Dev Tools Kit

Dev Tools Kit is a handy toolbox for developers.

Stop jumping between websites to format JSON, decode Base64 or test a regex.

FREE TOOLS

• JSON Formatter – Pretty-print or minify JSON. • Base64 – Encode and decode strings. • UUID Generator – Generate random UUID v4. • String Case – Convert text to camelCase, snake_case, kebab-case, Title Case, and more. • Number Base – Convert between binary, octal, decimal and hex. • HTML Encoder – Encode and decode HTML entities. • Password Generator – Generate secure random passwords. • Chmod Calculator – Build Unix permission strings with a visual editor. • QR Code Generator – Turn any text or URL into a QR code. • Text Statistics – Count characters, words, sentences, reading time, and more. • URL Parser – Break a URL down into scheme, host, port, path, query and fragment.

PRO TOOLS (one-time purchase)

• Regex Tester – Test and debug regular expressions on sample text. • URL Encoder – Encode / decode URLs. • Timestamp – Convert timestamps to readable dates and back, in any timezone. • Hash Generator – Compute MD5, SHA-1 and SHA-256. • JWT Decoder – Inspect JSON Web Tokens in a readable format. • Text Diff – Compare two texts line by line, or word by word. • Color Converter – Convert colors between HEX, RGB, HSL and Swift Color(…). • Lorem Ipsum – Generate placeholder text by words, sentences or paragraphs. • CRON Parser / Builder – Read and compose CRON expressions with a visual editor. • CSV ↔ JSON – Convert between CSV and JSON formats. • YAML ↔ JSON – Convert between YAML and JSON, direction auto-detected. • JWT Builder – Build and sign JWT tokens (HS256/HS384/HS512). • Token Counter – Estimate token counts for today's leading AI models (GPT, Claude, Gemini, Llama, Mistral, xAI, DeepSeek). • SQL Formatter – Format and indent SQL queries, with syntax-highlighted output. • HTTP Client – Send GET/POST/PUT/PATCH/DELETE requests with an auth assistant and a built-in status code reference.

DESIGNED FOR DEVELOPERS

• Search, pin favorites, and reorder tools to fit your workflow. • Share text from any app directly into a tool via the Share Extension. • Clean, fast interface — inputs are remembered between sessions. • Input history (Pro) – Reuse your last 10 values, pasted or typed, in every tool. • 100% offline — nothing is sent to any server. • One-time purchase, no subscriptions. • Future Pro tools included in the price.

Dev Tools Kit is the small utility app you open dozens of times a week while coding, debugging or reviewing data.