// changelog
What changed in the SEO audit.
Every version of the scanner that audits the sites, newest first. Version 1.2.1 is live today: we add checks as we build them.
v1.2.1
current- Puppeteer, the program that drives the browser during the audit, goes from version 25.7.0 to 25.16.0, with fixes for blocked requests, processes that did not close and dropped connections. Scores stay compatible with those of version 1.2.0.
- The audit also reads which contact channels (phone, email, messaging apps, social profiles, review listings) and which forms the homepage shows, on desktop and on mobile.
v1.2.0
- The audit checks the ARD (Agentic Resource Discovery) manifest, the file that lists the resources a site offers to AI agents, with the same conformance test Lighthouse ships: it counts in the AI Crawlability Score from rules 2.0.0.
- Lighthouse no longer runs its Agentic Browsing checks, which repeated the llms.txt and ARD manifest requests on every run: the scanner checks them once per site, with 3 fewer requests per run. Lighthouse scores do not change, because those checks ran after the measuring.
v1.1.0
- Calibration on PageSpeed Insights matches Total Blocking Time, no longer the score: before, our blocking time was 4 to 5 times PageSpeed's, and a page's score could sit more than 10 points from its own.
- Lighthouse 13.5.0, the same version as PageSpeed Insights.
- Audits run two at a time, and the estimated wait depends on the queue alone.
v1.0.0
- Lighthouse runs on reserved cores, apart from the rest of the scan: before, it shared the CPU with other sites being audited, and the same site could move 10 points from one audit to the next.
- The homepage is measured in rounds of 3 runs, up to 9, and the report shows the median run, taken whole, instead of the average: one slowed down run no longer moves every figure.
- Every machine that measures is calibrated on PageSpeed Insights, instead of a fixed 1.2x slowdown, and runs made while the CPU was under load are set aside.
before v1.0.0
- Lighthouse measures the homepage 3 times and the report shows the average, with the single runs, using PageSpeed Insights' CPU slowdown (1.2x): scores now compare with PageSpeed's.
- Speed Index and Total Blocking Time as Lighthouse measures them, in the Performance breakdown and in the comparison with cities: before, the blocking time was an estimate.
- Sites behind a bot protection (SiteGround, Cloudflare and the like) are tried again in the browser, and many can now be audited.
- The scan browses in Italian: multilingual sites are audited in their Italian version.
- The audits of the same site, under the report, on a timeline with their scores.
before v1.0.0
- First public version: free SEO audit of the homepage, up to 4 different websites an hour, no sign up.
- Homepage SEO checks: title, meta description, canonical, structured data, Open Graph and headings.
- Domain and server checks: HTTPS, HTTP to HTTPS redirect, www consistency, HTTP errors and soft 404s, the server's IP on spam blocklists.
- robots.txt, XML sitemap and llms.txt.
- Lighthouse scores and Core Web Vitals of the homepage (LCP, FCP, TTFB, CLS), measured on a mid range phone.
- AI Crawlability Score: how ready the site is to be read and cited by AI assistants.
- Comparison with the business websites of a scanned city, or the national average.
- Every audit on its own page, with its date and time, linked to the earlier and later audits of the same site.