Free Developer tools tools

Formatters, encoders, hashes, IDs and other everyday developer utilities.

Password GeneratorCreate strong random passwords and passphrases in your browser.JSON FormatterValidate, beautify and minify JSON with exact error positions and a tree view.Data Format ConverterConvert JSON, YAML, TOML, XML, CSV, INI and .env, and generate types.Base64 Encoder & DecoderEncode text and files to Base64 or data URIs and decode them back.URL Encoder & DecoderPercent-encode or decode URLs and edit query parameters in a table.Hash GeneratorMD5, SHA-256, SHA-3, BLAKE3, CRC32 and more for text and files, with HMAC.UUID GeneratorGenerate UUID v4, v7 and v1, ULIDs and Nano IDs in bulk.Regex TesterTest JavaScript regular expressions with live highlighting and a plain-English explanation.SQL FormatterFormat or minify SQL for many dialects.JWT DecoderDecode JSON Web Tokens, check expiry, verify signatures and sign test tokens.Unix Timestamp ConverterConvert epoch time to dates in any time zone and back, plus a cron explainer.