Dev Tools Kit

JSON, Base64, hash, JWT & more

Free · In-App Purchases

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.

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New tools (Pro) : - HTTP Client — send GET/POST/PUT/PATCH/DELETE requests with custom headers and a JSON body. Includes an authentication assistant (Bearer/Basic), a history of sent requests, and a full searchable HTTP status code reference right in the tool - JWT Builder — build and sign JWT tokens (HS256/HS384/HS512), the natural companion to JWT Decoder - SQL Formatter — automatic indentation and formatting for SQL queries (SELECT, JOIN, WHERE, GROUP BY…), now with syntax-highlighted output - Token Counter — estimate token counts for today's leading AI models (GPT, Claude, Gemini, Llama, Mistral, xAI, DeepSeek) - YAML ↔ JSON — bidirectional conversion with automatic direction detection - URL Parser (free) — break a URL down into scheme, host, port, path, query params and fragment New feature (Pro) : Input history — every tool now remembers your last 10 values, whether pasted or typed by hand. A dedicated button lets you view, reuse, or delete any entry without ever leaving the tool Improvements : - CRON Parser and CRON Builder merged into a single two-tab tool - Password Generator: new "Secret Token" mode (hex or base64, 16/32/64 bytes) for generating technical secrets - QR Code Generator: Wi-Fi, Contact, Email, SMS and Phone presets in addition to plain URL - Regex Tester: capture groups are now shown for every match - Color Converter: copy each value independently (HEX/RGB/HSL/Swift) and enter precise RGB values via keyboard - JSON Formatter: syntax-highlighted output (keys, strings, numbers, booleans, punctuation) - Refreshed, borderless rounded-card style across every input and result field - Numerous UX polish items: clearer copy confirmation, unified Cmd+Return shortcut, last input remembered on more tools Fixes : - "Restore Purchases" now shows a clear success or error message - JWT Builder now shows a validation error instead of silently signing with an invalid key when the secret is empty - CSV ↔ JSON now accepts a single JSON object (not just an array of objects), converting it into a one-row table - Various stability and visual consistency fixes across tools

The developer, Kevin Cabon, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data

Privacy practices may vary based, for example, on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Size
2.9 MB
Category
Developer Tools
Compatibility
Requires iOS 17.6 or later.
  • iPhone
    Requires iOS 17.6 or later.
  • iPad
    Requires iPadOS 17.6 or later.
  • Mac
    Requires macOS 14.6 or later.
  • Apple Vision
    Requires visionOS 1.3 or later.
Languages
English and French
Age Rating
16+
  • 16+
  • Contains
    Unrestricted Web Access
    User-Generated Content
In-App Purchases
Yes
Provider
Kevin Cabon
  • Kevin Cabon has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
Copyright
© Cabon Kevin