Scan report for sumida.by
5 pages crawled — 2039 words, 97 images and 146 links read straight off the pages and checked for accessibility, performance, SEO, security, forms, links and infrastructure. 52 distinct problems found, counted 143 times across the pages.
Report updated 2026-10-26
Category scores
- Overall
- 84/100
- SEO
- 42/100 · Issues: 35
- Accessibility
- 87/100 · Issues: 16
- Performance
- 77/100 · Issues: 25
- Security
- 33/100 · Issues: 40
- Privacy
- 85/100 · Issues: 7
- HTML validity
- 97/100 · Issues: 5
- Forms
- 100/100 · No issues found
- Links
- 96/100 · Issues: 6
- Console
- 96/100 · Issues: 2
- Infrastructure
- 100/100 · No issues found
- Mobile
- 98/100 · Issues: 2
- Images
- 91/100 · Issues: 5
Quick Wins
High-impact, low-effort fixes, ranked by what this scan actually found.
- Stop robots.txt from disallowing the whole site — Search engines are allowed to read the site at all.
- Send a Strict-Transport-Security header — Browsers refuse to fall back to plain HTTP for this domain.
- Load the first image eagerly — The largest image starts downloading with the page instead of after it.
- Add an H1 heading — Both readers and crawlers get a clear statement of what the page is about.
- Turn on gzip or brotli compression for HTML — HTML transfers shrink by roughly 70%, cutting load time on every visit.
- Set font-display: swap on the web fonts — Text is readable in a fallback face from the first paint instead of being hidden.
What the site checks found
- Critical — SEO — robots.txt disallows crawling of the home page — search engines are shut out of the site.
- Low — SEO — robots.txt has no Sitemap: line — crawlers have to guess where the sitemap is.
- Low — Performance — The HTML is sent with no Cache-Control, Expires, ETag or Last-Modified — every visit re-downloads it in full.
- Low — Security — No /.well-known/security.txt — anyone who finds a vulnerability has to guess where to report it.
- 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.
- Low — Privacy — The site loads Google Analytics with no consent layer anywhere in the markup — under the GDPR and the ePrivacy Directive those tags need consent before they run.
- Medium — Privacy — None of the scanned pages links a privacy policy (missing: privacy, terms, imprint).
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