SEO Browser Extensions
SEOquake: what it does, what it costs
Semrush's free SERP and on-page overlay, and one of the oldest tools still running.
SEOquake at a glance
Every row is a verified field or an honest absence. A row is dropped rather than filled with an em dash, so the length of this table says how complete the record is.
| What it is | Semrush's free SERP and on-page overlay, and one of the oldest tools still running. |
|---|---|
| Category | SEO Browser Extensions |
| Best suited for | Quick on-page and SERP assessment at no cost |
| Starting price | Free |
| Free plan | Yes |
| Free trial | None offered |
| Main strength | Genuinely free with no paid tier and no account needed for core use |
| Main limitation | Chrome only in its current listing |
| Evidence | Primary-source researched |
| Closest alternatives | Detailed SEO Extension, MozBar, Keywords Everywhere, Semrush |
| Pricing checked | 20 August 2026 |
| Record checked | 20 August 2026 |
What SEOquake is
SEOquake has been doing the same job since long before most of this directory existed: put SEO data on top of whatever page you are looking at. Quick View gives a compact snapshot of the page; Full Report opens a deeper analysis in its own tab. On a search results page it annotates the results themselves, which is the use most people install it for.
It is free, with about a million users, and it is owned by Semrush — which is what explains both its metrics and its longevity. Core reports and Semrush's built-in metrics work with no account at all. Connecting a Semrush account adds referring domains, referring IPs, deeper backlink analysis and Traffic Analytics where your account covers it. So the free ceiling is genuinely useful and the upgrade path is a platform you might already pay for.
One thing to know before you go looking for it: seoquake.com no longer describes the product. That domain now serves a Backlinko-branded "Free SEO Checker" landing page — Backlinko being another Semrush property — so the Chrome Web Store listing is where the current product description actually lives. The extension itself is unaffected and still carries its own name.
What you can use it for
- Get a compact on-page SEO snapshot of any page without leaving it
- Annotate search results with SEO metrics while assessing a SERP
- Run a fuller page report in its own tab when the snapshot is not enough
- Add backlink and traffic depth by connecting an existing Semrush account
The features that matter for SEO
Each one says what it does and the SEO job it serves. A vendor feature list without that second half tells you nothing you could not read on their own site.
Quick View snapshot
Shows a compact set of on-page SEO signals for the page you are on.
The fastest possible answer to "what is this page doing" — enough for a triage pass before deciding whether the page deserves a real audit.
Full Report
Opens a deeper page analysis in a new tab.
Bridges the gap between an overlay and a crawler, without the setup either a crawler or a platform project needs.
SERP overlay
Annotates search results with SEO metrics.
Assessing a whole results page at once is the competitive question that matters before committing to a keyword, and doing it in place beats checking domains one by one.
Built-in Semrush metrics without an account
Provides Semrush's own metrics with no login required.
Unusual — most vendor extensions gate their metrics behind a free account at minimum, and this one does not.
Semrush account integration
Adds referring domains, referring IPs, deeper backlink analysis and Traffic Analytics when the connected account covers them.
Turns the extension into a front end for a subscription you may already have, rather than a separate purchase.
Traffic Analytics availability depends on your Semrush plan, not on the extension.
No data collection
The developer declares in the Chrome Web Store that it does not collect or use user data.
Worth checking for any extension with permission to read every page you visit, and this one's declaration is explicit.
Pricing and limits
Starting price: Free Checked 20 August 2026 Vendor’s own pricing page
| Plan | Price | What it includes |
|---|---|---|
| Free | Free | There is no paid tier of SEOquake. The upgrade path is a Semrush subscription, which unlocks additional data inside the extension rather than an extension licence.
|
Strengths and limitations
Strengths
- Genuinely free with no paid tier and no account needed for core use
- Semrush's own metrics available without logging in
- Around a million users and nearly two decades of continuous availability
- Scales up through a Semrush subscription instead of an extension upgrade
- Explicit no-data-collection declaration from the developer
Limitations
- Chrome only in its current listing
- Its own domain, seoquake.com, now serves an unrelated Backlinko landing page
- The deeper backlink and traffic data needs a Semrush subscription
- Page-at-a-time, so no crawling or site-wide view
- Thinner on technical detail than purpose-built on-page inspectors
Who it is for, and who should skip it
Worth it if
- Quick on-page and SERP assessment at no cost
- Existing Semrush subscribers, who get the extra data free
- Anyone wanting vendor-grade metrics without creating an account
Skip it if
- You need site-wide crawling or historical data
- You use Firefox
- You want the deepest technical on-page diagnostics available
Alternatives to SEOquake
Each one answers when it is the better choice, which is the only thing a list of competitors is useful for.
- Detailed SEO Extension Choose it when you want deeper technical on-page inspection, including HTTP-level robots directives.
- MozBar Choose it when you want Domain and Page Authority specifically as your comparison metric.
- Keywords Everywhere Choose it when you want search volumes in the browser rather than on-page diagnostics.
- Semrush Choose it when you want the platform whose metrics this extension surfaces.
Sources and verification
Last verified 20 August 2026 0 days ago
Pricing 20 August 2026 Plans 20 August 2026 Features 20 August 2026
- SEOquake on the Chrome Web Store Official site verifies pricing, plans, features, company checked 20 August 2026
What changed
- 20 August 2026 — Listed against its Chrome Web Store page rather than seoquake.com, because that domain now serves a Backlinko-branded "Free SEO Checker" page instead of describing SEOquake. The extension is unchanged and still carries its own name, so it is listed under it.
Questions
Is SEOquake still available?
Yes. The Chrome extension is live, free, published by Semrush and listed at around a million users. What has changed is its website — seoquake.com now serves a Backlinko-branded SEO checker page, so the Chrome Web Store listing is the current source of truth for the product.
Do I need a Semrush account to use it?
No. Core reports and the built-in Semrush metrics work without one. An account adds referring domains, referring IPs, deeper backlink analysis and Traffic Analytics where your plan covers it.
SEOquake or the Detailed SEO Extension?
SEOquake for metrics — page and SERP-level numbers from Semrush's index. Detailed for diagnostics — headings, schema, hreflang and HTTP robots directives. Both are free, so the practical answer is both, used for different questions.