String Formatter
Transform text case, clean formatting, and apply common string operations
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100% Free - Developer Favorite
Format Strings Instantly
Convert text between different case styles - camelCase, snake_case, kebab-case, PascalCase and more. Clean up whitespace and formatting. All processing happens locally.
Developer Favorite
Instant Preview
Undo/Redo
No Sign-up
FEATURES
Everything Developers Need
A comprehensive string formatter for developers, writers, and anyone working with text.
Case Conversion
Convert between uppercase, lowercase, titleCase, camelCase, snake_case, kebab-case, PascalCase, and CONSTANT_CASE.
Text Cleaning
Trim whitespace, remove extra spaces, remove line breaks, and normalize unicode characters.
Live Preview
See your formatted text instantly as you type with smart debouncing for performance.
Format History
Track your recent transformations with full undo/redo support. Never lose your work.
Keyboard Shortcuts
Power users can use keyboard shortcuts for common actions. Ctrl+Z to undo, Ctrl+Y to redo.
File Upload
Drag & drop or upload text files up to 5MB. Supports TXT, MD, and JSON files.
100% Private
All text processing happens in your browser. Your text never leaves your device.
Works Offline
Install as a PWA and format text anywhere, even without internet connection.
One-Click Copy
Copy formatted output to clipboard with a single click. Visual feedback confirms success.
HOW IT WORKS
Format Text in 3 Easy Steps
No setup, no sign-up. Paste, choose format, and copy.
01
Enter Your Text
Paste your text, type directly, or drag & drop a file.
02
Choose Format
Select case conversion or text cleaning options from the sidebar.
03
Copy & Use
Copy the formatted output with one click. Undo if needed.
Text formatted instantly
Use Cases
How developers and writers use the string formatter
Developers
Convert variable names between camelCase, snake_case, and kebab-case.
API Integration
Transform JSON keys to match different API conventions.
Technical Writers
Maintain consistent case formatting across documentation.
Database Work
Format column names and constants consistently.
Data Cleaning
Remove extra whitespace and normalize text data.
Content Creators
Format titles, headings, and captions consistently.
Text Tool
Format Your Text
Transform text case, clean formatting, and apply common string operations
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String Formatter
v0.1.49String Formatter
Transform text case, clean formatting, and apply common string operations
- Convert text to UPPERCASE, lowercase, Title Case, and more
- Remove extra whitespace and format text
- Encode/decode URLs and HTML entities
- Works offline - no data sent to servers
Frequently Asked Questions
Everything you need to know about formatting strings
We support 9 case formats: uppercase, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case, PascalCase, and CONSTANT_CASE. Each is optimized for common programming and writing conventions.
You can trim leading/trailing whitespace, remove extra spaces (multiple spaces to single), remove line breaks, and normalize unicode characters (convert special characters to their standard forms).
As you type or paste text, the output updates automatically with a 100ms debounce to ensure smooth performance. No need to click a button - formatting happens instantly.
Every transformation is saved to history (up to 20 items). Use Undo/Redo to step through changes, or click any history item to restore that state. History persists in your browser.
Absolutely. All processing happens entirely in your browser using JavaScript. Your text is never sent to any server, never stored remotely, and never logged.
You can upload TXT, MD (Markdown), CSV, and JSON files up to 5MB. Simply drag and drop or use the upload button.
Yes! Ctrl+Z to undo, Ctrl+Y to redo, Ctrl+Shift+C to copy output. Power users can work efficiently without touching the mouse.
Yes! Install the app as a Progressive Web App (PWA) from your browser, and you can format text even without an internet connection.
String Formatter works in all modern browsers including Chrome, Firefox, Safari, and Edge. The tool is optimized for desktop use but works on mobile devices too.
We welcome feedback! You can submit issues or feature requests through our GitHub repository. We're constantly improving based on user input.
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Join thousands of developers who use String Formatter daily.
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