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34 utilities for developers and engineers
Format JSON, generate hashes, test regex, decode JWTs, validate data — all in your browser.
Encode and decode URLs with percent-encoding
Open toolEncode and decode Base64 text and files
Open toolGenerate UUID v4 identifiers in bulk
Open toolGenerate SHA-256, SHA-384, SHA-512 hashes
Open toolGenerate placeholder text for design and development
Open toolFormat, beautify, and minify JSON data
Open toolConvert between HEX, RGB, HSL color formats
Open toolTest regular expressions with real-time highlighting
Open toolConvert between binary, octal, decimal, and hexadecimal
Open toolCalculate subnet details from CIDR notation
Open toolDecode and inspect JSON Web Tokens
Open toolCalculate MD5, SHA-1, CRC-32, Adler-32 checksums and verify file integrity
Open toolConvert text between UTF-8, UTF-16, ISO-8859-1, and other encodings
Open toolEncrypt and decrypt text or files with AES-256-GCM
Open toolParse cron expressions with human-readable descriptions and next run times
Open toolConvert between Unix timestamps and human-readable dates
Open toolFormat and beautify SQL queries with customizable options
Open toolResolve and inline CSS @import statements into a single file
Open toolGenerate color palettes, gradients, shadows, and glassmorphism CSS
Open toolDiff two JSON documents with visual highlighting of changes
Open toolGenerate TypeScript interfaces and types from JSON data
Open toolGenerate Code 128, Code 39, EAN-13, EAN-8, and UPC-A barcodes
Open toolCreate beautiful code screenshots with syntax highlighting and themes
Open toolGenerate JSON Schema from sample JSON data
Open toolBeautify or minify HTML code
Open toolBeautify or minify CSS code
Open toolBeautify or minify JavaScript code
Open toolConvert between TOML and JSON formats
Open toolCreate ZIP archives from multiple files
Open toolExtract and download files from ZIP archives
Open toolIdentify file format from content magic bytes
Open toolValidate and format JSON data
Open toolValidate XML documents against schemas
Open toolValidate CSV files for correctness and consistency
Open toolThe hash generator creates one-way hashes using WebCrypto API. For password hashing in production, use bcrypt or Argon2 instead of SHA/MD5.
Yes, it processes JSON in-browser. Performance depends on your device, but most files up to 10MB work well.
Yes, they use the browser's crypto.getRandomValues() for cryptographically secure random generation.