Scan report for biot.by
5 pages crawled — 5169 words, 51 images and 982 links read straight off the pages and checked for accessibility, performance, SEO, security, forms, links and infrastructure. 45 distinct problems found, counted 147 times across the pages.
Report updated 2026-11-02
Category scores
- Overall
- 85/100
- SEO
- 92/100 · Issues: 9
- Accessibility
- 66/100 · Issues: 33
- Performance
- 72/100 · Issues: 24
- Security
- 21/100 · Issues: 49
- Privacy
- 95/100 · Issues: 8
- HTML validity
- 90/100 · Issues: 8
- Forms
- 97/100 · Issues: 5
- Links
- 97/100 · Issues: 5
- Console
- 93/100 · Issues: 4
- Infrastructure
- 100/100 · No issues found
- Mobile
- 99/100 · Issues: 1
- Images
- 99/100 · Issues: 1
Quick Wins
High-impact, low-effort fixes, ranked by what this scan actually found.
- Send a Strict-Transport-Security header — Browsers refuse to fall back to plain HTTP for this domain.
- Give every button an accessible name — Every control announces what it does instead of being read out as a button.
- Send X-Content-Type-Options: nosniff — Browsers stop guessing content types and executing files as scripts.
- Send an X-Frame-Options header — The site cannot be framed for click-jacking.
- Send a Referrer-Policy header — Internal URLs stop leaking to third-party sites.
- Serve every asset over https:// — Browsers stop blocking assets and warning about the padlock.
What the site checks found
- Low — SEO — Pages the crawl found that the sitemap does not list: 1 of 5 — crawlers have to reach them through links alone.
- Low — Performance — The HTML is sent with no Cache-Control, Expires, ETag or Last-Modified — every visit re-downloads it in full.
- Medium — Performance — 18 of 18 static files checked are cached for less than a week, or not at all — returning visitors download them again.
- Low — Performance — The HTML is compressed with gzip but not with Brotli, which every current browser accepts and which is typically 15–20% smaller.
- Low — Security — No /.well-known/security.txt — anyone who finds a vulnerability has to guess where to report it.
- Low — Security — Response headers publish exact software versions: server: nginx/1.30.4, x-powered-by: PHP/7.4.33.
- Medium — Security — No DMARC record at _dmarc — nothing tells receiving servers what to do with mail that fails the SPF check.
- Low — Security — No CAA record — any certificate authority may issue a certificate for this domain.
- Low — Security — The zone is not signed with DNSSEC, so a forged DNS answer cannot be detected.
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