Developer Tools
Format, validate, encode and decode data without pasting it into a server. 10 free tools, no account needed.
Base64 Encode & Decode
Convert text to Base64 and back, with full Unicode support and an option for the URL-safe alphabet used in JWTs and web addresses.
CSV to JSON Converter
Paste CSV or spreadsheet data and get a JSON array of objects or arrays, with smart handling of quotes, numbers and empty cells.
Hash Generator
Hash text or a file with five common algorithms at once and check a download against a published checksum.
JSON Formatter & Validator
Paste messy JSON to beautify it, check it for errors, or minify it for production. Your data never leaves your browser.
JSON to CSV Converter
Paste a JSON array of objects and get a clean CSV file with one column per field, ready for any spreadsheet.
JWT Decoder
Paste a JWT to see its header and payload as formatted JSON, check when it expires and verify HS256, HS384 or HS512 signatures.
Number Base Converter
Type a number in binary, octal, decimal, hex or a custom base and see it in all the others at once, with exact results for numbers of any size.
Regex Tester
Write a regular expression, paste some text and instantly see every match, its capture groups and the result of a find-and-replace.
Unix Timestamp Converter
Turn an epoch timestamp into a human-readable date in UTC and your time zone, or convert any date and time into a Unix timestamp.
URL Encode & Decode
Encode text so it is safe to put in a URL, or decode percent-encoded links back into readable text.