Ask HN: What do you use to test website performance?

I use Lighthouse and Dareboost as a minimum, and a suite of site specific integration tests that run on Browserstack if it's anything important. I do all my development using eslint and flowtype where appropriate, and I write unit tests for the Javascript logic (usually in Jest as I do React these days). I also use Sonarqube to check the code. I've been tinkering with Stylelint to check and format my SCSS code.

Even with all that in place the QA/QC guy always seems to find problems.

I just found this: https://sonarwhal.com (seems to be unrelated to Sonarqube) ... I thought it might help anyone stumbling on this Q in future.

Always https://developers.google.com/speed/pagespeed/