Scan report for online-class.by
5 pages crawled — 6861 words, 93 images and 400 links read straight off the pages and checked for accessibility, performance, SEO, security, forms, links and infrastructure. 57 distinct problems found, counted 173 times across the pages.
Report updated 2026-11-02
Category scores
- Overall
- 82/100
- SEO
- 56/100 · Issues: 27
- Accessibility
- 66/100 · Issues: 35
- Performance
- 81/100 · Issues: 23
- Security
- 17/100 · Issues: 47
- Privacy
- 94/100 · Issues: 10
- HTML validity
- 83/100 · Issues: 16
- Forms
- 100/100 · No issues found
- Links
- 97/100 · Issues: 5
- Console
- 95/100 · Issues: 3
- Infrastructure
- 94/100 · Issues: 1
- Mobile
- 99/100 · Issues: 1
- Images
- 97/100 · Issues: 5
Quick Wins
High-impact, low-effort fixes, ranked by what this scan actually found.
- Add alt text to the images that are missing it — Search engines can index the images and screen-reader users learn what they show.
- Update the copyright year — The footer stops telling everyone the site was abandoned.
- 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.
What the site checks found
- Medium — SEO — Both www.online-class.by and the canonical host serve the site with HTTP 200 — the whole site exists at two addresses.
- Medium — SEO — 2 hreflang alternates name a different canonical, so the listed version is not the one in the index: / → /en/ (en-us), /blog/tipichnie_oshiboki_v_angliyskom/ → /en/blog/tipichnie_oshiboki_v_angliyskom/ (en-us).
- Medium — SEO — The sitemap lists 1 pages that are not meant to be indexed — noindex, an error status or another canonical: /courses/anglijskij-dlya-shkolnikov-ind-60-min/.
- Low — Performance — The HTML is sent with no Cache-Control, Expires, ETag or Last-Modified — every visit re-downloads it in full.
- 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/1.30.6.
- Medium — Security — SPF records published: 2. The standard allows exactly one, and receivers discard all of them.
- 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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