What is mobile-first indexing?

Google crawls and indexes pages with its smartphone crawler, so the mobile version of a page is the one that counts. Content, links or markup that appear only on desktop are left out.

Does it render JavaScript?

No. It compares the HTML each version returns. For differences that appear after JavaScript runs, use AI Crawler View.

Does it measure mobile speed?

No. Use the Core Web Vitals Snapshot for speed.

How much does the Mobile Parity Checker cost?

5 credits per run, shown before the run starts. An AI agent can run the same tool over the REST API or MCP with a workspace API key.

Pricing

SEO · Rendering and mobile · 5 credits

Mobile-First Indexing Checker: Mobile vs Desktop

Find content, links and markup missing from the mobile version of a page, which is the version Google indexes.

Mobile Parity Checker 1.0.0 · price a33-v1 · retrieved at run time · Run it from an AI agent

What the Mobile Parity Checker checks

Fetch a page as a phone and as a desktop and compare what Google's mobile-first indexing sees: content, headings, structured data, title, description, robots, canonical, links, images, hreflang and the viewport.

Content and headings on mobile and desktop
Structured data, title, description, robots and canonical
Links, images and hreflang
The viewport tag

What it does not do

Rendering JavaScript
Measuring mobile speed (use the Core Web Vitals Snapshot)
Visual layout or tap-target checks

Questions about the Mobile Parity Checker

What is mobile-first indexing?: Google crawls and indexes pages with its smartphone crawler, so the mobile version of a page is the one that counts. Content, links or markup that appear only on desktop are left out.
Does it render JavaScript?: No. It compares the HTML each version returns. For differences that appear after JavaScript runs, use AI Crawler View.
Does it measure mobile speed?: No. Use the Core Web Vitals Snapshot for speed.
How much does the Mobile Parity Checker cost?: 5 credits per run, shown before the run starts. An AI agent can run the same tool over the REST API or MCP with a workspace API key.