Bulk page speed test for up to 5 URLs
Starter covers 25 URLs for $19 a month.
Paste up to five URLs and run them together. You get one table with lab performance score, LCP, CLS and Total Blocking Time for each, plus a field data pass or fail where the Chrome UX Report has data. It is the fastest way to see which of your templates is dragging the site down, or how your page compares with a competitor's.
Good ways to use five slots
Compare your templates
Test one URL from each page type: home, category, product, article and checkout. Templates share code, so a slow product page usually means every product page is slow. Fixing one template can fix thousands of URLs.
Compare before and after
Test the live page and a staging or preview URL side by side, as long as both are public. You will see whether a change helps before you ship it.
Compare with competitors
Put your key page next to the equivalent page from four competitors. If everyone is slow, speed may be a chance to stand out. If everyone else is fast, you have work to do.
Compare locales or variants
Test the same page in different languages or regional sites. Localized versions often pick up heavier images or extra scripts.
Reading the table
Performance score. A weighted summary of lab metrics on a 0 to 100 scale. Useful for quick comparison, but it is not a Core Web Vitals pass or fail.
LCP. When the main content appears. Under 2.5 seconds is good.
CLS. How much the layout jumps. Under 0.1 is good.
TBT. How long the main thread was blocked during load. It is a lab stand-in for responsiveness and tends to move with INP.
Field result. Whether real Chrome users pass Core Web Vitals on this page or origin. This is the one that reflects what Google sees for search.
Getting fair results
Lab results vary from run to run. To compare fairly:
- Run the test twice and look for consistent differences, not small gaps.
- Compare the same device type, mobile with mobile.
- Remember that pages with cookie walls or region redirects may behave differently for our test location.
- Do not compare a logged-in experience with a public one; we only test public pages.
What usually separates fast and slow pages
When one URL in the table is much slower than the others, look first at:
- Page weight. A heavy image or video on that page.
- Third-party scripts. A chat widget, review app or video embed only on that template.
- Server response time. Uncached pages, such as search results or filtered categories.
- Client-side rendering. Pages built in the browser instead of on the server.
From one-off test to monitoring
A bulk test tells you where you are today. It does not tell you when things change. Vitals Clock runs these checks every day, takes the median of three runs to smooth out noise, and alerts you when a page regresses. Pro also lets you watch competitor URLs on the same charts as your own.
Questions
Why only five URLs?
The free tool uses shared API capacity. Five keeps it fast for everyone. Monitoring plans cover 3 to 300 URLs.
Can I export the results?
Copy the table into a spreadsheet. Pro plans include PDF reports for monitored URLs.