If your AMP pages have invalid markup, Google won’t cache them. That means no lightning-fast load times in search results.
You’ll lose mobile traffic without even knowing why. The real issue is that AMP errors are invisible to most site owners.
AMP Validator is a free browser-based tool that checks whether your Accelerated Mobile Pages follow the strict HTML rules Google requires. It scrapes your page, tests the code against AMP’s specifications, and tells you exactly what’s broken — no login needed.
Why It Matters for SEO
Google only serves valid AMP pages in its Top Stories carousel and caches them for near-instant loading. If your markup fails, you’re out of that section entirely.
Most people miss that AMP isn’t optional if you want premium mobile placement. Google recrawls most sites every 3-7 days, and if your AMP version still has errors, you won’t appear.
Here's what actually happens: a single missing closing tag or invalid attribute kills the entire AMP status. You might rank fine, but your page loads slowly from your server instead of Google’s cache. That hurts bounce rate and time on site.
How to Use It
- Go to https://scrawl.tools/tools/amp-validator (no login needed)
- Paste the full URL of your AMP page
- Click “Validate” and wait 10 seconds for results
It’s free, fast, and shows every error in plain language — no developer jargon.
What the Results Tell You
The tool highlights every line with invalid code. You’ll see red error messages like “The tag ‘script’ is disallowed except in specific forms” or “Attribute ‘align’ is invalid.” These aren’t suggestions — they’re hard stops.
Fix each one, revalidate, and repeat. If the tool says “No errors found,” Google will cache your page. That’s it.
You don’t get performance scores or SEO tips here — just a yes/no on AMP validity. That’s what makes it reliable.
3 Mistakes Most People Make
- They test the desktop URL instead of the AMP version. The validator won’t catch that you’re on the wrong page — it just checks what you give it.
- They ignore small errors like extra spaces or wrong casing. Here's what actually happens: `<img src="photo.jpg" width=400 height=300>` fails because width and height must be strings: `width="400"`.
- They assume valid HTML means valid AMP. It doesn’t. AMP bans entire tags like `<img>` unless you use `<amp-img>`. Most people miss that even allowed tags need exact formatting.
Run your AMP pages through the Schema Checker too — structured data errors won’t stop caching, but they hurt rich snippets.
Still Publishing AMP Pages Without Testing Them?
You’re gambling with mobile visibility. One typo means no fast loading, no Top Stories placement, no second chances.
Check your AMP pages now at https://scrawl.tools/tools/amp-validator — it’s free, no login needed, and takes less than a minute.