A critical defect caps a site's grade at D — the score can't go above 45 while it remains.
Where the faults are
Score by category out of 100 — 100 means no defects found (clean), 0 means severely broken.
Score trend
Daily score — taller bars are better; a falling 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.
Page is blocked from search engine indexing
1 broken link in primary navigation
1 Chrome DevTools issue logged
Sunset vendor script still loading: Optimizely Classic
Page weight is excessive (Total size was 2,897 KiB)
Missing or invalid source maps
🔒 1 security finding withheld from the public board. We don't publish per-brand security detail where attackers can read it — request the full report below.
Get the full report
The complete report — including security findings and the evidence behind every defect — is free for the people who run M&S. To keep that detail away from trolls and attackers, we only send it to addresses at the brand's own domain (@marksandspencer.com). Other addresses are reviewed by a human first.