Developer tools
9 tools in this category.
- JSON Formatter and ValidatorPretty-print, minify or sort JSON, and get syntax errors reported by line and column with the offending line shown. Runs entirely offline.
- Base64 Encoder and DecoderEncode and decode Base64 in your browser, including URL-safe Base64. Handles emoji, Sinhala and Chinese, which btoa-based tools cannot.
- UUID GeneratorGenerate UUID v4 or the time-ordered v7 in bulk, using your browser's cryptographic randomness. Also validates and inspects existing UUIDs.
- SHA Hash GeneratorGenerate SHA-256, SHA-384, SHA-512 or SHA-1 hashes of any text in your browser, using the Web Crypto API. Nothing is uploaded.
- URL Encoder and DecoderPercent-encode or decode URLs and query parameters, and break any URL into its parts. Handles the component and full-URL distinction correctly.
- Unix Timestamp ConverterConvert a Unix timestamp to a readable date and back, in seconds or milliseconds, with UTC and local time shown side by side.
- JWT DecoderDecode a JSON Web Token in your browser and read its header, payload and claims. Expiry is checked against your clock. Nothing is ever uploaded.
- Password GeneratorGenerate strong random passwords or passphrases in your browser, using the same cryptographic randomness your bank does. Nothing is transmitted.
- CSV to JSON ConverterConvert CSV to JSON and back in your browser, with correct handling of quoted fields, embedded commas and newlines inside cells. Nothing uploads.