Office & Data

CSV, JSON and Markdown conversion - 25 working tools

CSV to JSONConvert CSV with a header row into a JSON array.
JSON to CSVConvert a JSON array of objects into CSV.
Markdown to HTMLConvert Markdown to clean, escaped HTML with a preview.
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.
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.
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.
XLSX to CSVConvert an Excel workbook (XLSX, XLS, ODS) to CSV: one sheet, or every sheet as a ZIP.
CSV to XLSXTurn a CSV or TSV file (or pasted text) into a real Excel .xlsx workbook.
Excel Sheets MergerCombine several sheets of one workbook into a single sheet, matching columns by header or by position.
Excel File MergerMerge several Excel or CSV files into one workbook: stack the rows into one sheet, or keep each sheet separate.
Excel Duplicate RemoverFind and remove duplicate rows in an Excel or CSV sheet, comparing all columns or only the ones you pick.
CSV CleanerTidy a CSV: trim spaces, drop empty rows/columns, fix ragged rows, remove invisible characters and duplicates.
CSV SplitterSplit a large CSV into smaller files by row count, number of parts or column value. Download all parts as a ZIP.
CSV Column MapperRename, reorder, drop and fill columns to turn one CSV/Excel layout into another. Save the mapping as JSON to reuse it.
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.
Spreadsheet Diff CheckerCompare two Excel/CSV sheets and list added, removed and changed rows and cells, matched by key column or row position.
Data Type DetectorProfile each column of a spreadsheet or CSV: detect integers, decimals, dates, booleans, emails, URLs and more, with null counts and ranges.
Data ValidatorCheck a spreadsheet or CSV against rules per column (type, required, unique, range, pattern, allowed list) and export the problems.
JSON to ExcelConvert JSON (array of objects, array of arrays, or an object of arrays) into an Excel .xlsx workbook.
Excel to JSONConvert an Excel sheet (or all sheets) to JSON: an array of objects using the header row, or an array of arrays.
XML to JSONConvert XML to JSON: attributes become @keys, repeated elements become arrays, with options for text and types.
YAML to JSONConvert YAML (including multi-document files) to formatted JSON.
JSON to YAMLConvert JSON to clean, readable YAML.
Markdown to PDFTurn Markdown into a simple text PDF: headings, lists, tables, code, quotes and links. Latin characters only, no images.
Word Document MergerMerge several .docx files into one, in your order, keeping text, formatting, lists, tables and images (OOXML-level merge).