All tools
20 tools, all client-side. Search by name or by what you're trying to do.
- JSON FormatterFormat, validate and minify JSON.
- UUID GeneratorGenerate v4 and v7 UUIDs in bulk.
- Base64 Encoder / DecoderEncode and decode Base64, including URL-safe.
- Hash GeneratorSHA-1, SHA-256, SHA-384 and SHA-512 digests.
- JWT DecoderInspect JWT headers, claims and expiry.
- URL Encoder / DecoderPercent-encode URLs and parse query strings.
- Timestamp ConverterUnix time to dates, and back.
- App Icon GeneratorOne image to every iOS, Android and web size.
- Color ConverterHEX, RGB, HSL and OKLCH in sync.
- Text DiffCompare two blocks of text line by line.
- YAML FormatterValidate, pretty-print and inspect YAML.
- SQL FormatterBeautify SQL across 12 dialects.
- Markdown PreviewerRender GitHub-flavored Markdown live.
- Regex TesterTest regex with live matches and groups.
- Lorem Ipsum GeneratorPlaceholder text in words, sentences or paragraphs.
- Password GeneratorStrong, random passwords from crypto.getRandomValues.
- QR Code GeneratorText or URLs to a downloadable QR PNG.
- Cron ExplainerTranslate a cron expression to plain English.
- Number Base ConverterBinary, octal, decimal, hex and any radix.
- JSON → TypeScriptInfer TypeScript interfaces from JSON.
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