SEO Page Inspector

About

SEO Inspector — see everything that matters for SEO on any page, in one click.

Open the popup on any website and instantly get a clean, organized breakdown of the page's on-page SEO — no sign-up, no accounts, no data leaving your browser.

What it does

📋 Summary — Title (with length check), Description, Keywords, Canonical, Robots tag, Author, Publisher, Lang, Charset, plus live counts of H1–H6, images and links. Missing or problematic tags are flagged with color-coded status dots (green / amber / red) so issues jump out immediately.

🏷️ Headers — Every H1–H6 heading in document order, indented by level and color-coded, so you can audit heading structure at a glance.

🖼️ Images — Totals for images without ALT and without TITLE, with thumbnails and per-image flags.

🔗 Links — Two views:
• General — totals, internal vs. external, unique links, nofollow, anchors, empty hrefs, plus an expandable "Issues" list grouping links that are missing a title or have an empty href.
• Link checker — probe every link's HTTP status and highlight redirects (3xx) and errors (404 / 4xx / 5xx). Click any result to jump straight to that link on the page.

📣 Social — Open Graph and Twitter Card tags with image preview, exactly as social networks and messengers will see them.

🌍 hreflang / multilingual — Lists all language alternates and tells you whether an x-default is defined.

🛠️ Tools — Quick links to robots.txt and sitemap.xml, detected JSON-LD structured-data types, and one-click shortcuts to PageSpeed Insights, Rich Results Test, Facebook Debugger and the W3C validator. Includes a Sitemap Validator that fetches your sitemap (and sub-sitemaps) and lists any URLs returning redirects or errors.

🎯 On-page highlighting — Automatically outlines every heading (with its H1–H6 label) and every image missing ALT/TITLE right on the page, with a master toggle to turn it on or off.

🌗 Light & dark theme — Switch instantly; your choice is remembered.

Why you'll like it

One click, instant — full page audit the moment the popup opens.
Private by design — everything runs locally in your browser. No tracking, no analytics, no account.
See problems, not just data — color-coded warnings, on-page highlighting, and grouped issue lists.
Goes further than most — built-in HTTP link checking and sitemap validation, not just meta-tag readouts.
Clean, modern interface — organized tabs, light/dark themes, easy to read.
Free.
Perfect for SEO specialists, developers, content editors and site owners doing quick on-page audits.

Notes for when you paste this in:

The store summary field is separate from the description field — use the short line for summary, the rest for description.
One honest caveat in the copy: redirects are shown as 3xx (not the exact 301 vs 302) — the wording above already reflects that, so it stays accurate.
Want a matching privacy justification blurb for the <all_urls> permission (the review team asks for one) and a single-purpose statement? I can draft those too.