A tool that scans every page of a website with Google PageSpeed Insights and turns the results into one short, ranked report of what to fix first, instead of a separate score per page.

No. 436.io is an independent, unofficial tool built on top of the public PageSpeed Insights API. "PageSpeed Insights" and "Lighthouse" are trademarks of Google LLC. Any score or status shown in a report is computed by 436.io from that data, not an official Google rating.

No. 436.io runs on a shared server key with its own rate limits, so you can scan a site without creating a Google Cloud project or pasting a key into a form.

Yes. Running a scan requires signing in with Google, which is how we identify who is running it. It only takes a moment, and being signed in doesn't change anything about how scans work or what happens to your results.

Yes, it's free. To keep the shared PageSpeed Insights key available for everyone, each scan checks up to 30 pages and each account gets 3 scans per day. If a scan is refused because of a limit, it explains why and when you can try again.

The Actionable Report is the default view after a scan: a website-level summary plus the handful of recurring problems worth fixing first, each with impact, effort and how many pages it affects. Detailed Results is the full page-by-page breakdown underneath it, for when you need to dig into one specific URL.

Each finding is scored from its impact, how many pages it affects, whether it touches a Core Web Vital and how much effort it typically takes to fix. A high-impact, low-effort problem affecting most of the site will usually outrank a smaller problem that is expensive to fix, even if fewer pages are involved. The same scan data always produces the same ranking.

Scanning a website URL is the quickest option: 436.io looks for /sitemap.xml and any sitemap listed in robots.txt automatically. Upload a sitemap directly if the site does not expose one publicly or if you already have the exact file you want scanned.

The report is built only from pages that completed successfully and it says so plainly, for example "120 pages analyzed, 7 failed". Failed pages are listed separately rather than silently left out of the page counts.

Yes. Each completed scan's report is saved to your account, so it shows up in your scan history, where you can download it as a PDF or delete it at any time. A scan you cancel partway through isn't saved.

Yes. Scanning the same site again shows what's new, what's resolved and how each category's score moved since last time. Your account dashboard also shows an overall health score, a category breakdown and a score trend across all your scans, filterable by site and time range.

Sitemap parsing handles sitemap indexes with many child sitemaps and scans run through a small concurrent queue so large sites do not overwhelm the API or this service. On the Free plan each scan checks up to 30 pages; the preview before scanning tells you if a site had more than that.