On google mobile-friendly test retired december 1 2023, website owners lost one of the most familiar tools in SEO history. The announcement that google mobile-friendly test retired december 1 2023 caught many SEOs off guard, even though Google had signaled the change for months.
Google quietly shut down the Mobile-Friendly Test page and redirected users to newer tools built around modern web performance standards.
The retirement wasn't random. Google had already removed the Mobile Usability report from Search Console in late 2023, signaling that its focus had shifted from basic "mobile-friendly or not" labels toward Core Web Vitals — speed, stability, and interactivity. Since google mobile-friendly test retired december 1 2023, those vitals have become the primary way Google evaluates mobile experience.
That leaves many publishers confused about how to check mobile compatibility today. Which tool replaces the old test? Does mobile-friendliness still affect rankings? And what should you actually measure now that google mobile-friendly test retired december 1 2023 is no longer part of the toolset?
This guide answers all of that. You'll learn why the tool was retired, which free replacements work best, how to run mobile audits step by step, and which metrics matter in 2024 and beyond. Let's dig in.
Why Google Retired Its Mobile-Friendly Test
Ever since google mobile-friendly test retired december 1 2023, SEOs have asked why Google pulled the plug. The answer: its technology was outdated and its purpose had been fulfilled. The tool relied on Chrome 41, an old browser engine from 2015, and delivered only a simple pass/fail label — "Page is mobile friendly" or "Page has issues."
By 2023, mobile traffic dominates the web. Google's own Search Central documentation notes that most searches now happen on mobile devices, which is why mobile-first indexing has been the default for all sites since 2021. A binary yes/no check simply offered less value than richer diagnostics, which is why google mobile-friendly test retired december 1 2023 made strategic sense.
In its official announcement, Google stated: "As we continue to improve our tooling, we're retiring the Mobile-Friendly Test and instead recommend PageSpeed Insights and Lighthouse for testing mobile-friendliness."
How to apply this: accept that the pass/fail era is over, and shift your workflow toward performance-based mobile auditing tools described below.
What Replaced the Mobile-Friendly Test
After google mobile-friendly test retired december 1 2023, Google pointed users to two free replacements: PageSpeed Insights and Lighthouse. Neither tool gives you a single "mobile friendly" badge, but both deliver far deeper data about how your pages behave on a phone.
PageSpeed Insights runs a real Chrome user-agent simulation against your URL and reports Core Web Vitals, accessibility issues, and SEO basics for mobile specifically. It also shows field data from the Chrome User Experience Report (CrUX), meaning real-user measurements, not just lab guesses.
For teams that built reporting around google mobile-friendly test retired december 1 2023, this field data is a meaningful upgrade.
Lighthouse, built into Chrome DevOps tooling, runs the same audit engine locally and is free within every modern Chrome browser. Here's how the options compare:
| Tool | What it checks | Best for | Action to take |
|---|---|---|---|
| PageSpeed Insights | Core Web Vitals, SEO, accessibility | Quick URL checks | Test key landing pages monthly |
| Lighthouse | Performance audits in Chrome DevTools | Developer debugging | Fix flagged render-blocking assets |
| Search Console | Page experience signals sitewide | Trend monitoring | Watch the Core Web Vitals report |
| CrUX Dashboard | Real-user field data | Historical tracking | Compare before/after fixes |
How to apply this: bookmark PageSpeed Insights and test your top 10 pages by traffic this week.
How to Check Mobile-Friendliness After December 2023
Running a mobile audit today takes about two minutes per page. The workflow differs slightly from what existed before google mobile-friendly test retired december 1 2023, so follow these steps carefully.
- Open PageSpeed Insights and paste your URL.
- Wait for the report to load, then confirm the "Mobile" tab is selected — it's the default.
- Review the Core Web Vitals assessment at the top: LCP, INP, and CLS.
- Scroll to the "Diagnostics" section and note any mobile-specific warnings.
- Cross-check in Google Search Console under the Core Web Vitals report for sitewide trends.
A common scenario: a blog passes performance checks but fails the accessibility audit because tap targets sit too close together. PageSpeed Insights flags this under "Accessibility" — something the old test never surfaced before google mobile-friendly test retired december 1 2023 removed it from the picture.
How to apply this: fix accessibility and performance warnings in priority order, starting with anything marked red in the Core Web Vitals section.
Does Mobile-Friendliness Still Affect Google Rankings?
Yes — mobile usability remains a ranking factor even though google mobile-friendly test retired december 1 2023 eliminated the tool that measured it directly. Since 2020, Google has used mobile-first indexing, meaning it evaluates the mobile version of your site for indexing and ranking regardless of the device a searcher uses.
The old binary "mobile-friendly" signal has been folded into the broader page experience signals, which include Core Web Vitals (LCP, INP, CLS), HTTPS security, and the absence of intrusive interstitials. Google's Search Central documentation confirms that page experience remains one of many ranking inputs, not a tiebreaker on its own.
The practical implication is significant, and it explains why google mobile-friendly test retired december 1 2023 didn't shake up rankings: a site can technically be "mobile friendly" in the old sense yet still lose rankings to a competitor whose mobile pages load faster and shift less during load. Performance quality now matters more than a checkbox.
How to apply this: compare your Core Web Vitals against the top three ranking pages for your primary keyword, and treat any gap as a to-do list.
The Metrics That Matter Instead of a Pass/Fail Score
Retiring the mobile-friendly test pushed publishers toward measurable thresholds. Now that google mobile-friendly test retired december 1 2023 is settled history, Google defines specific performance targets, and hitting them is the modern equivalent of earning the old "mobile friendly" label.
- LCP (Largest Contentful Paint): should occur within 2.5 seconds of page load.
- INP (Interaction to Next Paint): should stay under 200 milliseconds; it replaced FID in March 2024.
- CLS (Cumulative Layout Shift): should remain below 0.1.
- Tap target spacing: interactive elements need enough spacing for fingers, still audited by Lighthouse.
In one documented case type, publishers who replace oversized hero images with modern formats like WebP and add explicit image dimensions routinely move from "Poor" to "Good" LCP ratings — the kind of improvement the old tool could never diagnose before google mobile-friendly test retired december 1 2023 made deeper diagnostics necessary.
How to apply this: pull your CrUX field data from Search Console, note which of the three vitals is weakest, and fix that single metric first for the biggest ranking return.
Frequently Asked Questions About google mobile-friendly test retired december 1 2023
Why did Google retire the mobile-friendly test on that date?
Google retired it because the underlying Chrome 41 engine was aging and the tool duplicated what PageSpeed Insights and Lighthouse already do better. If you relied on it for client reports, the same checks now appear in the "Diagnostics" section of PageSpeed Insights, which tests the mobile-friendly test retired december 1 2023 conditions in far more depth.
Simply swap the URL in your reporting workflow.
Google retired it because the aging Chrome 41 engine was outdated, and the google mobile-friendly test retired december 1 2023 duplicated what PageSpeed Insights and Lighthouse now handle better.
Is the Mobile Usability report in Search Console also gone?
Yes, Google removed the Mobile Usability report from Search Console in December 2023 alongside the test itself. If you followed the mobile-friendly test retired december 1 2023 retirement, use the Core Web Vitals report instead for sitewide mobile health. A small site with fewer than 1,000 daily impressions may see limited data there, so pair it with manual PageSpeed checks.
Yes, Google also removed the Mobile Usability report in December 2023, so after the google mobile-friendly test retired december 1 2023 you should lean on Core Web Vitals instead.
Does the retirement mean mobile-friendliness no longer matters for SEO?
Not at all — the signal was absorbed into page experience and Core Web Vitals, not deleted. Sites worried after the mobile-friendly test retired december 1 2023 should check whether their mobile rankings dipped; typically they won't if vitals stay "Good." Exception: pages that were only "mobile friendly" via a separate m-dot URL may need redirect audits.
Not at all, since the signal moved into page experience and Core Web Vitals, and the google mobile-friendly test retired december 1 2023 does not mean mobile-friendliness stopped counting.
Can I still run a mobile-friendly test on other websites for free?
Yes, free alternatives exist beyond Google's tools. Bing's URL inspection tools, PageSpeed Insights, and Lighthouse all let you evaluate competitors after the mobile-friendly test retired december 1 2023. For agency-style audits, tools like Screaming Frog's SEO Spider can crawl in Googlebot Smartphone mode, simulating how Google's mobile crawler sees any site.
Free options remain, and after the google mobile-friendly test retired december 1 2023 you can still evaluate competitors using Bing's URL inspection, PageSpeed Insights, and Lighthouse.
What should I do if my pages were only "passing" with the old test?
A pass under the old tool never guaranteed good performance — it only confirmed the layout didn't break on small screens. After the mobile-friendly test retired december 1 2023, run those pages through PageSpeed Insights; many will show "Needs Improvement" vitals. Prioritize image compression and lazy loading, which deliver the fastest measurable wins.
Conclusion: Move Forward With Modern Mobile Testing
The retirement of the mobile-friendly test marked a shift, not a loss. You now have better data than the old pass/fail label ever provided.
Key takeaways:
- The mobile-friendly test retired December 1, 2023, along with the Search Console Mobile Usability report.
- PageSpeed Insights and Lighthouse are the official free replacements.
- Core Web Vitals (LCP, INP, CLS) are the new mobile health benchmarks.
- Mobile-first indexing means your mobile pages drive rankings regardless of searcher device.
The transition benefits you: the mobile-friendly test retired december 1 2023 forced publishers toward tools that show why pages underperform, not just whether they pass. Because google mobile-friendly test retired december 1 2023 pushed the industry toward richer diagnostics, that depth turns vague SEO anxiety into a fixable task list.
Your next step: run your five highest-traffic pages through PageSpeed Insights today, log each Core Web Vitals score, and fix your single worst metric first. Small, targeted improvements there compound into real ranking gains over the following months.
