AMP Validator: Test and Validate AMP HTML
Validate your Accelerated Mobile Pages with our free AMP validator. Detect HTML errors, improve mobile SEO, and fix compliance issues instantly. Test now.
About AMP Validator
The AMP Validator checks your Accelerated Mobile Pages code against official AMP specifications to ensure technical compliance. Designed for web developers, SEO specialists, and digital publishers, this tool helps you identify syntax errors, unsupported tags, and missing attributes that prevent pages from rendering correctly in mobile search results.
Running directly in your browser, the validator analyzes your markup instantly without requiring downloads or account registration. Test your code before deployment to ensure your mobile content qualifies for AMP-specific search features and delivers rapid mobile loading speeds.
Key features
- Real-time AMP HTML syntax and markup validation
- Precise error reporting with direct line-number identification
- Browser-based analysis with zero software installation required
- Detection of invalid tags and missing mandatory attributes
- Support for direct HTML code input and live inspection
- Verification aligned with official AMP project technical standards
How to use AMP Validator
- Paste your AMP HTML code directly into the validator input box.
- Click the validate button to run the compliance check.
- Inspect the report to identify any syntax errors, warnings, or missing tags.
- Update your markup using the highlighted line numbers for guidance.
- Run the validation check again to confirm error-free AMP status.
Who is it for?
- Web developers auditing custom AMP templates before pushing code to production
- SEO professionals troubleshooting AMP indexing warnings in Google Search Console
- News publishers ensuring editorial articles meet AMP standards for top stories placement
- Technical writers checking automated CMS markup for invalid AMP tags
Frequently asked questions
What is an AMP validator?
An AMP validator is a technical tool that analyzes webpage code to confirm it adheres to the strict HTML, JavaScript, and CSS limitations set by the Accelerated Mobile Pages open-source specification.
Why does an AMP page need to be valid?
Search engines like Google will not serve pages through AMP caches or display them with AMP-specific enhancements if the markup contains validation errors. Invalid pages are treated as standard web pages, losing speed and placement benefits.
Is this AMP validator free to use?
Yes, this tool is completely free to use directly in your web browser with no registration or subscription required.
Can I validate AMP code before publishing it live?
Yes, you can paste raw HTML markup into the tool to inspect and correct code locally before deploying changes to your live web server.
What are the most common AMP validation errors?
Common issues include using prohibited HTML tags (like standard img instead of amp-img), including author-written external JavaScript, or exceeding the 75KB inline CSS limit.