SellSEO
Website Speed Test
Scores
Performance, SEO, accessibility and best practices out of 100, for mobile and desktop.
Core Web Vitals
Largest Contentful Paint, Cumulative Layout Shift and Interaction to Next Paint, from real visitors where there are enough.
Opportunities
The changes ranked by how much time they would save, with the estimated saving.
What to do with it
- Mobile is the score that matters; most searches happen on phones.
- Field data (real users) counts for rankings; lab data tells you why.
- The first two opportunities usually give most of the gain.
When one page is not enough
These tools check one thing at a time. The free SEO audit crawls a whole site and emails a report with the findings in priority order, and the paid plans turn that report into a proposal with the money at stake.
Usually run next
Paste a page address. In about ten seconds you get a score out of 100, what is holding the page back, and what to cha...
Open the tool Domain and server toolsIs It DownEnter a website. We request it from our server and show the status, the response time and where it redirects.
Open the tool Website checksBroken Link CheckerPaste a page address. Up to 150 links are checked and the broken and redirected ones are listed with their status.
Open the tool Website checksMeta Tag AnalyzerPaste a page address. Title, description, robots, canonical, social tags, hreflang, viewport and headings, each marke...
Open the toolAbout the website speed test
Is this the same as PageSpeed Insights?
It runs the same Lighthouse test and shows the same metrics, both strategies at once, kept for a day.
Why is mobile so much slower?
The mobile test throttles the network and the CPU to a mid-range phone on 4G, which is what much of the world uses.
What is a good score?
Above 90 is fast. 50 to 89 is average. Below 50 is slow and usually image weight, scripts or hosting.