Documents & Data
Convert and clean up structured data and documents — spreadsheets, config files, Word docs and Markdown — instantly and privately.
20 tools, all running in your browser.
Fig 1 Every row read, every value filed
Move across to carry a card · ← →
Each card is a row; the brush reads the selected column and the card drops in that pocket. Converting CSV, JSON or a spreadsheet is the same job, done by your browser.
Most used
CSV to JSON Turn CSV or TSV into clean JSON with auto-detected delimiters, type inference, nested keys and pretty printing. Free, private, no upload. Excel to CSV Turn XLSX, XLS, XLSM and ODS sheets into CSV with a sheet picker, delimiter choice, date formatting and a ZIP of every sheet at once. Markdown Editor Write Markdown with a synced live preview, GFM tables and task lists, word count, optional local autosave and export to .md or .html. Markdown Table Generator Build a GFM table in a spreadsheet-style grid, or paste from Excel, Sheets, CSV or HTML. Set per-column alignment and export Markdown, CSV, HTML or JSON. Markdown to HTML Render Markdown to sanitised HTML with a live preview, GitHub tables and task lists, heading anchors and an optional full styled document.
Everything else
CSV to Excel Build a real .xlsx workbook from CSV or TSV with auto-fitted columns, a named sheet, an autofilter and proper number and boolean cell types. CSV to Markdown Table Paste comma, tab, semicolon or pipe separated values and get an aligned GFM table. Quoted fields containing commas are parsed correctly. DOCX to Markdown Convert Word documents to Markdown keeping headings, lists, links, bold, italic and tables, with configurable heading and bullet styles. DOCX to text Extract clean plain text from Word .docx files with paragraph breaks intact, smart-quote straightening and batch ZIP export. Nothing is uploaded. Excel to JSON Convert XLSX and ODS worksheets into typed JSON — real numbers, booleans and ISO dates, header row options and one-click all-sheet export. HTML Table to Markdown Paste an HTML <table> and get clean GFM Markdown, with align attributes carried into the separator row and nested markup reduced to text. HTML to Markdown Convert HTML into clean Markdown with control over heading style, bullet markers, code fences, link style and GitHub-flavoured tables. HTML to Word Paste HTML or drop an .html file and get a clean Word document with real styles, working lists and converted tables — processed locally. JSON to CSV Flatten nested JSON into a spreadsheet-ready CSV or TSV with dotted column names, custom column order and full quote control. Runs offline. JSON to YAML Convert JSON to readable YAML with correct quoting, block literals for multi-line text, optional key sorting and 2 or 4 space indentation. JSON viewer Explore JSON in a collapsible tree with path breadcrumbs, search, key sorting and size stats, plus one-click beautify, minify and validate. Markdown Table to CSV Turn a GFM pipe table back into CSV for Excel, Numbers or a script — escaped pipes restored, alignment markers stripped, delimiter of your choice. Markdown to Word Turn Markdown — including AI output — into a real .docx using Word’s own heading, list and table styles. Built in your browser, no upload. Text to Word Turn a .txt file or pasted text into a properly formatted Word document, with paragraph breaks, bullets and ALL-CAPS headings recognised. YAML to JSON Parse YAML into JSON in your browser — comments, anchored indentation, block scalars and multi-document streams, with exact line and column errors.