JavaScript Formatter & Beautifier
Format, beautify, and standardise unformatted JavaScript code with clean block indentation, or compress scripts to reduce download size. 100% client-side.
What is JavaScript Formatting & Beautification?
JavaScript Beautification restores structural readability to obfuscated or compressed code blocks. It organizes nested functions, loops, object literals, array definitions, and conditional blocks with standard tab or space indentation.
Formatting Rules & Block Handling
| JavaScript Construct | Syntax Example | Formatter Behavior |
|---|---|---|
| Functions & Methods | function calc(a, b) { ... } |
Opens block body on same line and indents inner execution statements. |
| Control Flow Blocks | if (condition) { ... } else { ... } |
Aligns control conditions cleanly and manages nested scope indentation levels. |
| Object Literals & Arrays | const config = { key: "value" }; |
Formats key-value pairs with consistent spacing around separators. |
How to use JavaScript Formatter & Beautifier
- Enter or paste the values requested in the input fields.
- Choose any options provided, then run an action button if the tool requires one.
- Review the result and copy or adjust it as needed.
JavaScript Formatter & Beautifier features
- Available tool controls: Beautify / Format, Minify JS, Download .js File.
- Input and option fields: Indentation:, Strip Comments, Raw JavaScript Input:.
Using JavaScript Formatter & Beautifier in a development workflow
Use a formatter when readability or consistent style is the main goal. Start with a representative source sample, select the intended output style, and compare key values before replacing the original. A formatter should change presentation, but malformed input or unsupported syntax can still produce errors or unexpected output.
Use a real page or request as a sample
- Try one representative URL or document, then check the output in the browser or server configuration where it will be used.
- Pay attention to these page fields: Indentation:, Strip Comments, Raw JavaScript Input:. Confirm which fields are inputs, options, or output areas before processing.
- The page exposes these relevant actions: Beautify / Format, Minify JS, Download .js File. Choose only the action that matches the result you need.
- Open the result in its intended context and check the browser’s behavior, not only the generated text. Keep the original value to help diagnose differences.
Verify the result in its destination
Check generated markup and metadata against the actual deployed page. Validate links, escaping, canonical URLs, and platform-specific rendering before release.