Uper SEO Auditor

SEO Pulse SEO Extension

One-click SEO audits — indexability, meta tags, schema, Core Web Vitals, redirects, robots.txt, sitemaps, and more. SEO Pulse is a powerful, one-click SEO audit extension for Chrome. Click the icon on any page and get 125+ instant checks across indexability, structured data, server health, JavaScript rendering, redirects, hreflang, Core Web Vitals, and more — no account needed, no data sent to servers, everything runs locally in your browser. Updated May 2026 — Now with page type detection, AI bot access controls, scripts & tracking detection, live Google Search Status, and a prioritised issues list with plain-English fix suggestions and direct links to the relevant audit panel. The extension icon changes color the moment you land on a page: 🟡 Yellow = Actively running checks 🟢 Green = All good 🟠 Orange = Worth checking 🔴 Red = Critical issue (noindex / robots.txt block) 🏆 WHY SEO PULSE IS DIFFERENT Most Chrome SEO extensions read what the browser already loaded and call it a day. SEO Pulse goes further — and does things no other free extension does. → It fetches your raw HTML independently and compares it against what JavaScript rendered — so you know exactly what search engines crawl, not just what users see. Every title, description, canonical, H1, schema block, and hreflang tag gets labelled SSR or JS inline, with no extra clicks. → It probes your server with live HTTP requests to check 404 handling, www redirect consistency, trailing slash behaviour, HTTPS enforcement, and URL case sensitivity. These are the technical issues that silently tank rankings for months before anyone notices. → It automatically detects the page type — Product, Category, Blog Post, Homepage, Transactional — and surfaces issues that are only relevant to that type. A Shopify category page gets different checks than a blog post. A checkout page being indexable gets flagged as critical, not just a warning. → It shows you which AI crawlers and search bots can access your content — with a visual grid of 20 bots, what each one does, and what blocking it actually means for your site. → Everything runs locally in your browser. No sending URLs to a third-party server. No API keys. No subscriptions. No waiting for a dashboard to load. You land on a page, the icon pulses, and within seconds you have a complete picture. Other SEO extensions were built to check a few tags. SEO Pulse was built to answer the question search engines actually ask: "Can I crawl this, understand it, and rank it?" Every problem found across all 125+ checks surfaces here, ranked by severity — Critical, Warning, and Info. No more tab-hopping to find what's wrong. Each issue includes a plain-English description of why it matters, a concrete fix suggestion, and a direct link to the relevant tab for deeper investigation. A live badge on the Issues tab updates in real time as server probes complete — so your total count is always accurate even before all checks finish. Issues are grouped by category (Indexability, Canonical, Title, Images, Links, Schema, Hreflang, Server, Sitemap, Security, and more) and filterable by severity or category. New: issues are grouped by detected page type. A product page gets product-specific checks. A blog post gets content and schema checks specific to articles. A low-confidence detection shows you exactly what signals were used so you can verify before acting. Export the full issues list as a standalone HTML report — sorted by severity, with all fix suggestions included — ready to share with clients or drop into a ticket. Noindex detection via both meta robots tag and X-Robots-Tag response header — with icon colour feedback before you even open the popup. Canonical URL analysis covering self-referencing, missing, pointing to a different URL, multiple canonicals on one page, and canonicals declared outside the head. Multiple title tag detection with a breakdown of how many appear in the head vs body. X-Robots-Tag fetched via GET request, not HEAD — catches headers that WordPress and CDN configurations return inconsistently. This is one of SEO Pulse's most powerful and genuinely unique features. When JavaScript injects your title, description, canonical tag, schema, or hreflang after page load, search engines may never see it — they don't always execute JavaScript on every crawl pass. SEO Pulse fetches the raw HTML independently and checks every critical signal against both the rendered DOM and the server response. Every title tag, meta description, canonical, H1, schema block, and hreflang tag gets an SSR or JS badge — shown inline next to the field name, no extra clicks required. Hover any badge for a plain-English explanation of what it means for indexing. Nine encoding strategies handle edge cases: URL-encoded characters, HTML entities, plus-encoded spaces, and mixed encoding patterns used by frameworks like Next.js and Nuxt. No other free Chrome SEO extension does this. Full robots.txt parser with live syntax highlighting, rule-by-rule breakdown, and an interactive URL tester — enter any path and see exactly which rules apply and why. X-Robots-Tag header detection included. New in 2026: a visual access grid shows the robots.txt status for 20 major crawlers at a glance. Each bot shows ✓ allowed or ✗ blocked for the current page URL, with a tooltip explaining what the bot does and what blocking it means for your site: Blocking Google-Extended opts your content out of Gemini training without affecting Google Search. Blocking GPTBot stops OpenAI training but not ChatGPT's live browsing. SEO Pulse explains each distinction so you can make informed decisions rather than guessing. 📊 PAGE TYPE DETECTION SEO Pulse automatically detects what kind of page you're auditing using schema.org type signals, CMS body classes, URL patterns, and DOM structure. Detection is confidence-scored — High, Medium, or Low — and the signals used are shown so you can verify it got it right. Detected page types and their specific checks: Product pages — missing Product schema, missing BreadcrumbList, variant URL canonicalisation issues, internal links using /collections/all/ instead of a specific collection path (Shopify), tracking parameters in internal product links Category pages — products linked through /collections/all/ (wastes crawl budget on large stores), filtered or paginated URLs in internal links, missing CollectionPage schema, H1 not matching the category name Blog posts — missing Article or BlogPosting schema, schema missing datePublished or author, zero internal links (missed link equity distribution), missing og:image Homepages — missing Organization schema, missing WebSite schema with SearchAction Transactional pages — checkout and thank-you pages that are indexable flagged as critical, pages found in sitemap that should not be CMS is detected and shown alongside the page type. One toggle in Settings disables page type checks entirely if needed. See every analytics and marketing tool loaded on any page without opening DevTools or the Network tab. Shows total scripts, third-party count, render-blocking scripts, and distinct third-party domains. GA4 and GTM IDs are extracted from the script and copyable with one click. Render-blocking scripts are flagged in the Issues tab. A live status panel sits at the bottom of the Issues tab, pulling data directly from Google's status API every time you run an audit. Two cards show at a glance: Latest Ranking Update — the actual update name (e.g. "March 2026 core update"), the date it started, how long it ran, and whether the rollout is complete or still in progress. Useful context when rankings have shifted and you need to know if a core update is active. System Status — All systems operational when everything is clear, or the name, service, and start date of any active indexing disruption or serving issue. Five live server probes run automatically on every page. Each makes a real HTTP request and shows the exact URL tested and the server's response. 404 Handling — requests a non-existent URL and checks whether the server correctly returns 404. Servers returning 200 for missing pages waste crawl budget and get junk URLs indexed. www vs non-www — checks whether both versions redirect to one canonical. Duplicate root domains split link equity and create two separate indexable homepages. Trailing Slash — tests whether /page and /page/ both return 200. If they do, you have two indexable versions of every URL, each accumulating separate signals. HTTP → HTTPS — verifies your server issues a permanent 301 redirect rather than a temporary 302. A 302 tells search engines the insecure version might return, so they keep it indexed. Case Sensitivity — sends a request with an uppercase path and checks if your server returns the same content. On Linux servers, /About and /about are different URLs — both can be indexed independently. A real-time redirect count badge appears on the extension icon as the page loads. Open the extension to see the full path: every hop with its HTTP status code (301, 302, 307, meta refresh). Chains longer than two hops are flagged — each additional hop loses PageRank and adds latency that compounds across thousands of pages. JSON-LD, Microdata, and RDFa detection — all three formats, each searched correctly using the right HTML attributes. JSON-LD uses @type matching in script tags. Microdata uses itemtype attributes. RDFa uses typeof — not a one-size-fits-all pattern. Schema type identification with full markup viewer, validation with errors and warnings, and SSR vs JS detection per block — critical for sites that inject schema via tag managers or client-side JavaScript. Copy and export individual schema blocks. Full hreflang tag detection and validation. Reciprocal return link verification — checks whether alternate pages reference back correctly. Language and region tag mapping across all declared alternates. HTTP status check per hreflang URL. SSR vs JS badge per tag — essential for international sites where hreflang is often injected client-side and never seen by crawlers. Internal and external link counts with full filterable lists and anchor text. Nofollow and JavaScript-only link detection. WWW inconsistency detection — internal links mixing www and non-www flagged with the specific offending URLs. HTTP links on HTTPS pages surfaced with real examples. Image alt text audit covering missing, empty, and present counts. Lazy loading detection. Missing width and height attributes flagged for CLS impact. 📋 ON-PAGE SEO AUDIT Title tag with character count, length validation, and multiple title detection. Meta description with character count. H1–H6 heading hierarchy visualised as a full tree — gaps, skipped levels, and missing H1s all flagged. Word count and estimated reading time. Open Graph tag detection — missing required tags trigger the orange warning icon before you open the popup. Twitter Card tag detection. Language and charset. Viewport meta tag validation. LCP, FCP, CLS, TTFB, and INP displayed in one panel with performance context. One-click links to PageSpeed Insights for lab data and CrUX Vis for real-user field data broken down by URL. See exactly how your page appears in Google search results — title, URL, and meta description rendered as a live preview. Click to edit the title or description directly in the extension. Live character counts update as you type so you can dial in the optimal snippet length without switching tools. Automatic sitemap detection from robots.txt and common paths. Full recursive sitemap index support — handles sitemaps nested up to three levels deep, including cross-domain sitemap indexes used by large enterprise sites. Download all discovered URLs as CSV in one click. Filter by path segment. Collapsible tree view of your entire site architecture. llms.txt detection checks whether the site has published an AI content permissions file. 🛠️ QUICK TOOLS — ON-PAGE OVERLAYS Six tools that work directly on the live page: JavaScript toggle — disable JS for the current domain and reload to see the no-JS version instantly JS Compare — side-by-side panel showing raw server HTML alongside the rendered DOM, so you can spot content, headings, schema, and links that exist in one version but not the other Highlight headings — color-coded H1–H6 overlays on every heading element across the live page Show full link URLs — the full destination URL appears above every link, making internal link audits easy without touching the source Edit Page — makes all text directly editable for client mockups or before/after screenshots Keyword density — enter any keyword and see occurrences broken down by title, meta description, H1, H2s, and body text Right-click any page or link to highlight links by type (internal, external, nofollow), check whether the page is indexed in Google, or open it directly in Semrush or Ahrefs. Generate a complete standalone HTML report covering all 125+ audit results — indexability, on-page, schema, hreflang, server health, redirect chain, Core Web Vitals, SERP preview, heading structure, page type detection, scripts & tracking, Open Graph, Twitter Cards, and more. No login, no upload, no account required. Dark mode. Four font options. Background theme selection. Vertical sidebar or horizontal tab layout. Issues tab can be set as the default view on open. 💡 BUILT FOR REAL SEO WORK Whether you're doing a technical audit for a client, debugging why a page isn't getting crawled, checking if a competitor's schema is server-rendered, verifying that a JavaScript framework isn't hiding your hreflang from Google, or trying to understand why a page dropped after a core update — SEO Pulse gives you answers in seconds, not minutes. It's fast because everything runs locally. It's accurate because it checks the raw HTML, not just what the browser already rendered. And it's honest — if a check can't be determined, it shows nothing rather than displaying a badge that might be wrong. All analysis runs entirely in your browser. No data is sent to external servers. No account required. Your URLs, page content, and audit results never leave your machine. Built for SEO professionals, technical SEOs, developers, content creators, and anyone who needs to understand how search engines see their pages.

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