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Output
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Recent runs
Only execution metadata (time, action, status, duration, and result size) from the last 30 days is stored in this browser, up to 20 runs. Inputs, result content, filenames, location, and device data are never saved.
Tool-Specific Notes
Reformat JavaScript around its syntax tree
JavaScript Formatter parses scripts and rebuilds their layout with readable indentation, line breaks, object literals, arrays, callbacks, and control-flow blocks.
What to check
A syntax error must be fixed before a formatter can reliably rebuild the file. Review generated code, template literals, optional chaining, and the project’s preferred semicolon or quote rules before committing the result.
Worked example
A compact fetch call with chained then handlers becomes a vertical chain whose callbacks and returned values can be followed line by line.
Search Answer
JavaScript Formatter Search Answer
JavaScript Formatter is a formatters / viewers category tool for quick validation and testing, with easy result copying and downloading.
Key Points
- Category: Formatters / Viewers
- Execution mode: browser
- Recent runs is stored in your browser only.
- Inputs are processed during execution but not stored. Recent runs stays in the browser, while lightweight visit, usage, and like metrics are recorded.
How to Use
- Paste or type your input.
- Choose the needed options or fill the secondary input.
- Run the tool from the run bar above the panels.
- Review the result, then copy or download it.
Search Answer
Frequently Asked Questions
What does JavaScript Formatter do?
JavaScript Formatter makes pasted data easier to read.
Does JavaScript Formatter store my input?
Inputs are processed during execution but not stored. Recent runs stays in the browser, while lightweight visit, usage, and like metrics are recorded.
When should I use JavaScript Formatter?
JavaScript Formatter is useful when you need to review or organize Formatters / Viewers data quickly.
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Indents pasted XML for inspecting element nesting and attributes. Review mixed-content and whitespace-sensitive documents after formatting.
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YAML Formatter
Formats pasted YAML with consistent indentation and line breaks so mappings and sequences are easier to inspect in configuration files.