Several endpoints, one visit
Compare two websites side by side
Paste two links and get a screenshot of each with its Lighthouse scores and Core Web Vitals next to the other's — your page against a competitor's, or before against after.
- No signup
- No credit card
- Powered by the URLpipe API
Compare your own URLs
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Pick one of the pages above to get started.
What you get
- A screenshot of each page, as a visitor first sees it
- Both pages' performance, accessibility, best-practices and SEO scores
- LCP, CLS and Total Blocking Time for each, with pass or fail
How it works
- 1Each URL gets its own page visit for the screenshot and its own Lighthouse run, on the default mobile profile.
- 2Both run at the same time, and each side appears as soon as it is ready.
- 3Scores and metrics are laid out in the same order, so the gaps are easy to read.
What people use it for
- Benchmark your landing page against a competitor's
- Check a redesign against the page it replaces
- Show a client where their site stands, with numbers
Frequently asked
Is the comparison fair?
Both pages are audited with the same Lighthouse version and mobile profile, at about the same time, but each with whatever load its own servers had then. Lab scores move a few points from run to run: treat small gaps as noise and large ones as real.
How much of my free demo does a comparison use?
Two runs, one for each page. The example pairs above are free and do not count.
Can I compare more than two pages?
Through the API, yes: one /scrape per URL with the screenshot and lighthouse operations, at 3 credits a page. Repeats within the cache window are free.
Ready to use it in production?
Get a free API key and call every endpoint from your own code — 1,000 credits a month, no credit card.