Advanced JavaScript Minifier & Beautifier
Optimize, validate, and beautify your JavaScript code
Original Code
0 bytes
Processed Code
0 bytes
Validation Results
How to Use the JavaScript Minifier & Beautifier Tool
This comprehensive guide will walk you through every feature of the tool and how to use it effectively.
Getting Started
Basic Usage
1. Open the tool in your web browser
2. Select your desired mode:
- Minify: For code compression
- Beautify: For code formatting
- Validate: For error checking
Mode Selection
- Click one of the three mode buttons at the top:
```
[Minify] [Beautify] [Validate]
```
Minification Mode
Steps for Minifying Code
1. Paste your JavaScript code into the left "Original Code" panel
2. Configure minification options:
- ✓ Remove comments (removes all comments from code)
- ✓ Remove whitespace (removes unnecessary spaces)
- ✓ Shorten variables (reduces variable name length)
- ✓ Mangle properties (shortens object property names)
3. Click "Process Code"
4. Your minified code will appear in the right panel
Example:
Original Code:
```javascript
function calculateTotal(price, quantity) {
// Calculate the total price
var total = price * quantity;
return total;
}
```
Minified Result:
```javascript
function c(p,q){var t=p*q;return t}
```
Beautification Mode
Steps for Beautifying Code
1. Paste your code into the left panel
2. Set beautification options:
- Indent Size (2, 4, or 8 spaces)
- Use tabs (instead of spaces)
- Keep comments (preserve existing comments)
- Use single quotes (convert string quotes)
3. Click "Process Code"
4. Formatted code appears in the right panel
Example:
Minified Input:
```javascript
function c(p,q){var t=p*q;return t}
```
Beautified Result:
```javascript
function calculateTotal(price, quantity) {
var total = price * quantity;
return total;
}
```
Validation Mode
Steps for Validating Code
1. Paste your code into the left panel
2. Click "Validate Code"
3. Check the validation panel below for:
- Syntax errors
- Line numbers
- Error descriptions
Error Examples:
```
✗ Line 5: Unexpected token '}'
✗ Line 12: Missing semicolon
```
Additional Features
Auto-Format Button
- Instantly formats code with default settings
- Useful for quick formatting without changing modes
Copy Result Button
- Copies processed code to clipboard
- Shows confirmation toast when copied
Clear All Button
- Clears both input and output panels
- Resets all options to defaults
Statistics
- Shows file size in bytes for both panels
- Updates in real-time as you type
Tips & Best Practices
1. Before Minifying
- Always validate your code first
- Keep a backup of the original code
- Test minified code before deployment
2. While Beautifying
- Choose consistent indentation settings
- Decide on quote style conventions
- Consider keeping important comments
3. For Validation
- Fix errors one at a time
- Re-validate after each fix
- Pay attention to line numbers
Keyboard Shortcuts
- `Ctrl + Enter`: Process Code
- `Ctrl + C`: Copy Result (when result panel is focused)
- `Ctrl + L`: Clear All
- `Alt + F`: Auto-Format
Common Issues & Solutions
Code Doesn't Minify
- Check for syntax errors first
- Ensure all brackets are properly closed
- Validate code before minifying
Beautification Issues
- Make sure code is valid JavaScript
- Check indentation settings
- Verify bracket matching
Validation Errors
- Look for missing semicolons
- Check for unmatched brackets
- Verify variable declarations
File Size Optimization
To get the best minification results:
1. Enable all minification options
2. Remove unused code
3. Combine multiple files
4. Use shorter variable names
5. Remove console.log statements
Advanced Usage
Custom Formatting
1. Set specific indentation
2. Choose quote style
3. Configure comment preservation
4. Set bracket style
Batch Processing
1. Copy multiple functions
2. Paste into input
3. Process all at once
4. Copy combined result
Support
If you encounter issues:
1. Clear the tool completely
2. Paste code in smaller chunks
3. Validate before processing
4. Check for syntax errors
5. Try different browser if issues persist
This tool is designed to be intuitive and powerful. Start with basic features and gradually explore advanced options as you become more comfortable with the interface.
Remember: Always keep a backup of your original code before making significant changes!