DevUtils vs Dev Tools Kit

DevUtils is an offline-first developer toolkit with 37+ essential tools — all running privately on your device. No data leaves your phone. PAYLOADS & DATA • JSON Formatter & Validator — Pretty-print, minify, or validate JSON with syntax highlighting • YAML ↔ JSON Converter — Seamless conversion between YAML and JSON • XML Formatter — Indent and beautify XML documents • CSV ↔ JSON Converter — Transform between CSV and JSON formats • SQL Formatter — Format and beautify SQL queries • HTML Entity Encoder/Decoder — Encode and decode HTML entities • Backslash Escape/Unescape — Handle string escaping • Text Diff Checker — Compare two texts and highlight differences ENCODING & DECODING • Base64 Text Encoder/Decoder — Encode or decode Base64 strings • Base64 Image Encoder/Decoder — Convert images to/from Base64 • URL Encoder/Decoder — Percent-encode or decode URLs • HTML Preview — Render HTML snippets live on device • Markdown Preview — Render Markdown with live preview • QR Code Generator — Create QR codes instantly • QR Code Reader — Scan and decode QR codes SECURITY & IDENTITY • JWT Debugger — Decode, inspect, and verify JSON Web Tokens • Hash Generator — MD5, SHA-1, SHA-256, SHA-512 and more • HMAC Generator — Keyed hash authentication codes • UUID/ULID Generator — Generate unique identifiers on demand • Password Generator — Create strong, customizable passwords • RSA Key Generator — Generate RSA key pairs • Certificate Decoder — Inspect X.509 certificates AUTOMATION & REGEX • RegExp Tester — Build and test regular expressions with live matching • Cron Expression Parser — Decode and schedule cron jobs • Chmod Calculator — Unix file permission calculator • Lorem Ipsum Generator — Generate placeholder text TIME & NUMBERS • Unix Time Converter — Convert between Unix timestamps and dates • Date Converter — Parse and format dates in multiple formats • Number Base Converter — Convert between binary, octal, decimal, hex • Color Converter — Convert between HEX, RGB, HSL, and more • Byte Converter — Convert between data size units • Pixel Converter — Convert between px, pt, em, rem ADDITIONAL TOOLS • Text Inspector & Case Converter — Word count, case transforms • List Converter — Sort, deduplicate, transform lists • JSON to Code — Generate model code from JSON • Phone Number Parser — Parse and validate phone numbers • URL Parser — Break down URLs into components All tools work 100% offline. Your data never leaves your device.

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.