A critical defect caps a site's grade at D — the index can't go below 55 while it remains.
Where the faults are
Fault severity by category — 0 means no defects found (clean), 100 means severely broken. These are damage meters, not marks out of 100.
Fault index trend
Daily fault index — lower bars are better; a rising trend means something shipped and broke.
Defects
Everything found on the latest scan, worst first. Evidence receipts and security findings are reserved for the full report.
3 broken links in primary navigation
2 images missing alt text
6 JavaScript errors in the browser console on page load
1 deprecated browser API in use
1 link are not crawlable
Page weight is excessive (Total size was 15,576 KiB)
Missing or invalid source maps
Get the full report
The complete report — including security findings and the evidence behind every defect — is free for the people who run Serta. To keep that detail away from trolls and attackers, we only send it to addresses at the brand's own domain (@www.serta.com). Other addresses are reviewed by a human first.