37+ Developer Tools

Dev Tools

Developer Swiss Knife — Right in Your Pocket

The ultimate toolkit for developers. Format, encode, decode, convert, generate, and inspect data — all offline, no server needed. Perfect for debugging APIs, generating test data, and daily coding tasks.

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Dev Tools App

Why Dev Tools?

100% Offline

No internet connection required. All tools work completely offline, keeping your data private and secure on your device.

Lightning Fast

Built with Flutter for native performance. Process data instantly without waiting for server responses.

Material Design 3

Beautiful, modern interface with dynamic theming. Choose from 10 color presets and light/dark/system modes.

Quick Search

Find any tool instantly with the powerful search feature. Jump to the tool you need in seconds.

Adjustable Text Size

Customize content text size from 80% to 140% for comfortable reading on any device.

Developer-First

Built by developers, for developers. Every tool is designed with real-world coding workflows in mind.

37+ Tools in 6 Categories

Formatters

  • JSON Formatter — Pretty print or minify with syntax highlighting
  • XML Formatter — Beautify or minify XML documents
  • SQL Formatter — Format queries with keyword highlighting
  • JSON Path Extractor — Navigate and extract values interactively

Encoders & Decoders

  • Base64 Encoder/Decoder
  • URL Encoder/Decoder
  • HTML Entity Encoder/Decoder
  • JWT Decoder — Inspect JSON Web Tokens
  • String Escape/Unescape
  • GZip Compress/Decompress

Converters

  • Number Base Converter (Binary, Octal, Decimal, Hex)
  • Timestamp Converter
  • JSON ↔ YAML Converter
  • JSON to Dart Class Generator
  • Cron Expression Parser
  • URL Parser, Chmod Calculator, HTTP Status Codes

Generators

  • Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
  • UUID Generator (v1, v4, bulk)
  • Lorem Ipsum Generator
  • Password Generator with strength indicator
  • JWT Builder for testing
  • Random Data Generator (names, emails, phones, IPs)

Text Tools

  • Text Case Converter (camelCase, snake_case, UPPER, Title)
  • Regex Tester with live highlighting
  • Text Diff — Compare two texts side by side
  • Word/Char Counter with reading time
  • Find & Replace with regex support
  • Slug Generator, Markdown Preview

Graphic Tools

  • Color Converter (HEX, RGB, HSL)
  • Color Palette Generator — Complementary, analogous, triadic harmonies
  • Pixel/Unit Converter (px, pt, rem, em, dp, sp, cm, inches)

App Screenshots

Home Screen

Home — All Tools with Search

JSON Formatter

JSON Formatter with Syntax Highlighting

Password Generator

Password Generator with Strength Meter

Color Palette

Color Palette Generator

Dark Mode

Material 3 Dark Theme

Download Dev Tools

Whether you're debugging an API response, generating test data, formatting SQL queries, or converting timestamps — Dev Tools has you covered. Perfect for software developers, web developers, backend engineers, DevOps, mobile developers, and QA testers.

GET IT ON Google Play

What Developers Say

Finally a dev toolkit that works offline! I use it daily for debugging API responses and generating test UUIDs. The JSON formatter alone is worth the download.

Alex

Alex Chen

Backend Developer

The JSON to Dart class generator saves me so much time. And having all these tools in one app without needing internet is a game-changer for mobile development.

Sarah

Sarah Williams

Flutter Developer

From regex testing to cron expression parsing, this app has everything I need. The Material 3 design is beautiful and the multiple theme options are great.

Mike

Mike Johnson

DevOps Engineer

Contact Us

Have a tool suggestion or found a bug? We'd love to hear from you! We're always adding more utilities based on developer feedback.

Send Us a Message