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Updated April 2026

Ahrefs SEO Toolbar for Firefox:
Install Guide & Full Review

Yes — Ahrefs SEO Toolbar has a full Firefox version with feature parity to Chrome. Here's how to install it, what's free, and what it can't do on Firefox.

Official Firefox version existsFull feature parityFree to install
Quick answer
Ahrefs SEO Toolbar works on Firefox with complete feature parity to the Chrome version. Every free feature — on-page audit, redirect tracer, link checker, HTTP headers, country switcher — works on Firefox without any account. Install from addons.mozilla.org in under 2 minutes.

How to Install Ahrefs SEO Toolbar on Firefox

Step 1: Open Firefox and go to addons.mozilla.org. Search for Ahrefs SEO Toolbar. Click the result published by Ahrefs Pte. Ltd. — verify the publisher name before installing.

Step 2: Click Add to Firefox. Firefox will show a permissions dialog: the extension needs access to read and modify data on all websites. This is required for on-page analysis and the link checker. Click Add to confirm.

Step 3: A confirmation popup appears. The extension is now installed. Click Okay.

Step 4 (Pin to toolbar): Click the Extensions icon (puzzle piece) in Firefox's toolbar. Find Ahrefs SEO Toolbar in the list. Click the three-dot menu → Pin to Toolbar. The Ahrefs "A" icon will appear permanently.

Step 5: Navigate to any webpage and click the Ahrefs icon to run a free on-page SEO report. No account or sign-in needed.

Free Features on Firefox

FeatureFirefox (free)Notes
On-page SEO report✓Titles, metas, H-tags, canonicals, robots
Broken link checker✓Highlights broken links on any page
Redirect tracer✓Full redirect chain visualised
HTTP header reader✓Response headers for any URL
Link highlighter✓Visually marks all links on page
Country/language switcher✓Change Google country for keyword research
User-agent switcher✓Emulate Googlebot and other agents
DR / UR metricsPaid onlyRequires Ahrefs subscription ($29+/mo)
SERP overlayPaid onlyRequires Ahrefs subscription

Firefox vs Chrome — Any Differences?

Feature parity is complete between the two versions. The only difference is installation and permission handling — Firefox uses its own extension architecture (WebExtensions API, which is also what Chrome uses, so implementations are nearly identical).

One minor UX difference: Firefox does not have the same "pin to toolbar" flow as Chrome. You need to manually pin via the Extensions menu as described above. Otherwise, everything works identically.

ℹ If you see the Ahrefs icon grayed out on some pages, the extension may not have permission for that specific site. Click the icon → grant permission for the current tab or all sites.

Frequently Asked Questions

Yes. Install from addons.mozilla.org by searching 'Ahrefs SEO Toolbar'. The publisher should be Ahrefs Pte. Ltd. All free features (on-page audit, redirect tracer, link checker, country switcher) work immediately with no account needed.
Yes. On-page reports, redirect tracing, broken link checking, HTTP headers, and country/language switching all work for free with no Ahrefs account. DR, UR, and backlink metrics require a paid subscription.
Feature parity is complete. The only differences are in the Firefox-specific install process and toolbar pinning UI. Once installed, both versions behave identically.

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