Online Developer Tools
Fast, private developer utilities that run entirely in your browser. Nothing you paste is uploaded to a server.
10 tools
Base64 Encoder / DecoderEncode text to Base64 or decode Base64 to text, with UTF-8 and URL-safe support.CWR ValidatorCheck CWR 2.1/2.2 work registration files: structure, record layouts, codes, ISWCs and ownership shares.DDEX Validator (ERN)Check DDEX ERN 3.8 and 4.x release XML for errors: identifiers, references, deals and missing metadata.Font Converter (TTF, OTF, WOFF, WOFF2)Convert TTF and OTF fonts to WOFF2 and WOFF for the web, or unpack web fonts back to TTF/OTF.Hash Generator (MD5, SHA-256)Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text instantly.JSON Formatter & ValidatorFormat, beautify, validate and minify JSON with clear error locations. Runs in your browser.JWT DecoderDecode JSON Web Tokens to inspect header, payload and expiry. Nothing leaves your browser.Unix Timestamp ConverterConvert Unix epoch timestamps to human dates in IST, UTC or local time — and back.URL Encoder / DecoderPercent-encode or decode URLs and query parameters, and break a URL into its parts.UUID GeneratorGenerate random v4 or time-ordered v7 UUIDs in bulk, cryptographically secure.