I needed higher resolution screenshots for an ML model to classify elements on a webpage, but the default Lighthouse screenshot was too compressed. So, I created a custom Lighthouse Gatherer using Puppeteer. This gatherer captures a full-page, high-resolution screenshot encoded as base64 and returns it along with the device pixel ratio. This was a fun little project, and the code is surprisingly concise. However, future Lighthouse versions may include higher-resolution screenshots, making this gatherer redundant.
Hello.
I am Paul Kinlan.
A Developer Advocate for Chrome and the Open Web at Google.
I love the web. The web should allow anyone to access any experience that they need without the need for native install or content walled garden.