🛠️ Developer Tools
Browser-based utilities for working with data formats, encodings, and developer workflows. No installation, no sign-up — open and use.
JSON FormatterFormat, validate & explore JSON with a collapsible tree view
Regex TesterLive match highlighting, capture groups, 22-item cheat sheet
Base64 Encode / DecodeUnicode-safe, URL-safe mode, file drag-and-drop
UUID GeneratorTrue v1 (BigInt timestamp) and v4 (crypto random)
Timestamp ConverterConvert Unix timestamps, auto-detect ms vs seconds
URL Encoder / DecoderEncode/decode URLs with query parameter breakdown
Password GeneratorCryptographically secure, entropy display, bulk generation
Code BeautifierFormat & beautify HTML, CSS & JavaScript instantly
YAML ↔ JSON ConverterConvert between YAML and JSON in both directions
XML FormatterBeautify, minify & validate XML with syntax highlighting
SQL FormatterFormat SQL queries with keyword highlighting & casing control
Favicon GeneratorCreate favicon.ico & PNG icons from text, emoji or image
Image to Base64Convert images to data URIs for HTML, CSS & JavaScript
Hash GeneratorMD5, SHA-1, SHA-256 & SHA-512 from text or files
JWT DecoderDecode header, payload and claims from JWT tokens
HTML Entity EncoderEncode and decode HTML entities with full reference table
Number Base ConverterBinary ↔ Octal ↔ Decimal ↔ Hex, any base 2–36
Cron Expression BuilderBuild, validate and explain cron schedules visually
Escape / UnescapeEscape HTML, URL, JavaScript, SQL and Base64
Data Format ConverterConvert between JSON, YAML and XML in any direction
Data Table VisualiserVisualise JSON or CSV data as a sortable table
Password Breach CheckerCheck if your password appeared in a data breach
Password Strength CheckerEntropy score, crack time and improvement tips
HTTP Status CodesComplete reference for all 1xx–5xx HTTP status codes
Meta Tag GeneratorGenerate SEO, Open Graph and Twitter Card meta tags
Fake Data GeneratorGenerate random test data — JSON, CSV or SQL
Roman Numeral ConverterConvert Arabic numbers to Roman numerals and back
Morse Code TranslatorConvert text to Morse code with audio playback
Text to Binary / HexEncode & decode text as binary, hex, octal or decimal
ASCII Art GeneratorConvert text to big ASCII art banners — 7 font styles
Image Colour ExtractorExtract dominant colour palette from any image
SVG Viewer & OptimizerPreview SVG files and strip unnecessary metadata
About these tools
All developer tools on PocketTools run entirely in your browser using native JavaScript APIs. Your data never leaves your machine — the JSON you paste, the regex you test, the password you generate. This makes the tools not just private, but fast: no network latency, no rate limits, no server downtime.