Developer tools that just work.

Free developer tools that run entirely in your browser.

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JSON Tools

Format, validate, minify, diff, and convert JSON.

JSON FormatterBeautify and indent messy or minified JSON.JSON ValidatorCheck whether JSON is syntactically valid, with precise error locations.JSON MinifierStrip whitespace from JSON to reduce payload size.JSON CompareDiff two JSON documents and see what changed.JSON to YAML ConverterConvert between JSON and YAML formats.JSONPath TesterRun JSONPath queries against JSON and preview matches.

JWT Tools

Decode and generate JSON Web Tokens.

JWT DecoderDecode a JWT's header and payload.JWT GeneratorCreate and sign an HS256 JWT, or verify a token's signature.

Base64 Tools

Encode and decode text and files as Base64.

Base64 Encoder / DecoderEncode or decode Base64 for text and files.

UUID Tools

Generate unique identifiers.

UUID GeneratorGenerate v1, v4, or v5 UUIDs, individually or in bulk.

Regex Tools

Test and debug regular expressions.

Regex TesterTest regex patterns with live match highlighting and capture groups.

SQL Tools

Format and minify SQL queries.

SQL FormatterBeautify SQL queries with proper indentation.SQL MinifierCollapse whitespace in SQL queries to compress them.

Timestamp Tools

Convert between Unix timestamps and human-readable dates.

Timestamp ConverterConvert between Unix timestamps and human-readable dates.

Hash Tools

Generate cryptographic hashes.

Hash GeneratorGenerate MD5 and SHA family hashes from text.

Password Tools

Generate strong random passwords.

Password GeneratorGenerate strong random passwords with customizable rules.

QR Code Tools

Generate downloadable QR codes.

QR Code GeneratorGenerate a downloadable QR code from text or a URL.

Text Tools

Encode, escape, and transform text.

URL Encoder / DecoderPercent-encode or decode text for use in URLs.HTML Escape / UnescapeConvert text to/from safe HTML entities.Case ConverterConvert text between common naming case styles.