Who is SEO Checker for?

SEO Checker is a B2B product built for website owners, marketers, and SEO professionals.

Does SEO Checker have a free plan?

Yes — there is a free tier, with paid plans for advanced use.

What platforms does SEO Checker run on?

SEO Checker runs on the web and embeddable surfaces.

Is SEO Checker still maintained?

Unverified. SEO Checker has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to SEO Checker?

Similar projects tracked by PulseGate include SEOCheckr, SEO Health Checker Extension, and SEO Checker.

Who makes SEO Checker?

SEO Checker is developed by Backlinko.

When did SEO Checker launch?

SEO Checker first shipped in 2006.

Back to the index

SEO Checker

Name: SEO Checker
Author: Backlinko

backlinko.comSEO audit & analysis

SEO Checker evaluates webpages and provides an SEO score, on-page issue detection, speed data, and recommended fixes. It is designed for marketers, website owners, and SEO professionals, with three free checks per day and Semrush-powered analysis.

FreemiumWebEmbeddableCloud-managed

Visit backlinko.com

Overview

6 features

SEO Checker is a SEO audit & analysis project. It focuses on identifying and fixing on-page SEO, technical, and performance issues that limit website visibility. It is built as a B2B product for website owners, marketers, and SEO professionals. There is a free tier. It ships for the web and embeddable surfaces.

Backlinko builds and maintains SEO Checker, and it first shipped in 2006. Among its 6 catalogued features are SEO score, on-page analysis, and speed data.

Summary written by a language model from the project’s public pages.

SEO score
On-page analysis
Speed data
Issue detection
Actionable fixes
Free daily checks

Built with & integrations

Framework

Next.js

Hosting

Netlify

Runs on

BrowserEmbeddableCloud-managed

Detected from

Next.js: /_next/static/ in the HTML · __next_f in the HTML
Netlify: x-nf-request-id header

Trust & compliance

Verified signals

HTTPSFree tierStore-verified publisher

Indexing history

What PulseGate has recorded for this listing

Indexed8 Sept · 00:25 UTC
SeoQuake SEO extension verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about SEO Checker

What is SEO Checker?: SEO Checker focuses on identifying and fixing on-page SEO, technical, and performance issues that limit website visibility. It is catalogued under SEO audit & analysis on PulseGate.
Who is SEO Checker for?: SEO Checker is a B2B product built for website owners, marketers, and SEO professionals.
Does SEO Checker have a free plan?: Yes — there is a free tier, with paid plans for advanced use.
What platforms does SEO Checker run on?: SEO Checker runs on the web and embeddable surfaces.
Is SEO Checker still maintained?: Unverified. SEO Checker has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to SEO Checker?: Similar projects tracked by PulseGate include SEOCheckr, SEO Health Checker Extension, and SEO Checker.SEOCheckr SEO Health Checker Extension SEO Checker
Who makes SEO Checker?: SEO Checker is developed by Backlinko.
When did SEO Checker launch?: SEO Checker first shipped in 2006.

At a glance

Pricing: Freemium · pricing page detected · free tier
Platforms: Web
Languages: English
First seen: 8 Sept 2026
Built for: website owners, marketers, and SEO professionals
Model: B2B
Solves: Identifying and fixing on-page SEO, technical, and performance issues that limit website visibility.

Registered as

Firefox Add-ons: seoquake-seo-extension

Developer

Backlinko

Index record

Indexed: 8 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 8 Sept 2026

Identity audit (13)

Slug: seoquake-seo-extension-seoquake-com
Lifecycle last checked: 8 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 8 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 8 Sept 2026
Canonical URL: https://backlinko.com/tools/seo-checker

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