Free tool · no signup · runs now
Meta viewport checker
Without a viewport tag, phones render your desktop layout zoomed out — the layout Google's mobile review sees first.
Part of the Technical SEO audit & onpage SEO audit group — also included in the free full scan.
Checks this exact page only — it does not crawl the rest of your domain.
One free scan · anonymous preview · sign in to save the full report
Meta viewport present (width=device-width, initial-scale=1)Static example for Meta viewport checker; run the check above for your own result.What it checks
See whether phones render your layout as designed, not as a zoomed-out desktop.
Meta viewport presence and value.
Reads the no-JS response only, never runs JS. One fetch shared with the full scan.
What good looks like
Good looks like the viewport tag present — width=device-width with initial-scale=1 is the canonical value. Missing fails; a non-HTML response is na.
How to fix it
Add <meta name="viewport" content="width=device-width, initial-scale=1"> to the head.
What the full scan adds
- All 34 checks in one pass — one URL, every category, a single report.
- Evidence on every row: the values found, why it fails, the fix, and a deep link per check.
- Your score against the global distribution — see where you stand.
- Sign in and the report is kept for 1 year; anonymous reports expire after 7 days.
Official source: MDN, viewport meta tag · Rule: meta-viewport v1 · checker library
Tracking a Google update? Run the update impact check or read the search update radar.
Frequently asked questions
Is the Meta viewport checker free?
Yes — one free run without an account, with an anonymous preview. Sign in to save the full report and keep the evidence.
How often should I run it?
After every deploy that touches routing, templates or the checked file — and after each Google core update, to confirm nothing regressed.
Does the check run JavaScript?
No — it reads the no-JS response only, exactly what a crawler or AI agent sees when it fetches the URL.
How is this different from a full audit?
This page runs one check with its full criteria and fix notes. The free full scan runs every category at once and keeps the evidence per URL — use it once you know which checks matter.