JavaScript Formatter
Format JavaScript code.
🔒 Your data stays in your browser.
Quick answer: JavaScript formatting restructures minified code into readable, properly indented output so debugging and code review become quicker and easier.
What is JavaScript Formatter?
Format JavaScript code. DevToolsHub provides a focused, private workspace that works directly in modern browsers, helping developers format, decode, validate, or inspect content without uploading sensitive data.
How to use JavaScript Formatter
- Paste the JavaScript code into the input box.
- Run the formatter to apply consistent indentation and spacing.
- Copy the cleaned-up code into your editor or project.
When should you use it?
Review bundled scripts
Use it to inspect minified JS from a build process or CDN before troubleshooting a runtime bug.
Format pasted snippets
Clean up copied code samples from docs or issue reports before saving or sharing them in your workflow.
Features
- Free and available without registration
- Local browser processing for privacy
- Copy, paste, clear, examples, and downloads
- Responsive and keyboard-friendly interface
Frequently asked questions
How do I format JavaScript code online?
Paste the code into the tool, click Run Tool, and the formatter will re-indent it for easier reading and editing.
Why format minified JavaScript?
Formatting makes code easier to scan, debug, and compare, especially when reviewing compiled or compressed output.
Is formatting JavaScript safe?
Yes. It mainly adjusts whitespace and indentation and does not change the logic of valid JavaScript code.