Developer tools

Encoders, generators, formatters and validators. Paste a secret in and it stays in your browser.

• JSON Formatter & ValidatorPretty-print, minify, and validate JSON with precise error locations.
• Base64 Encoder & DecoderEncode text or files to Base64 and decode it back, handling UTF-8 correctly in both directions.
• Hash Generator (SHA-256)Compute SHA-1, SHA-256, SHA-384 and SHA-512 digests of any text, computed locally.
• UUID Generator (v4 & v7)Generate random UUIDs in bulk, version 4 for randomness or version 7 for time ordering.
• Password & passphrase GeneratorGenerate strong random passwords and passphrases, with an entropy estimate.
• Unix Timestamp ConverterConvert Unix timestamps to human dates and back, in seconds, milliseconds, and other formats.
• JWT DecoderDecode a JSON Web Token to inspect its header and payload, entirely in your browser.
• URL Encoder & DecoderPercent-encode and decode URLs, query parameters, and reserved characters safely.
• Regular Expression TesterTest JavaScript regular expressions with live match highlighting and capture group breakdown.

Showing 9 of 76 tools. See everything.