Format JSON, encode Base64 and other everyday developer utilities that run locally in your browser.
Beautify, minify and validate JSON instantly with syntax highlighting and precise error locations.
Turn JSON into spreadsheets and spreadsheets into JSON — nested objects flattened, Excel-ready output.
Convert text and files to Base64 and back. UTF-8 safe, URL-safe variant and data URL output included.
Turn an image into a Base64 data URI for HTML or CSS — or decode Base64 back into an image.
Convert any color between HEX, RGB, HSL, HSV and CMYK — with shades, palettes and contrast check.
Convert between binary, decimal, hex, octal and any base up to 36 — even huge numbers.
Beautify messy code or minify it for production — nine languages, all in your browser.
Convert between YAML and JSON — instant and lossless.
Convert between XML and JSON — instant and lossless.
Write Markdown, see the preview live and copy clean HTML.
Build and debug regular expressions with live highlighting, groups and replace preview.
Turn Excel sheets into CSV, or CSV files into an Excel workbook — accents preserved.
Percent-encode text for safe URLs or decode %-sequences back to readable text, with a query-string breakdown.
Compute MD5 and SHA checksums for text or any file — and check a download against its published hash.
Create random v4 or sortable v7 UUIDs in bulk — cryptographically secure and generated in your browser.
Paste a JSON Web Token to read its claims, check if it has expired and verify HMAC signatures — privately.
Turn epoch timestamps into readable dates and back — with automatic unit detection and a live clock.