Small tools for exact work.
Format, inspect, convert, and verify common developer data without sending it anywhere.
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ToolCategory9 total
JSON FormatterFormat, minify, and validate JSON with clear errors.DataJWT DecoderInspect JWT headers, claims, and expiration times locally.SecurityTOTP GeneratorGenerate 2FA authenticator codes from Base32 secrets locally.SecurityBase64 Encoder & DecoderEncode UTF-8 text or files and decode Base64 safely.EncodingUnix Timestamp ConverterConvert Unix seconds or milliseconds to readable dates.DataUUID v4 GeneratorGenerate one or many cryptographically random UUIDs.DeveloperURL Encoder & DecoderEncode or decode URL components without leaving the page.EncodingHash GeneratorCreate SHA-256, SHA-384, or SHA-512 hashes locally.SecurityRegular Expression TesterTest JavaScript regex patterns, flags, matches, and groups.Developer