Basic formatting and bracket checks only β not a full linter or runtime debugger.
About This Tool
JavaScript Formatter beautifies or minifies JS in your browser and shows basic syntax hints with line numbers when brackets do not match. It is not a full linter or runtime. Processed locally β no upload needed.
How to Use
- Paste JavaScript
- Click Beautify or Minify
- Fix any reported syntax issues
- Copy the result
- Clear when done
Common Use Cases
- Clean up messy snippets
- Minify small scripts before paste
- Spot unmatched braces quickly
- Prepare examples for docs
- Tidy copied console code