Representative example
This example reflects the implemented transformation or analysis.
Input
<div><h1>Hello</h1><p>World</p></div>Output
<div>
<h1>Hello</h1>
<p>World</p>
</div>HTML Formatter
Beautify HTML with two-space indentation or minify spacing, with byte statistics, copying, samples, and file download.
- Free public tool
- No sign-up for this tool
- Processing clearly labeled
- Instant results
Content last reviewed
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Quick Start
Add input
Paste an HTML fragment or document and choose Beautify or Minify.
Choose options
Beautify and Minify modes with a resizable split view.
Review the result
Check the output or diagnostics, then use the available copy or download control where shown.
Examples
Input and output example 1
Input
<div><h1>Hello</h1><p>World</p></div>Output
<div>
<h1>Hello</h1>
<p>World</p>
</div>About the HTML Formatter
HTML Formatter addresses a focused developer workflow without requiring a command-line setup. Beautify HTML with two-space indentation or minify spacing, with byte statistics, copying, samples, and file download. Results update from the supplied input, making it useful for quick inspection, debugging, documentation, or test preparation.
In this tool, HTML Formatter: processing runs in the browser and the tool does not call an external conversion API. Input remains in page memory unless a confirmed browser feature such as file reading or local settings is described above.
How to Use HTML Formatter
Paste an HTML fragment or document and choose Beautify or Minify.
Configure beautify and minify modes with a resizable split view.
Review the generated output, status, or validation message.
Copy or download the result when that control is available, and verify it in the destination where it will be used.
Key Features
Focused processing
Beautify mode uses
js-beautifywith two-space indentation and 100-character wrapping. Minify mode applies whitespace-focused text replacements.Input guidance
HTML fragments and complete HTML text documents.
Immediate feedback
The formatter may report processing errors, but it is not a standards-complete HTML validator.
When to Use HTML Formatter
Application development
Use HTML Formatter to prepare or inspect values while implementing a feature.
Fault isolation
Run a small known input through HTML Formatter to distinguish formatting or syntax problems from surrounding application behavior.
Reviewable examples
Create a concise <div> for tests, documentation, or code review.
How It Works
Processing flow
Beautify mode uses js-beautify with two-space indentation and 100-character wrapping. Minify mode applies whitespace-focused text replacements.
Result handling
During processing, HTML Formatter: the result is rendered directly in the tool interface. Validation failures are displayed instead of being silently treated as successful output.
Supported Formats and Options
Formats
Accepted input
HTML fragments and complete HTML text documents
Displayed output
<div>
Options
Available controls
Beautify and Minify modes with a resizable split view
Common Errors and Troubleshooting
Common errors
Invalid or incomplete input
The formatter may report processing errors, but it is not a standards-complete HTML validator.
Unexpected result
Confirm that the selected mode or syntax matches the source and that the input is complete.
Troubleshooting guide
Resolve the reported error
The formatter may report processing errors, but it is not a standards-complete HTML validator. Reduce the input to the smallest failing case and confirm the selected controls.
Check an unexpected result
Review the documented limitation for HTML Formatter, then compare a known example with the same mode or syntax before processing a larger value.
Limitations and Important Notes
Minification is intentionally simple and can affect whitespace-sensitive inline layouts or <pre> content. It does not optimize scripts, styles, or attributes.
Privacy and Data Processing
HTML Formatter performs its implemented transformation in the browser without calling an external processing API. Input is held in the current page state, so still avoid unnecessary secrets and clear the field on a shared device.
Tips and Best Practices
Practical tips
Keep the original html fragments and complete html text documents before using HTML Formatter.
Exercise the error case described as: The formatter may report processing errors, but it is not a standards-complete HTML validator.
Check the result against this limitation: Minification is intentionally simple and can affect whitespace-sensitive inline layouts or
<pre>content. It does not optimize scripts, styles, or attributes.
Best practices
Prepare a representative input
Start with a small value whose expected result you understand, then add the edge cases relevant to HTML Formatter. Preserve the original when the conversion or formatting is destructive.
Verify in context
Minification is intentionally simple and can affect whitespace-sensitive inline layouts or <pre> content. It does not optimize scripts, styles, or attributes. Treat the displayed result as an intermediate artifact and test it in the runtime, parser, database, or document where it will actually be used.
Technical Details
Implementation note: HTML Formatter: beautify mode uses js-beautify with two-space indentation and 100-character wrapping. Minify mode applies whitespace-focused text replacements.
Who Is This For?
Developers, QA engineers, technical writers, analysts, and students who need beautify HTML with two-space indentation or minify spacing, with byte statistics, copying, samples, and file download.
Frequently Asked Questions
Does HTML Formatter send input to an API?
No external processing API is used by this tool; its implemented operation runs in the browser.
What input is supported?
HTML fragments and complete HTML text documents.
Why did the tool show an error?
The formatter may report processing errors, but it is not a standards-complete HTML validator.
What should I verify before using the result?
Minification is intentionally simple and can affect whitespace-sensitive inline layouts or <pre> content. It does not optimize scripts, styles, or attributes.