JavaScript Formatter
JavaScript Formatter
Format JavaScript snippets for easier debugging and sharing.
Output size
0chars
JS output is beautified with predictable line breaks and spacing.
File input
Choose a file
Click, drop, or paste from clipboard.
More actions
Input: manual
Input: manualInputsText/FileManual input • Auto-updateWaiting
Input: manualLive update0 msScore 58/100 (Risky output)
Copy report details includes output + run metadata.
Your input is processed locally in your browser whenever possible. We do not store your data.
Flow
- Parse JavaScript statements and expression blocks.
- Apply spacing and indentation conventions.
- Output readable JavaScript source text.
Example
Worked example: compact function
- 1 Input one-line arrow function with condition.
- 2 Formatter adds line breaks and spacing.
- 3 Output shows structured readable control flow.
JavaScript snippet is easier to reason about.
How
- Paste JavaScript code into the input area.
- Run formatter to produce readable output.
- Copy result into your editor or PR comment.
Cases
- Debug minified snippets copied from logs.
- Normalize style in shared examples.
- Prepare code for review and pair debugging.
Avoid
- Using formatter output as a substitute for linting rules.
- Assuming syntax errors are always auto-corrected.
- Forgetting semicolon or transpilation constraints after formatting.
FAQ
Can this format modern JS syntax?
Yes, common ES syntax is supported for standard formatting scenarios.
Does formatting execute my code?
No, code is parsed and reformatted locally without execution.
Should I still run project lint after this?
Yes, formatter helps readability while lint enforces project-specific rules.
Switch
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