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Your site vs. the competition.
Two sites, same test, same moment. See who loads first on mobile — and exactly where the difference comes from.
How it works
Straight from the source.
Every result comes live from a recognised public source — named under your results, so you can check our work.
- 1Same test, same momentBoth sites are tested in Google's mobile lab at the same time.
- 2Like for likeThe same Core Web Vitals, weight and response measures, side by side.
- 3See the gapThe winner of each measure is marked, so you know exactly where to focus.
Private by design
No accounts, no cookies, no tracking. NuuMa doesn't store what you check. To run the tests, the address you enter goes directly from your browser to the public services named above. The only thing kept is a small daily counter in your own browser that keeps these tools free for everyone.
Questions, answered plainly
Is the comparison fair?
Both pages run through the identical Google lab test at the same moment, and both are timed from your browser. Real-visitor data is shown separately where Google has it.
Which measure matters most?
Largest Contentful Paint — when the main content appears — is the clearest sign of which site feels faster to a visitor.
Does a comparison use more of my free checks?
Yes. A comparison tests two sites, so it counts as two checks.
More free tools
Keep checking.
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