GrowthPedia

Moz Toolbar

Moz Toolbar, also called MozBar, is a free browser extension that shows you SEO metrics like Domain Authority directly on any webpage you visit.

Level: BeginnerRead: 1 minUpdated: 27 Jul 2026By Vera Lindqvist

Key facts

  • MozBar is available as a browser extension for Google Chrome and Firefox.
  • It shows metrics such as Domain Authority, Page Authority, and backlink counts while you browse.
  • It can highlight followed and nofollowed links on a page.
  • Some features require logging in to a Moz account.

Also called

MozBar

Use it for

Quick SEO analysis and link inspection in the browser

Applies to

all websites (browser extension)

How MozBar Shows SEO Metrics

When you install MozBar, it adds a toolbar to your browser. While browsing any page, you can view metrics like Domain Authority. Page Authority also comes from Moz. These numbers appear in the toolbar or as an overlay on search results.

The toolbar also displays backlink counts and Brand Authority. You can toggle these metrics on and off. MozBar fetches data from Moz's index, so it requires an internet connection.

  • Domain Authority
  • Page Authority
  • Brand Authority
  • Backlink count
  • Linking domains

Inspecting On-Page Elements with MozBar

Beyond metrics, MozBar lets you inspect on-page seo elements directly. It can highlight link types, such as followed and nofollowed links. You can also see internal versus external links.

The tool can surface Mozbar's on-page analysis features, including title tags, meta descriptions, and alt text. You can also view robots meta tags and canonical links. This is useful for quick technical checks.

  • Title tags
  • Meta descriptions
  • Alt text
  • Robots meta tags
  • Canonical links
  • Followed and nofollowed links
  • Internal and external links

What MozBar Metrics Actually Mean

Domain Authority is a comparative metric, not an absolute score. Moz calculates it from multiple factors. It is not a Google ranking factor, and Google has stated this.

Similarly, Page Authority is a page-level estimate. Use these metrics to compare sites, but do not treat them as definitive. Moz Pro subscribers get additional data like keyword rankings.

For a broader view, combine MozBar with other SEO Tools like site crawlers and log analysis. MozBar is a starting point, not a full audit.

If you compare with how domain rating ahrefs works, you'll see other vendors have their own proprietary metrics. Each has its own methodology.

Common mistakes

  • Treating Domain Authority as a Google ranking factor It can lead to incorrect strategic decisions because DA is a Moz proprietary metric, not used by Google.
  • Assuming all features are free without a Moz account You may miss out on advanced features like keyword data or be unable to access certain metrics.
  • Using MozBar as a replacement for full site crawlers It provides only surface-level data and does not replace comprehensive technical SEO audits.

Questions

Is MozBar free?

Yes, MozBar is free to download and use. However, some features like keyword data require a Moz Pro subscription.

Can I use MozBar on mobile?

No, MozBar is only available as a desktop browser extension for Chrome and Firefox. It does not work on mobile browsers.

Does MozBar slow down my browser?

It may cause a slight slowdown because it loads metric data from Moz's servers, but the impact is generally minimal.

See also

Sources

  1. MozBar help guide moz.com
  2. MozBar product page moz.com
  3. Chrome Web Store listing for MozBar chromewebstore.google.com
  4. Moz blog announcement for MozBar v4 moz.com

Outbound links are unpaid and nofollow. If one has gone stale, tell me.