SEOSniper

Check, preview-edit and share a page's SEO basics — title, description, headings, images — in plain language.

Is this page OK for SEO? SEOSniper answers in plain language — no technical knowledge needed. Click the icon (or press Alt+H) and an SEO panel opens on top of the page. Built for designers, directors, marketers and clients, not just engineers: instead of raw numbers, it tells you what they mean, e.g. "A bit long — search results may cut it off". ■ Basic - Check results at a glance (❌ fix / ⚠️ caution / ℹ️ info) - Can the page appear in search results? (noindex, robots.txt) - Title and description length with guidance, one-click Google search - Canonical, HTTPS and mixed content - SSL certificate issuer and expiry (looked up only when you press the button) - How the page looks when shared on Facebook, LINE and X - Analytics tags (Google Analytics, Tag Manager, Clarity) - Structured data, published/updated dates, robots.txt, sitemap.xml ■ Headings - H1–H6 outline like a table of contents - Flags missing or multiple H1s, skipped levels, empty and image-only headings - Click to highlight a heading on the page ■ Edit (preview) - Rewrite the title, description, headings and image alt text right on the page - Live search result preview - "Copy" turns your edits into a before/after proposal you can send * Changes are only in your browser — the real site is not modified, and reloading restores it. ■ Images - Real file size, actual vs displayed size, alt text - Flags heavy images and images much larger than they're displayed - Filter by "missing alt" or "over 200KB" ■ Stats - Technology guess with evidence (CMS, language, framework, plugins, web fonts) - Page weight (images, CSS, JavaScript), links and HTML complexity ■ Shareable copy Every tab has a Copy button that produces text ready to paste into chat or email. ■ Works on any site The panel is isolated from the page, so site styles can't break it and it doesn't affect the site. ■ Privacy All analysis happens in your browser. Nothing is sent to the developer. Only when you press the SSL certificate button is the domain name looked up in the public crt.sh database. Part of the Sniper series (SizeSniper and more). Support & feedback: https://support.tarp.tokyo