the home page of each site, a cold view
each internal page, the first view of it in a visit
leave-one-out over the internal pages
pages the guard let through that link a trimmed file, Oracle A on them
Oracle B: pixels that differ from the original CSS, and the same page against itself
pages where the trimmed arm differed by more pixels than the control did
pages whose second screenshot of the original equals the first to the pixel
pages whose trimmed screenshot equals the original to the pixel
pages where the trimmed arm differed and the control did not
Oracle A: used rules the trimmed text lost
the share of the site's stylesheet bytes (brotli 5) the trim removes
what the trimmed experiment measured, per site and pooled