Developer
JSON Formatter / Validator
Validate, format and compact JSON without uploading your input.
Open tool ↗THE TOOLBOX
Less repetitive work.
More room to build.
Practical tools that do one job well. No uploads, no account, no detours.
12 tools found
Developer
JSON ↔ YAML Converter
Convert JSON and YAML 1.2 locally, with duplicate-key and alias limits.
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CSV ↔ JSON Converter
Convert CSV tables and JSON arrays of flat objects. CSV output escapes spreadsheet formula prefixes.
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XML Formatter
Indent XML locally without enabling external entities or DTD declarations.
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Base64 Encoder / Decoder
Encode UTF-8 text to Base64, or decode Base64 back to UTF-8 text.
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URL Encoder / Decoder
Encode or decode a URL component using UTF-8 percent encoding.
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JWT Decoder
Inspect a compact JWT header and payload locally. Decoding does not verify the signature.
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UUID Generator
Create cryptographically random UUID v4 identifiers in your browser.
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Unix Timestamp Converter
Convert seconds or milliseconds to UTC, or an explicit ISO date-time to Unix time.
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Regex Tester
Inspect JavaScript regular-expression matches in a terminable browser worker.
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Text Diff Checker
Compare two texts with an explicit line-by-line added and removed result.
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SHA-256 Hash Generator
Hash UTF-8 text using browser Web Crypto and display its hexadecimal digest.
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