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AMP Validator

AMP Validator makes code error-free, ensuring web standards compliance.

Drag & drop your AMP HTML file here

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What is an AMP Validator?

An AMP Validator is a tool that checks your Accelerated Mobile Pages (AMP) HTML code against Google's official AMP specification. It scans your markup for errors, missing required tags, and disallowed elements that could prevent your pages from being served as valid AMP results in search engines. Whether you are a developer, an SEO professional, or a content creator, validating your AMP code ensures your mobile pages load instantly and qualify for enhanced visibility in Google Search.

How AMP Validation Works

AMP validation compares your HTML against a strict set of rules defined by the AMP specification. The validator checks for:

  • Presence of required AMP runtime scripts
  • Correct AMP boilerplate CSS in the head section
  • Valid viewport meta tag configuration
  • Proper use of AMP-specific components (amp-img, amp-video, amp-carousel)
  • Absence of prohibited tags like custom JavaScript, iframes, and forms
  • Required canonical link and AMP attribute on the HTML tag

Why AMP Validation is Important

Validating your AMP pages is essential for both search engine optimization and delivering a fast mobile experience. Here is why it matters:

  • Faster mobile loading: Valid AMP pages are pre-rendered by Google's AMP Cache, delivering near-instant load times
  • Enhanced search visibility: AMP-valid pages can appear in Google's Top Stories carousel and AMP-specific rich results
  • Better user experience: Lightweight, error-free pages reduce bounce rates and increase engagement
  • Higher conversion rates: Faster pages directly correlate with improved conversion metrics for ecommerce businesses
  • Mobile-first indexing: Google prioritizes mobile-optimized content, and valid AMP pages signal mobile readiness

Common AMP Errors Detected

Our AMP Validator identifies the most frequent issues that prevent AMP compliance:

  • Missing <script async src="https://cdn.ampproject.org/v0.js"></script> runtime
  • Incomplete or missing AMP boilerplate CSS
  • Absent <meta name="viewport"> tag
  • Missing rel="canonical" link
  • Use of <img> instead of <amp-img>
  • Prohibited tags: <script>, <iframe>, <form>
  • Missing or amp attribute on the HTML tag
  • Inline styles exceeding the 75KB AMP CSS limit

How to Use the Free AMP Validator Online

  1. Paste your AMP HTML source code in the input area, or import an HTML file using the Import File tab
  2. Click the Validate AMP button to start the analysis
  3. Review the validation results — errors, warnings, and passed checks are clearly categorized
  4. Fix the reported issues in your source code and re-validate until all errors are resolved

Benefits of Using an AMP Validator

  • Instantly identify errors that block your pages from AMP search features
  • Improve mobile SEO by ensuring compliance with Google's AMP standards
  • Save development time with clear, actionable error messages and fix suggestions
  • Reduce bounce rates by delivering fast, error-free mobile pages
  • No installation required — works directly in your browser, free of charge

Best Practices for Writing Valid AMP HTML

Follow these guidelines to keep your AMP pages compliant and performant:

  • Always include the AMP boilerplate code and runtime script in the <head>
  • Use <amp-img> with explicit width and height attributes instead of <img>
  • Keep all CSS inline within a single <style amp-custom> tag under 75KB
  • Avoid external stylesheets and custom JavaScript entirely
  • Use AMP components for interactive elements (amp-carousel, amp-accordion, amp-form)
  • Always include a canonical link pointing to the non-AMP version of the page
  • Test with this validator before deploying to production

Who Should Use an AMP Validator?

  • Web developers building AMP pages for clients or projects
  • SEO specialists optimizing mobile search performance
  • Digital marketing agencies managing AMP content at scale
  • Content publishers and bloggers targeting Google's Top Stories
  • Ecommerce businesses looking to improve mobile page speed and conversions
  • QA engineers validating AMP compliance before deployment

Frequently Asked Questions

  • What does an AMP Validator do?

    An AMP Validator checks your Accelerated Mobile Pages HTML code against Google's official AMP specification. It identifies errors, missing required tags, and disallowed elements, then provides suggestions to fix them so your pages qualify for AMP-enhanced search results.

  • Does AMP validation improve SEO?

    Yes. Valid AMP pages load faster on mobile devices, which is a key Google ranking factor. AMP-valid pages can appear in Google's Top Stories carousel and benefit from Google's AMP Cache for near-instant loading, giving you a significant SEO advantage.

  • Can beginners use an AMP Validator?

    Yes. Our free AMP Validator tool is designed for all skill levels. Simply paste your AMP HTML code or import a file, click Validate, and the tool highlights every error and warning with clear, actionable fix suggestions.

  • Does AMP validation work on all browsers?

    Yes. This AMP Validator Tool runs entirely in the browser and works on all modern browsers including Chrome, Firefox, Safari, and Edge on both desktop and mobile devices.

  • Is the AMP Validator Tool free?

    Yes. Our AMP Validator is 100% free with no registration, no usage limits, and no hidden charges. You can validate as many AMP pages as you need.