JavaScript Formatter & Beautifier
Beautify JavaScript by re-indenting minified or single-line code into a readable structure. When you are staring at a bundled or minified script trying to understand what it does, consistent indentation makes an enormous difference. This formatter reformats based on braces, brackets and statement boundaries, adding newlines and indentation for blocks while being careful not to break strings, template literals or comments. It is a lightweight structural beautifier meant for reading and quick edits rather than a full linter. Paste your JavaScript, click format, and copy the cleaned-up version. All processing happens in your browser, so proprietary or third-party code you are inspecting is never uploaded to any server.
How to use JS Formatter / Beautifier
- Paste minified or compact JavaScript.
- Click format to beautify it.
- Copy the indented code.
Frequently asked questions
What does the JS beautifier produce?
It reformats minified or one-line JavaScript into indented code with proper brace placement and block structure so it is readable.
Does formatting change how the code runs?
No. It only adds whitespace and line breaks. The logic and tokens are unchanged, so behavior stays the same.
Can it help me read minified library code?
Yes. Paste minified JS and it expands it into a structured layout, though original variable names cannot be recovered.
What is JS Formatter / Beautifier?
Beautify JavaScript by re-indenting minified or single-line code into a readable structure. When you are staring at a bundled or minified script trying to understand what it does, consistent indentation makes an enormous difference.
Is JS Formatter / Beautifier free to use?
Yes. JS Formatter / Beautifier is completely free, with no sign-up and no usage limits.
Does JS Formatter / Beautifier work in a web browser?
Yes. JS Formatter / Beautifier runs in any modern web browser. There is nothing to download or install.
Is my data private with JS Formatter / Beautifier?
Yes. JS Formatter / Beautifier runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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