to get its color, plus the dominant colors.⚡ Browser
Image to Base64Turn an image into a Base64 data URI for HTML, CSS or JSON.⚡ Browser
Bulk Image ConverterConvert and resize many images at once and download them as a ZIP.⚡ Browser
Merge PDFCombine several PDF files into one document in the order you choose.⚡ Browser
Split PDFSplit a PDF by page ranges, every N pages, or into single pages (ZIP).⚡ Browser
Compress PDFReduce PDF size: lossless clean-up or image-based compression with quality control.⚡ Browser
PDF to JPGConvert PDF pages to JPG or PNG images at the resolution you need.⚡ Browser
JPG to PDFTurn JPG, PNG and other images into a single PDF.⚡ Browser
Rotate PDFRotate all pages or selected pages by 90, 180 or 270 degrees.⚡ Browser
Reorder PDF PagesRearrange pages visually with thumbnails and save the new order.⚡ Browser
Extract PDF PagesPick pages and save them as a new PDF.⚡ Browser
Delete PDF PagesRemove unwanted pages from a PDF.⚡ Browser
Add WatermarkStamp text across PDF pages with size, angle, color and opacity controls.⚡ Browser
Add Page NumbersNumber the pages of a PDF with a format, position and starting number.⚡ Browser
Protect PDFAdd a password so the PDF cannot be opened without it (standard PDF encryption).⚡ Browser
Sign PDFPlace a drawn, typed or image signature on a page (visual signature).⚡ Browser
PDF EditorAdd text, white-out boxes, highlights and images on top of PDF pages.⚡ Browser
Unlock PDFRemove the open-password from a PDF you own, when you know the password.⚡ Browser
QR Code GeneratorCreate QR codes for links, text, email and more, with colors and error correction.⚡ Browser
WiFi QR GeneratorLet guests join your WiFi by scanning a code - no typing the password.⚡ Browser
WhatsApp QR GeneratorMake a QR code that opens a WhatsApp chat with a ready-made message.⚡ Browser
vCard QR GeneratorShare a contact card: scanning saves name, phone, email and more.⚡ Browser
Barcode GeneratorCreate Code 128, Code 39, EAN, UPC, ITF and more with check-digit validation.⚡ Browser
Bulk Barcode GeneratorGenerate many barcodes from a list or CSV and download them as a ZIP of PNGs.⚡ Browser
Barcode ScannerRead barcodes (EAN, UPC, Code 128, Code 39...) from a picture or your camera.⚡ Browser
QR ScannerRead QR codes from a picture or your camera.⚡ Browser
ISBN Barcode GeneratorValidate an ISBN-10 or ISBN-13 and create its EAN-13 barcode (with optional price add-on).⚡ Browser
Data Matrix GeneratorCreate Data Matrix 2D codes used on small parts, labels and pharmaceuticals.⚡ Browser
PDF417 GeneratorCreate PDF417 stacked barcodes used on tickets, IDs and shipping documents.⚡ Browser
Label DesignerDesign address or product labels with text and a barcode/QR, and print them on label sheets.⚡ Browser
Invoice GeneratorCreate professional invoices with items, discount, tax and totals.⚡ Browser
Quotation GeneratorPrepare quotes and estimates for clients, with a validity date.⚡ Browser
Receipt GeneratorIssue a payment receipt with items, payment method and amount received.⚡ Browser
Purchase Order GeneratorCreate purchase orders for suppliers with items, delivery date and ship-to address.⚡ Browser
Timesheet GeneratorRecord daily hours for a week or month, with breaks, totals and optional pay.⚡ Browser
Product Label MakerMake product labels with name, price, dates and a barcode or QR code.⚡ Browser
Shipping Label MakerPrint courier-style shipping labels with sender, receiver and a tracking barcode.⚡ Browser
Price Tag GeneratorCreate shelf and product price tags with big prices, old price and barcode.⚡ Browser
Business Card MakerDesign a business card and print a sheet of 10 with an optional QR code.⚡ Browser
Certificate GeneratorCreate a certificate of achievement or appreciation to print.⚡ Browser
GST / VAT CalculatorAdd or remove sales tax from an amount at any rate.⚡ Browser
Profit Margin & MarkupMargin, markup and profit from cost and selling price.⚡ Browser
Break-even CalculatorHow many units you must sell to cover fixed costs.⚡ Browser
Simple & Compound InterestInterest earned over time with chosen compounding.⚡ Browser
Savings Goal CalculatorHow long to reach a target by saving every month.⚡ Browser
Tip & Bill SplitSplit a bill with tip between any number of people.⚡ Browser
GPA CalculatorWeighted GPA from course grades and credit hours.⚡ Browser
Marks & Percentage CalculatorPercentage and letter grade from obtained and total marks.⚡ Browser
Multiplication TablePrint a times table for any number.⚡ Browser
Roman Numeral ConverterConvert numbers 1-3999 to Roman numerals and back.⚡ Browser
Number to WordsWrite a whole number in English words (international or lakh/crore).⚡ Browser
Pomodoro TimerFocus and break cycles with a visible countdown.⚡ Browser
WCAG Contrast CheckerCheck text and background colours against WCAG AA and AAA.⚡ Browser
PX / REM / EM / PT ConverterConvert CSS units using your base font size.⚡ Browser
Colour Blindness SimulatorSee how a colour looks with common colour vision deficiencies.⚡ Browser
Text to SpeechRead text aloud with the voices installed in your browser.⚡ Browser
Robots.txt GeneratorBuild a robots.txt with allow/disallow rules and sitemap links.⚡ Browser
Sitemap.xml GeneratorTurn a list of URLs into a valid sitemap.xml.⚡ Browser
UTM Link BuilderAdd campaign tracking parameters to a URL.⚡ Browser
Schema.org JSON-LD GeneratorCreate FAQ, Article, Organization or Product structured data.⚡ Browser
Keyword Density CheckerCount how often words and phrases appear in your page text.⚡ Browser
Heading Outline CheckerPaste HTML and check h1-h6 structure and missing alt text.⚡ Browser
301 Redirect Generator (.htaccess)Generate Apache redirect rules from old and new paths.⚡ Browser
CSV to JSONConvert CSV with a header row into a JSON array.⚡ Browser
JSON to CSVConvert a JSON array of objects into CSV.⚡ Browser
Markdown to HTMLConvert Markdown to clean, escaped HTML with a preview.⚡ Browser
Subnet / CIDR CalculatorNetwork, broadcast, mask and host range for an IPv4 block.⚡ Browser
IP Address ConverterConvert an IPv4 address to integer, hex and binary.⚡ Browser
URL ParserSplit a URL into protocol, host, path, query and fragment.⚡ Browser
HTTP Status Code ReferenceLook up what common HTTP status codes mean.⚡ Browser
MAC Address FormatterValidate a MAC address and show it in common formats.⚡ Browser
iFrame TesterTest any URL in an iframe. Check embedding restrictions (X-Frame-Options / CSP). Desktop and mobile previews.⚡ Browser
Video CompressorMake a video file smaller with H.264 (MP4) or VP8 (WebM). Choose a quality level or an exact target size. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video ConverterConvert video between MP4, WebM, MKV, MOV, AVI and OGV, with an optional fast stream-copy mode. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video TrimmerCut a section out of a video by start and end time. Fast cut keeps quality; precise cut re-encodes for frame accuracy. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video MergerJoin several videos into one MP4, in the order you choose. Clips are scaled to a common size and re-encoded. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video ResizerChange a video's resolution: pick a preset height, a percentage or an exact width and height. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video CropperCrop a video to a region you select on the picture, or enter exact pixels. Presets for square, 16:9, 9:16 and 4:3. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video RotatorRotate a video by 90, 180 or 270 degrees, or flip it horizontally or vertically. Re-encodes to MP4. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video Speed ChangerMake a video slow motion or fast forward from 0.25x to 8x, with the audio pitch kept natural or removed. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video to GIFTurn a section of a video into an animated GIF with an optimised colour palette. Choose start, length, frame rate and width. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
GIF to VideoConvert an animated GIF into a much smaller MP4 or WebM video that plays everywhere. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video to MP3Extract the soundtrack of a video as an MP3 file. Pick the bitrate and stereo or mono. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video Thumbnail ExtractorGrab a still image from a video at an exact time, or generate several evenly spaced candidates to pick a thumbnail from. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Batch Frame ExtractorExtract many frames from a video at once (every N seconds, every Nth frame or a frames-per-second rate) and download them as a ZIP. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video Metadata InspectorSee everything inside a video file: container, codecs, resolution, frame rate, bitrate, audio, subtitles, chapters and tags. Read-only; nothing is changed.⚡ Browser
FPS ConverterChange a video's frame rate (for example 60 to 30 fps, or 24 to 30 fps) by dropping, duplicating or blending frames. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video WatermarkStamp a text or logo watermark on a video: choose position, size and opacity, and optionally show it only during part of the video. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Subtitle BurnerBurn SRT or VTT subtitles permanently into a video. Text is drawn by your browser, so any language your device can display works, including right-to-left scripts. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Subtitle ExtractorPull embedded text subtitle tracks out of MKV, MP4 and WebM files and save them as SRT, WebVTT or ASS. Picture-based subtitles (DVD, Blu-ray) cannot be converted. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Audio ReplacerSwap a video's soundtrack for another audio file, or mix the new audio with the original. The picture is copied without re-encoding when possible. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video MuteRemove the audio track from a video. The picture is copied without re-encoding, so it is fast and lossless.⚡ Browser
Video DenoiserReduce grain and sensor noise in low-light video with FFmpeg's classic hqdn3d filter. This is a standard denoise filter, not AI; strong settings can soften fine detail. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Video EnhancerImprove a video with brightness, contrast, saturation, gamma and sharpening controls, plus optional auto-contrast. Standard colour and sharpen filters, not AI. Runs in your browser, nothing is uploaded; long or HD videos take a while.⚡ Browser
Audio ConverterConvert audio between WAV (16/24/32-bit) and MP3, change sample rate and channels. Works offline in your browser.⚡ Browser
MP3 CompressorMake audio files smaller by re-encoding to MP3 at a lower bitrate, optionally mono or lower sample rate, or to a target file size.⚡ Browser
Audio TrimmerCut audio: keep only a selected part, or delete a part from the middle. Pick the region on the waveform or type exact times.⚡ Browser
Audio MergerJoin several audio files into one, in the order you choose, with optional crossfade, gaps and loudness matching.⚡ Browser
Audio Speed ChangerSpeed up or slow down audio from 0.25x to 4x, either keeping the pitch (time-stretch) or changing pitch like a tape.⚡ Browser
Audio Pitch ChangerRaise or lower the pitch by up to 12 semitones without changing the duration (WSOLA time-stretch plus resampling).⚡ Browser
Volume BoosterMake quiet audio louder (or quieter) by up to +30 dB, with an optional peak limiter that prevents harsh clipping.⚡ Browser
Loudness NormalizerNormalize audio to a target peak level or to a target loudness in LUFS (ITU-R BS.1770 approximation) for podcasts, streaming and video.⚡ Browser
Silence RemoverDetect and cut silent gaps in audio (or trim only the start and end). Adjustable threshold, minimum length and padding.⚡ Browser
Audio Fade In / Fade OutAdd a fade-in at the start and a fade-out at the end of audio (or of a selected part) with linear, sine, exponential or S-curve shapes.⚡ Browser
Audio ReverserPlay audio backwards: reverse a whole file or just a selected part.⚡ Browser
Noise ReducerReduce steady background noise (hiss, hum, fans) with a spectral gate that learns the noise from a quiet part of your recording.⚡ Browser
Karaoke Maker (Center Channel Remover)Reduce vocals by cancelling sound that is identical in the left and right channels. Not true vocal separation: works only on some stereo recordings.⚡ Browser
Voice EnhancerClean up spoken audio: remove low rumble (high-pass), add presence with EQ, even out volume with a compressor and set a consistent level.⚡ Browser
BPM & Key DetectorEstimate the tempo (BPM) and musical key of a song or loop. Estimates only: best for steady-tempo music with clear beats.⚡ Browser
Spectrogram ViewerDraw a spectrogram (frequency over time) of your audio with adjustable FFT size, scale and colours, and save it as a PNG image.⚡ Browser
Audio SplitterSplit one audio file into several parts at fixed lengths, equal parts, silences or your own markers, and download them as a ZIP.⚡ Browser
Voice RecorderRecord from your microphone in the browser and save as WAV or MP3. Pause and resume, live level meter, nothing is uploaded.⚡ Browser
Audio Metadata EditorEdit tags in MP3 (ID3v2: title, artist, album, year, genre, track, comment, cover art) and WAV files (INFO) without re-encoding the audio.⚡ Browser
Waveform EditorEdit audio visually: select, cut, copy, paste, delete, silence, reverse, fade, amplify and normalize with undo and zoom. Export as WAV or MP3.⚡ Browser
PDF to TextExtract the text of a PDF as plain text you can copy or save as .txt. Text-based PDFs only (use OCR for scans).⚡ Browser
PDF to WordConvert a text-based PDF into an editable .docx with headings and paragraphs. Text only: tables, columns, images and exact layout are not reproduced.⚡ Browser
PDF to ExcelPull simple text tables out of a PDF into an .xlsx workbook. Works for text-based PDFs with clear columns; complex or scanned tables will need manual cleanup.⚡ Browser
OCR PDFRecognise the text in a scanned PDF with an OCR engine that runs in your browser. English only. Download the text as .txt.⚡ Browser
Scanned PDF to Searchable PDFAdd an invisible, searchable text layer to a scanned PDF using in-browser OCR (English). The pages look exactly the same, but you can search and copy text.⚡ Browser
Word to PDFConvert a .docx document to PDF in your browser. Simple documents only: headings, paragraphs, lists, tables and PNG/JPEG images; Latin text only; layout is approximate.⚡ Browser
Excel to PDFPrint the sheets of an .xlsx, .xls or .csv file to PDF tables. Values as displayed (formulas use their last saved results); no charts, images or cell colours; Latin text only.⚡ Browser
PowerPoint to PDFConvert a .pptx presentation to a PDF with one page per slide: slide text, backgrounds, simple shapes, tables and PNG/JPEG pictures. Approximate layout; no charts, animations or custom fonts; Latin text only.⚡ Browser
PDF to PowerPointTurn each PDF page into a PowerPoint slide. Pages become pictures (looks identical, but text is not editable). Download a .pptx.⚡ Browser
PDF CompareCompare two PDFs: line-by-line text differences (added / removed) plus a visual page-by-page difference score. Works on text-based PDFs.⚡ Browser
Secure PDF RedactionPermanently black out text and areas in a PDF. Redacted pages are converted to pictures with the boxes burned in, so the hidden text is truly gone (verified). Draw boxes or search for words.⚡ Browser
PDF RepairTry to recover a damaged or truncated PDF: rebuilds the file structure and copies every readable page into a clean new PDF. Reports what could and could not be saved.⚡ Browser
PDF Form FillerFill in the fillable (AcroForm) fields of a PDF - text boxes, checkboxes, drop-downs and radio buttons - and optionally flatten the result so it cannot be edited.⚡ Browser
Extract Embedded ImagesSave the pictures embedded in a PDF (photos, logos, scans) as PNG files in a ZIP. Pictures are decoded and saved losslessly as PNG; vector graphics and text are not images and are not extracted.⚡ Browser
PDF Metadata EditorView and edit a PDF's title, author, subject, keywords, creator, producer and dates, or strip all metadata for privacy. The rest of the file is left untouched.⚡ Browser
PDF GrayscaleConvert a colour PDF to black-and-white (grayscale) for printing. Pages are re-drawn as grayscale pictures; selectable text is kept as an invisible layer for text-based PDFs.⚡ Browser
PDF Crop & Page SizeTrim margins (manually or by detecting the white border) and/or change the paper size to A4, Letter and more. Content is scaled to fit and stays vector.⚡ Browser
XLSX to CSVConvert an Excel workbook (XLSX, XLS, ODS) to CSV: one sheet, or every sheet as a ZIP.⚡ Browser
CSV to XLSXTurn a CSV or TSV file (or pasted text) into a real Excel .xlsx workbook.⚡ Browser
Excel Sheets MergerCombine several sheets of one workbook into a single sheet, matching columns by header or by position.⚡ Browser
Excel File MergerMerge several Excel or CSV files into one workbook: stack the rows into one sheet, or keep each sheet separate.⚡ Browser
Excel Duplicate RemoverFind and remove duplicate rows in an Excel or CSV sheet, comparing all columns or only the ones you pick.⚡ Browser
CSV CleanerTidy a CSV: trim spaces, drop empty rows/columns, fix ragged rows, remove invisible characters and duplicates.⚡ Browser
CSV SplitterSplit a large CSV into smaller files by row count, number of parts or column value. Download all parts as a ZIP.⚡ Browser
CSV Column MapperRename, reorder, drop and fill columns to turn one CSV/Excel layout into another. Save the mapping as JSON to reuse it.⚡ Browser
Excel Formula CheckerStatic check of Excel formulas (pasted or from a workbook): brackets, quotes, unknown functions, argument counts, bad references. It does not calculate them.⚡ Browser
Spreadsheet Diff CheckerCompare two Excel/CSV sheets and list added, removed and changed rows and cells, matched by key column or row position.⚡ Browser
Data Type DetectorProfile each column of a spreadsheet or CSV: detect integers, decimals, dates, booleans, emails, URLs and more, with null counts and ranges.⚡ Browser
Data ValidatorCheck a spreadsheet or CSV against rules per column (type, required, unique, range, pattern, allowed list) and export the problems.⚡ Browser
JSON to ExcelConvert JSON (array of objects, array of arrays, or an object of arrays) into an Excel .xlsx workbook.⚡ Browser
Excel to JSONConvert an Excel sheet (or all sheets) to JSON: an array of objects using the header row, or an array of arrays.⚡ Browser
XML to JSONConvert XML to JSON: attributes become @keys, repeated elements become arrays, with options for text and types.⚡ Browser
YAML to JSONConvert YAML (including multi-document files) to formatted JSON.⚡ Browser
JSON to YAMLConvert JSON to clean, readable YAML.⚡ Browser
Markdown to PDFTurn Markdown into a simple text PDF: headings, lists, tables, code, quotes and links. Latin characters only, no images.⚡ Browser
Word Document MergerMerge several .docx files into one, in your order, keeping text, formatting, lists, tables and images (OOXML-level merge).⚡ Browser
Advanced Image Format ConverterConvert images between PNG, JPG, WebP, AVIF, GIF, BMP, TIFF and ICO, with optional resize and ZIP download. Batch, private, in your browser.⚡ Browser
SVG to PNG ConverterRender an SVG (file or pasted code) to PNG, JPG or WebP at any size or scale. Scripts and external references are stripped first.⚡ Browser
Raster to SVG Converter (Image Tracer)Trace a PNG/JPG into an SVG made of real vector colour layers (posterised tracing). Best for logos, icons and flat artwork; photos become stylised illustrations.⚡ Browser
Image to PDF ConverterCombine JPG, PNG, WebP, GIF or BMP images into one PDF. Choose page size, orientation and margins, and reorder pages.⚡ Browser
Photo Collage MakerArrange 2 to 16 photos into a grid, row, column or hero layout with spacing, rounded corners and a background colour. Download as PNG or JPG.⚡ Browser
Meme GeneratorAdd classic top and bottom captions (plus an optional middle caption) to your own image. Choose font, size and colours, then download a PNG or JPG.⚡ Browser
YouTube Thumbnail MakerDesign a 1280 x 720 YouTube thumbnail: photo or gradient background, bold outlined headline, badge and a cut-out. Exports JPG under the 2 MB limit.⚡ Browser
Social Media Post DesignerCreate text-and-photo graphics at the right size for Instagram, Facebook, X, LinkedIn and Pinterest posts, stories and banners. Fully editable, exports PNG or JPG.⚡ Browser
GIF Maker (Images to Animated GIF)Turn a set of images into an animated GIF with frame delay, loop count, colour count, size and optional ping-pong playback.⚡ Browser
GIF CompressorMake animated GIFs smaller by reducing colours, scaling down, dropping frames and storing only the pixels that change between frames.⚡ Browser
GIF ResizerResize an animated GIF to an exact width and height or a percentage, keeping all frames, timing and looping.⚡ Browser
GIF Frame ExtractorSplit an animated GIF into its individual frames. Download single frames or all selected frames as PNG files in a ZIP.⚡ Browser
Photo Color Picker with MagnifierPick exact pixel colours from a photo with a magnifier loupe, save a palette of picks and copy HEX, RGB or HSL values.⚡ Browser
EXIF Data ViewerSee the hidden metadata in a photo: camera, lens, exposure, date, software and GPS location. Reads JPG, PNG and WebP locally, nothing is uploaded.⚡ Browser
EXIF Data Remover (Lossless)Strip GPS, camera, date and other hidden metadata from JPG, PNG and WebP photos without re-encoding. Pixels stay byte-for-byte identical, and the tool verifies it.⚡ Browser
Duplicate Image FinderFind exact and visually similar duplicate photos in a batch using SHA-256 and perceptual (dHash) fingerprints. Everything is compared in your browser.⚡ Browser
Image Comparison Slider (Before / After)Compare two images with a draggable before and after slider, horizontal or vertical, with custom labels. Download the comparison as a PNG.⚡ Browser
Color Palette Extractor from ImageExtract the main colours from any image using median-cut quantisation. Get HEX, RGB and share percentages, plus CSS, JSON or PNG palette downloads.⚡ Browser
Photo Enhancer (Auto Levels, Colour and Sharpen)Improve a photo with classic adjustments: auto levels, white balance, brightness, contrast, shadows, saturation, vibrance, warmth and sharpening. Not AI.⚡ Browser
Image Denoiser (Noise Reduction Filter)Reduce grain and colour noise with classic filters (chroma smoothing, edge-preserving bilateral, median) run in a background worker. Not AI.⚡ Browser
Image Upscaler (Lanczos Resampling)Enlarge an image 2x to 8x or to an exact width using high-quality Lanczos-3 resampling with optional sharpening. Classic interpolation, not AI super-resolution.⚡ Browser
CSS Gradient GeneratorBuild linear, radial and conic CSS gradients visually. Live preview, multi-stop, copy CSS.⚡ Browser
SVG ViewerPaste or upload SVG code to preview it securely. Sanitizes scripts. Download and zoom.⚡ Browser
YAML FormatterValidate, re-indent and sort YAML (multi-document supported), or convert it to JSON. Comments are not kept.⚡ Browser
SQL FormatterPretty-print SQL with indentation and keyword case for 20+ dialects (MySQL, PostgreSQL, SQL Server, BigQuery, SQLite...).⚡ Browser
SQL MinifierRemove comments and extra whitespace from SQL. Quoted strings and identifiers are left untouched.⚡ Browser
JSON DiffCompare two JSON documents and list every added, removed and changed value by path. Key order is ignored. Can export an RFC 6902 JSON Patch.⚡ Browser
JSONPath TesterRun JSONPath expressions (filters, wildcards, recursive descent) against your JSON and see matching values and their paths.⚡ Browser
JSON Schema ValidatorValidate JSON data against a JSON Schema (draft 2020-12 / 07 keywords) and see each error with its path. Runs without eval; only local $ref is supported.⚡ Browser
CSS FormatterBeautify minified or messy CSS: one declaration per line, consistent indentation, selectors split by comma. Handles @media, @keyframes and nesting.⚡ Browser
JavaScript BeautifierRe-indent and format minified or messy JavaScript. Pure formatting - it never changes your code. Plain modern JS (no JSX/TypeScript).⚡ Browser
HTML MinifierShrink HTML by removing comments and extra whitespace, optionally minifying inline CSS and JavaScript. <pre>, <textarea>, <script> and <style> content stays intact.⚡ Browser
Markdown EditorWrite Markdown with a live preview. Raw HTML is passed through an allow-list sanitizer, so scripts, event handlers and javascript: links never make it into the output. Export .md or .html.⚡ Browser
Markdown Table GeneratorBuild a Markdown (GFM) table in an editable grid, set column alignment, or paste CSV/TSV to convert. Pipes and line breaks are escaped for you.⚡ Browser
Cron Expression ParserExplain a cron expression in plain English and list its next run times (local time or UTC). Supports 5 or 6 fields, names, steps, @macros and L / # extras.⚡ Browser
Cron Expression BuilderBuild a cron expression with point-and-click fields, with a plain-English summary and the next run times.⚡ Browser
Base64 Image ViewerPaste a Base64 string or data:image URI and see the picture, its real format, dimensions and size. Download it as a file.⚡ Browser
JWT Signature VerifierCheck that a JSON Web Token's signature is valid using your secret (HS256/384/512) or public key / certificate / JWK (RS, PS, ES, EdDSA), and see its claims and expiry. Nothing is sent anywhere.⚡ Browser
URL Query String BuilderBuild or edit the query string of a URL with key/value rows. Values are percent-encoded correctly; existing parameters are parsed into rows.⚡ Browser
File Hash CheckerCompute the MD5, SHA-1, SHA-256, SHA-384 and SHA-512 checksums of any file and compare them with the hash published by the download page. The file never leaves your device.⚡ Browser
SRI Hash GeneratorGenerate Subresource Integrity (integrity="sha384-...") attributes and ready-to-paste <script> / <link> tags from a file or pasted code. Nothing is downloaded.⚡ Browser
HTML Live ViewerWrite HTML, CSS and JavaScript and see a live sandboxed preview. Split-screen editor. Sandboxed iframe — no access to page data.⚡ Browser
2FA Authenticator (TOTP)Generate time-based one-time passwords (TOTP) from a secret key. Compatible with Google Authenticator, Authy and others. Secrets never leave your browser.⚡ Browser
SEO Meta AnalyzerPaste page source to check title, description, canonical, robots, viewport, Open Graph and more. A checklist, not a score.⚡ Browser
SERP Preview (Desktop & Mobile)Type a title, URL and description to see a Google-style result with pixel-width truncation on desktop and mobile.⚡ Browser
Open Graph PreviewSee how a page looks when shared on Facebook, LinkedIn and chat apps, and check the required og: tags. Paste source or type the values.⚡ Browser
X (Twitter) Card PreviewPreview summary and large-image cards for X and check twitter: tags against the documented limits.⚡ Browser
Canonical Tag CheckerCheck rel=canonical in pasted HTML and headers: count, absolute URL, match with the page URL, conflicts with noindex and hreflang.⚡ Browser
Robots.txt TesterTest whether URLs are allowed or blocked for a crawler using RFC 9309 matching (longest match, * and $ wildcards).⚡ Browser
Sitemap XML ValidatorValidate a sitemap.xml or sitemap index: structure, URL format, limits, dates, priority, duplicates. Opens .xml and .xml.gz.⚡ Browser
Structured Data ValidatorCheck JSON-LD and microdata for syntax errors and missing properties for common types. Not Google's Rich Results Test.⚡ Browser
Salary CalculatorConvert a salary between hourly, daily, weekly, monthly and yearly pay using your own working hours.⚡ Browser
Salary Increase CalculatorWork out a raise: new salary, increase amount and percentage, from a percent, a new figure or an amount.⚡ Browser
Income Tax EstimatorEstimate tax from progressive slabs that YOU edit. The slabs shown are placeholders, not any country's law.⚡ Browser
Reverse Sales Tax CalculatorFind the pre-tax price and the tax inside a tax-inclusive total (single or combined rates).⚡ Browser
Mortgage CalculatorMonthly payment, total interest and a full amortization schedule (with optional extra payments). Download the schedule as CSV.⚡ Browser
Loan Comparison CalculatorCompare two or more loans side by side: monthly payment, total interest and total cost including fees.⚡ Browser
Debt Repayment CalculatorCompare the avalanche (highest rate first) and snowball (smallest balance first) payoff plans for several debts.⚡ Browser
Retirement Savings CalculatorProject your savings at retirement from your contributions and an expected return, in future and in today's money.⚡ Browser
Investment Return CalculatorGrow a lump sum with regular contributions at a chosen rate and compounding. See yearly balances and download CSV.⚡ Browser
Dividend Yield CalculatorDividend yield, yield on cost and yearly dividend income from price, payout and share count.⚡ Browser
Stock Average Price CalculatorAverage buy price across several purchases (with fees), profit at a current price, and shares needed to reach a target average.⚡ Browser
CAGR CalculatorCompound annual growth rate from start and end values, or the end value / years needed for a given rate.⚡ Browser
Inflation CalculatorPurchasing power over time using inflation rates or price-index values that YOU enter. No inflation data is built in.⚡ Browser
Electricity Consumption CalculatorEnergy use in kWh for each appliance from watts and hours, with cost at your tariff and each appliance's share.⚡ Browser
Electricity Bill CalculatorEstimate a bill from appliance usage or meter units, using your own tariff blocks, fixed charge and tax rate.⚡ Browser
Fuel Cost CalculatorTrip fuel and cost from distance, fuel economy (L/100 km, km/L or mpg) and fuel price, with optional cost split.⚡ Browser
Solar System Sizing CalculatorRough solar array, battery bank and inverter size from your daily energy use and your local peak sun hours.⚡ Browser
Battery Backup Time CalculatorHow long a battery bank runs a load through an inverter - or how big a battery you need for a target runtime.⚡ Browser
Live Currency ConverterConvert currencies with live reference rates from api.frankfurter.dev (loaded only after you agree), or enter your own rate manually.⚡ Browser
Crypto ConverterConvert between popular cryptocurrencies and fiat using prices from api.coingecko.com (loaded only after you agree) or a price you type.⚡ Browser
Overtime CalculatorOvertime pay from your hourly rate (or monthly salary), regular hours and overtime hours at the multipliers you enter.⚡ Browser
Payroll CalculatorGross-to-net pay for several employees using tax, pension and overtime rates that you enter. No tax tables are built in.⚡ Browser
Stock Profit CalculatorProfit, return and break-even sell price for a stock trade including the commission and tax rates you enter.⚡ Browser
Payslip GeneratorMake a printable payslip from the earnings and deductions you enter. Totals are added up for you; no tax is calculated.⚡ Browser
CV / Resume BuilderFill in a form to get a clean one-page CV you can print to PDF or download as Word (.docx) or text. Layout is a simple template.⚡ Browser
Cover Letter BuilderBuild a cover letter from a template filled with your details. "Generate draft" writes a first version you then edit freely. It is a template, not AI.⚡ Browser
Attendance Sheet MakerPrintable monthly attendance register with a column for every day, weekends marked, and totals. Download as CSV too.⚡ Browser
QR Attendance SheetPrintable attendance sheet with a QR code people scan to check in (your form link or session code) and optional personal QR codes per person.⚡ Browser
Gantt Chart MakerTurn a task list with start and end dates into a Gantt chart with progress bars. Export as PNG, SVG or CSV, or print.⚡ Browser
Project Timeline MakerCreate a milestone timeline from dates and titles: scaled or evenly spaced, exported as PNG, SVG or CSV, or printed.⚡ Browser
Inventory Sheet MakerBuild a stock list and download it as an Excel (.xlsx) file with live formulas for stock value and reorder status, or as CSV. Can open an existing .xlsx/.csv.⚡ Browser
Expense TrackerLog expenses, see totals by category and month, and export CSV. Entries are saved only in this browser (localStorage) - clear them any time.⚡ Browser
Meeting Minutes BuilderRecord attendees, agenda, decisions and action items into clean minutes. Print to PDF or download as Word, Markdown or text.⚡ Browser
Checklist BuilderMake a checklist, tick items off, reorder them, and print or download it. Optionally remembers the list in this browser.⚡ Browser
Signature PadDraw your signature with a mouse, finger or stylus and download it as a transparent PNG or SVG. This is an image of your handwriting, not a certified digital signature.⚡ Browser
Email Signature GeneratorCreate an HTML email signature (table based, inline styles) to copy into Gmail, Outlook or Apple Mail, with live preview and HTML download.⚡ Browser
Math Equation SolverSolve an equation in one unknown (linear, quadratic, polynomial or numeric) or evaluate an expression, with the steps shown. Uses its own parser - nothing is sent anywhere.⚡ Browser
Scientific CalculatorScientific calculator with trig, logs, powers, factorials, memory and history. Type or tap; evaluated by its own parser (no eval).⚡ Browser
Fraction CalculatorAdd, subtract, multiply, divide or raise fractions and mixed numbers - exact results, simplified, as a mixed number and decimal, with steps.⚡ Browser
Statistics CalculatorMean, median, mode, quartiles, standard deviation, variance, outliers, skewness and more for a list of numbers.⚡ Browser
Probability CalculatorProbability of one or two events (independent, mutually exclusive or with a known overlap), binomial probabilities, and combinations / permutations.⚡ Browser
Weighted Grade CalculatorWeighted average of your marks, plus the score you need on the final exam to reach a target grade.⚡ Browser
Citation GeneratorFormat a book, journal article or web page in APA 7, MLA 9, Chicago (author-date) or Harvard, with the in-text citation. Check against your style guide.⚡ Browser
Bibliography FormatterSort, de-duplicate, number and indent a reference list - or paste BibTeX entries and format them as APA, MLA, Chicago or Harvard.⚡ Browser
Readability AnalyzerFlesch Reading Ease, Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau and ARI scores for English text, with word, sentence and syllable counts.⚡ Browser
Dyslexia-Friendly ReaderPaste or open text and read it with adjustable font, spacing, line width, background tint and a reading ruler. Settings are remembered on this device.⚡ Browser
Batch Contrast CheckerCheck WCAG contrast for many colour pairs at once - or test every colour in a palette against every other. Exports CSV.⚡ Browser
Alt Text HelperA guided checklist for writing good image alt text, with a draft composer, a live quality check and an HTML snippet. It does not use AI to look at your image.⚡ Browser
Transcription EditorType a transcript while an audio or video file plays: pause and rewind with keyboard shortcuts, slow the speed, insert timestamps and export TXT, SRT or VTT. Does not transcribe automatically.⚡ Browser
Typing Speed TestMeasure your typing speed in words per minute and your accuracy on short passages or your own text. Timed (30/60/120 s) or until you finish.⚡ Browser
Spelling PracticePractise your own word list: hear each word spoken by your device (or see it briefly), type it, and review the words you missed.⚡ Browser
Flashcard MakerCreate flashcards, study them with flip, shuffle and "again" re-queue, import/export CSV, and print a card sheet. Cards are saved only in this browser.⚡ Browser
Quiz GeneratorTurn your own "question | answer" list into a multiple-choice quiz (wrong options come from your other answers), take it on screen, or print it with an answer key.⚡ Browser
Online NotepadAuto-saving notepad stored locally in your browser. Multiple notes, download, copy and import. Nothing is sent to the server.⚡ Browser
YouTube Title GeneratorTemplate-based YouTube title ideas from your topic and keyword, with a length check. Not AI: it fills proven title patterns.⚡ Browser
YouTube Tags GeneratorTurn your keywords into tag variants and keep them inside YouTube's 500-character tag limit.⚡ Browser
YouTube Description BuilderAssemble a YouTube description from intro, chapters, links and hashtags, with a live 5,000-character counter.⚡ Browser
Hashtag GeneratorExtract hashtags from your caption or script (keyword frequency, no AI) and check count limits for Instagram, YouTube, TikTok, X and more.⚡ Browser
YouTube Thumbnail PreviewUpload a thumbnail and see it at home-feed, sidebar and mobile card sizes with your title and duration badge, plus size and ratio checks.⚡ Browser
Video Chapter BuilderCheck YouTube chapter timestamps (start at 00:00, 3+ chapters, 10 s minimum each) and get a clean, correctly formatted list.⚡ Browser
SRT Subtitle EditorOpen an .srt or .vtt file, edit text and timing, shift, merge, split, check overlaps and export as .srt or .vtt.⚡ Browser
Unzip Files OnlineOpen a ZIP file and download any file inside it. No software needed.⚡ Browser
Create ZIP FilePut several files into one ZIP archive to share or email them easily.⚡ Browser
Screen RecorderRecord your screen, a window or a browser tab, with optional microphone, and download the video.⚡ Browser
Image Splitter (Grid)Cut an image into equal tiles, for example a 3x3 Instagram grid, and download them as a ZIP.⚡ Browser
Blur & Pixelate ImageBlur or pixelate a whole photo or just the areas you select, such as faces or number plates.⚡ Browser
Image Border & Rounded CornersAdd a coloured border, rounded corners or a circle crop to any image.⚡ Browser
Fancy Text GeneratorTurn plain text into bold, italic, cursive, gothic and other stylish fonts you can copy and paste anywhere.⚡ Browser
Morse Code TranslatorTranslate text to Morse code and Morse code back to text, and listen to it as sound.⚡ Browser
Text RepeaterRepeat any word or sentence many times, with new lines, spaces or your own separator.⚡ Browser
Number Base ConverterConvert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36, even very large numbers.⚡ Browser
Time Zone ConverterConvert a date and time between world time zones and see what time it is in several cities at once.⚡ Browser
Calorie & BMR CalculatorWork out your BMR and daily calorie needs to maintain, lose or gain weight (Mifflin-St Jeor formula).⚡ Browser
Speech to Text (Voice Typing)Speak and see your words typed live, in English, Urdu, Arabic, Hindi, French and many more languages.⚡ Browser
UK Take-Home Pay CalculatorSee your UK take-home pay after Income Tax, National Insurance, student loan and pension, yearly, monthly and weekly.⚡ Browser
Stamp Duty Calculator (England & NI)Work out Stamp Duty Land Tax for a home in England or Northern Ireland, for first-time buyers, movers and second homes.⚡ Browser
UK VAT CalculatorAdd or remove UK VAT at 20%, 5% or 0% and see the net, VAT and gross amounts instantly.⚡ Browser
UK Student Loan Repayment CalculatorSee how much you repay on Plan 1, 2, 4, 5 and Postgraduate student loans from your salary.⚡ Browser
UK Mortgage Affordability CalculatorEstimate how much you could borrow for a UK mortgage and the monthly repayments.⚡ Browser
YouTube Thumbnail DownloaderPaste a YouTube link to view and save the video thumbnail in HD, SD and smaller sizes.⚡ Browser
YouTube Earnings CalculatorEstimate YouTube ad income from your views and RPM, per day, month and year.⚡ Browser
YouTube Embed Code GeneratorCreate responsive YouTube embed code with start time, autoplay, mute, loop and privacy-enhanced mode.⚡ Browser
Social Media Character CounterCheck your post against the character limits of X, Instagram, TikTok, YouTube, LinkedIn and Facebook at once.⚡ Browser
Invoice Templates (UK)Professional invoice templates with UK VAT, company number and payment details. Fill in, pick a design and save as PDF.⚡ Browser
CV Templates (UK)Modern UK-style CV templates. Type your details, pick a design and download a print-ready PDF.⚡ Browser
Certificate TemplatesBeautiful printable certificates of achievement, completion and appreciation. Pick a design and save as PDF.⚡ Browser
Business Card TemplatesDesign business cards from ready-made templates and print a full A4 sheet of 10 cards (UK size 85 x 55 mm).⚡ Browser
Image ConverterConvert images between JPG, PNG, WebP, GIF, BMP, TIFF and ICO formats.☁️ Cloud
PDF to ImagesTurn every page of a PDF into a high-quality PNG image.☁️ Cloud
Background RemoverRemove the background from any photo automatically and get a transparent PNG.☁️ Cloud
Flip ImageFlip images horizontally or vertically in one click.☁️ Cloud
GrayscaleConvert colour images to black and white (grayscale).☁️ Cloud
GIF OptimizerMake GIF files smaller by reducing colours while keeping the animation.☁️ Cloud
HEIC to JPGConvert iPhone HEIC / HEIF photos to JPG that opens everywhere.☁️ Cloud
Image to Text (OCR)Extract text from photos, screenshots and scanned images (OCR) in English, Arabic, Urdu and more.☁️ Cloud
HTML to PDFConvert an HTML file into a clean, printable PDF document.☁️ Cloud
PDF to PDF/AConvert a PDF to PDF/A, the ISO standard for long-term archiving.☁️ Cloud
Flatten PDFFlatten form fields, comments and annotations so the PDF can no longer be edited.☁️ Cloud
Video ReverserPlay a video backwards: reverse the picture and the sound.☁️ Cloud
DNS CheckerLook up A, AAAA, MX, TXT, NS, CNAME and other DNS records for any domain. Powered by Cloudflare DNS-over-HTTPS.⚡ Browser
SSL Certificate CheckerCheck TLS/SSL certificate validity, expiry, issuer, SAN and chain for any domain.⚡ Browser
Domain Availability CheckerCheck if a domain is registered using RDAP (no paid WHOIS APIs). Shows registrar, expiry and nameservers.⚡ Browser