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Compare allApp info
- Installs
- 10+
- Category
- Tools
- Content rating
- Everyone
- Version
- 1.0.0
- Released
- Mar 13, 2026
- Last updated
- 13 Mar 2026
- In-app purchases
- No
- Contains ads
- Yes
- Promo video
- No
- Requires Android
- 7.0
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Dev tool box with 35+ offline tools.
The ultimate offline developer multitool: 35+ fast coding & debugging utilities
Supercharge Your Development Workflow! Say goodbye to bookmarking dozens of websites for simple formatting, encoding, or generating tasks. Dev ToolBox is the ultimate all-in-one utility app built for coders, testers, and designers. Whether you need to quickly format JSON, decode a JWT, test a Regex pattern, or generate a UUID, this app brings over 35 essential developer tools straight to your pocket. The best part? It works 100% offline, meaning your data stays secure on your device and you get lightning-fast results without needing an internet connection. 🛠️ Included Tools & Utilities: Formatters & Parsers JSON Formatter: Beautify or minify JSON strings instantly. SQL Formatter: Clean up complex SQL queries. XML Formatter: Format and validate XML data. YAML to JSON: Seamlessly convert YAML files into JSON format. Encoders & Decoders Base64 Encoder/Decoder: Safely encode or decode text and data. URL Encoder/Decoder: Prepare URLs for safe web transmission. HTML Entity Coder: Encode or decode HTML entities safely. JWT Decoder: Inspect JSON Web Tokens without pasting them online. Generators & Security SHA Hash Generator: Generate secure SHA-1, SHA-256, SHA-512 hashes. UUID Generator: Create unique version 4 UUIDs on the fly. QR Generator: Convert text, links, or data into scannable QR codes. Lorem Ipsum Generator: Generate placeholder text for your UI designs. Web & Design Tools Color Converter: Convert seamlessly between HEX, RGB, HSL, and more. CSS Unit Converter: Translate PX to REM, EM, VW, and VH effortlessly. Aspect Ratio Calculator: Calculate exact dimensions for images and video. Case Converter: Switch text between camelCase, snake_case, PascalCase, etc. Text & Code Utilities Regex Tester: Test and debug your regular expressions in real-time. Text Diff Checker: Compare two blocks of text or code to find changes. Markdown Preview: Write and preview Markdown files instantly. String Inspector: Count characters, words, bytes, and analyze text. System & Time Unix Timestamp: Convert epochs to human-readable dates and vice versa. Cron Expression: Parse and understand complex cron schedules. Base Converter: Convert numbers between binary, octal, decimal, and hex. Display Info: Check your device's screen resolution, density, and refresh rate. ...plus 10+ more tools designed to make your daily coding tasks easier! 🔒 Why Choose Dev ToolBox? 100% Offline & Private: No server calls. Your code and data never leave your device. Blazing Fast: Native performance means no waiting for web pages to load. Lightweight: Packed with features but takes up minimal space on your phone. No Distractions: A clean, developer-focused UI designed for getting things done. Simplify your workflow and carry your essential tools wherever you go. Download Dev ToolBox today!