Developer Tools
developer
ASCII converter, Base64 encoder/decoder, code formatter, color picker, CSS sprites, number system converter, QR code generator and reader. All processing runs in your browser. No signup required.
ASCII Code Converter
Convert text to ASCII codes (decimal, hex, binary) and view the ASCII table reference.
Open ASCII Code Converter →Base64 Encoder & Decoder
Encode and decode text or files to Base64 format with URL-safe option.
Open Base64 Encoder & Decoder →Code Formatter
Format and beautify HTML, CSS, JavaScript, and JSON code with proper indentation.
Open Code Formatter →Color Picker
Select colors and get HEX, RGB, HSL values. Pick colors from screen with eyedropper.
Open Color Picker →CSS Sprites Generator
Combine multiple images into a single sprite sheet and generate CSS code.
Open CSS Sprites Generator →Number System Converter
Convert between binary, octal, decimal, hexadecimal, and ASCII characters.
Open Number System Converter →QR Code Generator
Create QR codes for URLs, text, email, phone, Wi-Fi, vCard, and more.
Open QR Code Generator →QR Code Reader
Scan QR codes from camera or uploaded images.
Open QR Code Reader →1. How to Use
- Choose a tool from the grid above: ASCII Code Converter, Base64 Encoder/Decoder, Code Formatter, Color Picker, CSS Sprites Generator, Number System Converter, QR Code Generator, or QR Code Reader.
- ASCII Code Converter: Convert text to ASCII codes (decimal, hex, binary) and view the ASCII table reference.
- Base64 Encoder/Decoder: Encode and decode text or files to Base64 format with URL-safe option.
- Code Formatter: Format and beautify HTML, CSS, JavaScript, and JSON code with proper indentation.
- Color Picker: Select colors and get HEX, RGB, HSL values. Pick colors from screen with eyedropper.
- CSS Sprites Generator: Combine multiple images into a single sprite sheet and generate CSS code.
- Number System Converter: Convert between binary, octal, decimal, hexadecimal, and ASCII characters.
- QR Code Generator: Create QR codes for URLs, text, email, phone, Wi-Fi, vCard, and more.
- QR Code Reader: Scan QR codes from camera or uploaded images.
2. How It Works
All developer tools run entirely in your browser. No data is sent to any server—your data stays on your device.
ASCII and number system converters use standard JavaScript APIs for character and number conversion.
Base64 encoding uses the browser's built-in btoa/atob for text and FileReader for files.
Code Formatter uses Prettier for consistent code formatting across supported languages.
Color Picker uses the EyeDropper API when available for screen color picking.
CSS Sprites Generator uses Canvas API to combine images and generate positioning CSS.
QR Code tools use qrcode and jsQR libraries for generation and scanning.
3. About Developer Tools
Free online developer tools for encoding, formatting, color selection, and QR code handling. All processing runs locally in your browser—your data never leaves your device.
Designed for developers, designers, and anyone working with code, colors, or QR codes. No signup, no installation required.
Works on desktop and mobile. Uses modern web APIs for clipboard, file handling, and camera access.
4. Advantages
- Privacy: All data stays in your browser. No server storage, no tracking.
- No signup: Use immediately without creating an account.
- Cross-device: Responsive design works on phones, tablets, and desktops.
- Multiple formats: Support for various encoding, color, and number system formats.
5. Real-World Use Cases
- Debugging: Convert between text and ASCII/number formats for debugging character encoding.
- API development: Base64 encode/decode for data transmission and storage.
- Code quality: Format code for consistent style and readability.
- Design: Pick and convert colors for web and graphic design.
- Performance: Generate CSS sprites to reduce HTTP requests.
- Marketing: Create QR codes for URLs, contact info, and Wi-Fi sharing.
- Scanning: Read QR codes from camera or images.