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Herramientas para desarrolladores
Herramientas para desarrolladores
Formatea, codifica, calcula hashes y prueba - 39 herramientas disponibles
JSON Formatter & Tree Explorer
Beautify, validate and explore JSON. Collapsible tree view with search.
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JSON Validator
Check whether JSON is valid and see where an error is.
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JSON Minifier
Remove whitespace from JSON to make it smaller.
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XML Formatter
Validate and pretty-print XML documents.
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HTML Formatter
Indent and tidy HTML markup.
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CSS Minifier
Strip comments and whitespace from CSS.
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JavaScript Minifier
Compress and mangle JavaScript with Terser (runs locally).
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Base64 Encode / Decode
Encode or decode Base64 with full UTF-8 (Urdu, emoji) support.
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URL Encode / Decode
Percent-encode or decode URLs and query strings.
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UUID Generator
Generate random UUIDs (v4) or time-ordered UUIDs (v7).
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Hash Generator
Create SHA-256, SHA-512, SHA-1 and MD5 hashes of text or files.
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Regex Tester
Test regular expressions with live match highlighting and groups.
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JWT Decoder
Decode a JSON Web Token's header and payload (does not verify the signature).
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Unix Timestamp Converter
Convert Unix timestamps to dates and dates to timestamps.
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Color Converter
Convert colors between HEX, RGB, HSL, HSV and CMYK.
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Meta Tag Generator
Generate SEO, Open Graph and Twitter Card meta tags.
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iFrame Tester
Test any URL in an iframe. Check embedding restrictions (X-Frame-Options / CSP). Desktop and mobile previews.
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CSS Gradient Generator
Build linear, radial and conic CSS gradients visually. Live preview, multi-stop, copy CSS.
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YAML Formatter
Validate, re-indent and sort YAML (multi-document supported), or convert it to JSON. Comments are not kept.
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SQL Formatter
Pretty-print SQL with indentation and keyword case for 20+ dialects (MySQL, PostgreSQL, SQL Server, BigQuery, SQLite...).
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SQL Minifier
Remove comments and extra whitespace from SQL. Quoted strings and identifiers are left untouched.
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JSON Diff
Compare two JSON documents and list every added, removed and changed value by path. Key order is ignored. Can export an RFC 6902 JSON Patch.
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JSONPath Tester
Run JSONPath expressions (filters, wildcards, recursive descent) against your JSON and see matching values and their paths.
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JSON Schema Validator
Validate 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.
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CSS Formatter
Beautify minified or messy CSS: one declaration per line, consistent indentation, selectors split by comma. Handles @media, @keyframes and nesting.
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JavaScript Beautifier
Re-indent and format minified or messy JavaScript. Pure formatting - it never changes your code. Plain modern JS (no JSX/TypeScript).
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HTML Minifier
Shrink HTML by removing comments and extra whitespace, optionally minifying inline CSS and JavaScript. <pre>, <textarea>, <script> and <style> content stays intact.
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Markdown Editor
Write 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.
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Markdown Table Generator
Build 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.
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Cron Expression Parser
Explain 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.
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Cron Expression Builder
Build a cron expression with point-and-click fields, with a plain-English summary and the next run times.
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Base64 Image Viewer
Paste a Base64 string or data:image URI and see the picture, its real format, dimensions and size. Download it as a file.
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JWT Signature Verifier
Check 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.
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URL Query String Builder
Build or edit the query string of a URL with key/value rows. Values are percent-encoded correctly; existing parameters are parsed into rows.
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File Hash Checker
Compute 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.
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SRI Hash Generator
Generate Subresource Integrity (integrity="sha384-...") attributes and ready-to-paste <script> / <link> tags from a file or pasted code. Nothing is downloaded.
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HTML Live Viewer
Write HTML, CSS and JavaScript and see a live sandboxed preview. Split-screen editor. Sandboxed iframe — no access to page data.
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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.
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Number Base Converter
Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36, even very large numbers.
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