Developer Tools
Free developer utilities that run entirely in your browser. No servers, no limits.
JSON Formatter & Validator
Format, validate, and minify JSON data instantly.
HTML / Markdown Preview
Write HTML or Markdown and see a live preview as you type.
Case Converter
Convert text between camelCase, snake_case, kebab-case, and more.
Password Generator
Generate strong random passwords with crypto-grade randomness.
UUID Generator
Generate UUID v4 identifiers for databases and APIs.
Base64 Encode / Decode
Encode text or files to Base64 and decode back.
URL Encode / Decode
Encode or decode URL-encoded strings instantly.
Text Diff Checker
Compare two texts and highlight differences line by line.
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words.
Regex Tester
Test regular expressions against input text with match highlighting.
Unit Converter
Convert length, weight, temperature, area, and volume units.
Color Converter
Convert between HEX, RGB, HSL, and HSV color formats.
Timestamp Converter
Convert Unix timestamps to human-readable dates and back.
Hash Generator
Generate SHA-256, SHA-384, and SHA-512 hashes for text or files.
QR Code Generator
Create QR codes with custom colors and error correction levels.
QR Code Scanner
Scan QR codes from image upload or camera.
Word Counter
Count words, characters, and reading time.
Free Online Developer Tools — 100% Private
All developer tools on AIAZHTools run locally in your browser. Your code, data, and configurations never leave your device. No servers, no storage, no tracking.
How to Format JSON?
Paste your JSON data into the input area, click Format, and get a beautifully indented, readable version. Perfect for debugging APIs and editing configuration files.
HTML & Markdown Preview
Write HTML or Markdown in one pane and see the rendered output instantly. Perfect for drafting email templates, testing snippets, or previewing documentation before publishing.
Password & UUID Generation
Generate cryptographically secure passwords and UUID v4 identifiers using the Web Crypto API. All randomness is sourced from your browser's secure random number generator.
Hash Generator & QR Code Tools
Generate SHA-256/384/512 hashes using the Web Crypto API for file integrity verification and password storage. Create QR codes with custom colors and error correction, or scan QR codes from images and camera — all locally in your browser.
Why Use Serverless Developer Tools?
Server-based tools log your code and data. Client-side tools process everything locally, ensuring your sensitive API responses, configuration files, and data structures remain completely private.