Small tools for exact work.

Format, inspect, convert, and verify common developer data without sending it anywhere.

Ctrl K

ToolCategory15 total

Text Column ExtractorExtract and reorder columns from delimited text locally.Data SQL FormatterFormat SQL queries across common database dialects locally.Data Cron Expression ParserParse, build, and preview Unix cron schedules locally.Developer YAML ↔ JSON ConverterConvert, format, and validate YAML and JSON locally.Data Color ConverterConvert color formats, check contrast, and pick colors from images.Developer API ClientTest HTTP requests in Browser or protected Proxy mode.Developer JSON FormatterFormat, minify, and validate JSON with clear errors.Data JWT DecoderInspect JWT headers, claims, and expiration times locally.Security TOTP GeneratorGenerate 2FA authenticator codes from Base32 secrets locally.Security Base64 Encoder & DecoderEncode UTF-8 text or files and decode Base64 safely.Encoding Unix Timestamp ConverterConvert Unix seconds or milliseconds to readable dates.Data UUID v4 GeneratorGenerate one or many cryptographically random UUIDs.Developer URL Encoder & DecoderEncode or decode URL components without leaving the page.Encoding Hash GeneratorCreate SHA-256, SHA-384, or SHA-512 hashes locally.Security Regular Expression TesterTest JavaScript regex patterns, flags, matches, and groups.Developer