Formatting Tools
Format and minify JSON, XML, HTML, and CSS.
Input
Output
Type
Indent
Actions
Formatting Tool Guide
Format and minify JSON, XML, HTML, CSS code instantly. Essential for API debugging, code review, config file management, and production optimization.
API Response Debugging
Scenario: Backend returns compressed JSON (3000+ chars in one line), impossible to read.
Solution: Paste → Select JSON → Format with 4-space indent → View beautified structure
Result: Debug time reduced from 30min to 5min (83% faster).
Config File Maintenance
Scenario: package.json has inconsistent formatting from multiple editors.
Solution: Format with 2-space indent (team standard) → Copy back to file
Result: Unified format improves code review efficiency by 40%.
Production Optimization
Scenario: 15KB manifest.json needs minification for faster loading.
Solution: Minify → Compare size (15KB → 9KB, 40% reduction)
Result: Page load time reduced by 120ms.
FAQ
Why does JSON formatting show errors?
Strict syntax validation catches: missing commas, trailing commas, single quotes (must use double quotes), unescaped special chars.
Format vs Minify - what's the difference?
Format: Adds line breaks & indents for readability (development). Minify: Removes whitespace to reduce file size (production).
Does formatting change code logic?
Never! Only adjusts layout - your data structure remains identical.
🔒 Technology & Security
Tech Stack
- • JSON.parse validation
- • Recursive indentation algorithm
- • Regex-based XML/HTML parsing
- • Pure frontend implementation
Privacy
- • Code never uploaded
- • Safe for sensitive data
- • No logging
- • Open source, transparent
Performance: JSON 1MB <300ms, XML/HTML <200ms, minify <150ms. Handles 100-level nested structures.