Pemercantik JavaScript
Format messy or minified JavaScript into clean, readable code. Powered by Prettier, so the output matches what your editor would produce.
100% gratis. Berjalan sepenuhnya di browser Anda - file dan data Anda tidak pernah meninggalkan perangkat Anda dan tidak ada yang diunggah ke server mana pun.
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Tentang alat ini
Format messy, minified or inconsistently indented JavaScript into clean readable code. This uses Prettier - the same formatter most editors and CI pipelines run - so the output matches what your team's tooling would produce.
Cara menggunakan alat ini
- Paste JavaScript snippetDrop any messy, minified, or inconsistent JS into the input area.
- Run beautifyApply Prettier formatting with consistent indentation and spacing.
- Review parse errorsIf formatting fails, fix reported syntax errors first, then rerun.
- Copy formatted outputUse cleaned code in commits, reviews, or debugging sessions.
Mengapa menggunakannya
- Produces stable formatting aligned with common team tooling.
- Great for reading compressed or poorly formatted scripts.
- Improves code review readability and maintainability.
- Runs locally in browser for quick, privacy-friendly formatting.
Penggunaan umum
- Cleaning pasted snippets before code reviews.
- Inspecting one-line minified bundles during debugging.
- Standardizing style before sharing code examples.
- Learning unfamiliar JavaScript by making structure readable.
Tips untuk hasil lebih baik
- Format early while debugging to reduce cognitive load.
- Fix syntax errors before expecting formatter output.
- Use project formatter settings in CI for repository consistency.
- Pair beautify with linting for both style and correctness checks.
Kesalahan yang harus dihindari
- Expecting beautifier to repair broken JavaScript logic.
- Assuming formatted code implies semantic correctness.
- Manually reformatting large files instead of automated tooling.
- Ignoring parser error locations and guessing fixes.
Pertanyaan yang sering diajukan
Yes, it runs Prettier's standalone build directly in your browser. The output is identical to what you would get from a local Prettier install with the same settings, so it will not fight your project's formatting.
No. Prettier only reprints the code from its parsed syntax tree - it never rewrites logic. If your code has a syntax error the tool reports the exact line and column instead of guessing, because formatting broken code would produce misleading output.
It handles modern JavaScript and JSX. Minified single-line files reformat perfectly - that is one of the most common uses. For heavy TypeScript-specific syntax, results may vary since the parser here targets JavaScript.
No. Everything runs in your browser, so proprietary or unreleased code never leaves your machine. The tool also works offline once the page has loaded.
Yes. JS Beautifier is free for normal use with no account required, and ToolBox does not add a watermark to your result.
Most tools in this category run in your browser so the file stays on your device. If a tool needs a temporary server job, files are handled for that job only and are not kept as a lasting archive.
No install needed. Open JS Beautifier in your browser, add your file or paste your input, then download or copy the result.
Yes on modern mobile browsers. For large files, a desktop browser is usually faster and more reliable.
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