Slow pages
sink approved ads.
Test the landing page behind your ad across desktop and mobile, under real-world network conditions, and see the speed and performance issues that can hurt post-click experience and campaign performance.
How it works
Step 1Paste a URL
Drop in the page your ad points to. Pick desktop, mobile or both, and the network to test on. No script, no tag, no setup.
Step 2We run the pass
A real browser loads the page under the conditions you chose. Timings, weight, Lighthouse and a screenshot come back in one report.
Step 3Get the grade
A letter grade, every metric against its threshold, and the file types that cost you the most. Fix, re-test, compare.
What the test measures
See timing, page-weight and Lighthouse metrics in one report, with an overall grade. Test desktop, mobile or both, with 3G, 4G or no throttling.
Loading
Time to First Byte, First Contentful Paint, Largest Contentful Paint and Speed Index: when the server answers, when the visitor sees something, when the main content lands.
Interactivity and stability
Time to Interactive and First Input Delay for when taps start working, Cumulative Layout Shift for how much the page jumps while it loads.
Weight
Total page size, request count and a breakdown by scripts, styles, images, fonts, documents and media, so you see which kind of file slows you down.
Lighthouse scores
Performance, Accessibility, Best Practices and SEO on the 0 to 100 scale Google's own tooling uses, plus one letter grade for the page.
Device and network
Desktop, mobile or both, on a 3G, 4G or unthrottled connection. Most paid social traffic lands on a phone on a mobile network.
Screenshots and history
A screenshot of what loaded, every scan saved, and a one-click re-test after you fix something.
Platforms care about the landing page too.
An approved creative can still underperform when the landing page is slow or unstable. Each platform says so in its own words.
Google: landing page experience matters
Landing page experience is one of the components Google uses when evaluating ad quality. A slow or difficult destination can create friction after the click, so use the test to find performance issues before they cost conversions.
Google Ads Help: Quality Score, Destination requirements
Meta: reduce post-click drop-off
Page speed matters after the click. A slow destination can increase drop-off before visitors have a chance to convert, so test the experience under mobile network conditions.
Meta Business Help: Ad relevance diagnostics
TikTok: protect the post-click experience
A slow or poor landing page can create a weak post-click experience and may affect campaign delivery or performance. Test mobile conditions before launch.
TikTok Advertising Policies, Aug 2025
Microsoft Advertising: landing page experience matters
Landing page experience is part of Microsoft Advertising quality assessment. Use the test to catch slow loads and technical friction before they affect the user experience.
Microsoft Advertising: Quality score in depth
Why small speed gains matter
retail conversions from a 0.1 s faster mobile load, and +9.2% order value
Google / Deloitte, 37 brands, 30M sessions, 2020better e-commerce conversion at 1 s than at 5 s
Portent, 100M page views, 2022of mobile visitors leave a page that takes over 3 s
Google 2016, Akamai 2017Google's definition of "fast" is Core Web Vitals: Largest Contentful Paint under 2.5 s, Interaction to Next Paint under 200 ms and Cumulative Layout Shift under 0.1, at the 75th percentile of visits.
Your page should load before doubt does.
Test the page behind your ad on desktop and mobile, with the timings and Lighthouse scores the platforms grade it on. 7 days free on any plan.
Test your page free