Mozbar
Mozbar is a free browser extension from Moz that shows SEO metrics and on-page data as you browse websites or search results.
Key facts
- Mozbar is a free browser extension from Moz.
- It is available for Google Chrome and Firefox.
- It displays Moz metrics such as Domain Authority, Page Authority, and Spam Score.
- It can show backlink data and link attributes (followed/nofollowed) while browsing.
- It helps inspect on-page elements like title tags and meta tags.
- A Moz login is required for full functionality.
Also called
Moz Bar, Moz SEO Toolbar, MozBar extension
Use it for
Quick on-page SEO analysis and metric lookup
Applies to
Google Chrome and Firefox browsers (SERP analysis)
What Metrics Mozbar Shows
Mozbar displays several proprietary metrics from Moz. The most prominent are how domain authority works and Page Authority. These scores estimate a page's likelihood to rank, but they are Moz's own calculations. Moz also provides Brand Authority and Spam Score. Spam Score estimates the risk of a site being penalised. All metrics are relative and should not be treated as Google's ranking factors.
Beyond these, Mozbar shows link metrics. You can see the number of linking domains, total links, and the ratio of followed to nofollowed links. The toolbar also includes a quick summary of the page's backlink profile. These data points update as you navigate.
- Domain Authority: predicts ranking potential for a domain.
- Page Authority: predicts ranking potential for a specific page.
- Spam Score: flags potential spammy characteristics.
- Brand Authority: measures brand strength online.
- Link metrics: number of linking domains, total links, followed/nofollowed.
How to Use Mozbar for SERP Analysis
After installation, Mozbar adds a toolbar in your browser. When you search on Google, Bing, or other engines, Mozbar overlays metrics on each result. You can see Domain Authority and Page Authority for each listing. This helps you quickly assess which pages might be stronger. You can also filter results by these scores. nofollow links are highlighted in the results, so you can see which sites link without passing authority.
The toolbar also offers a SERP analysis panel. This panel shows the top-ranking pages and their metrics. You can export the data to a CSV file for further study. Competitor analysis becomes faster: just hover over a result to see its link profile summary.
- View metrics directly in search results.
- Sort or filter results by authority scores.
- Export SERP data for further analysis.
- Compare your site against competitors.
Inspecting On-Page Elements with Mozbar
Mozbar's Page Analysis feature lets you examine individual pages. You can view the page's title tag, meta description, headers, and structured data. what moz pro means users get additional features like full-page analysis and keyword data. The extension also highlights all links on the page, distinguishing internal, external, followed, and nofollowed. This is useful for quick audits of link profiles.
You can toggle the link highlighting on and off. The toolbar also shows the page's HTTP status code and redirect chain. For a quick check, you can see the page's word count and keyword density. These features help you spot basic on-page issues without leaving the page.
- Title tag and meta description preview.
- Header tags (H1-H6) in order.
- Structured data detection.
- Link attribute highlighting (followed, nofollowed, internal, external).
- HTTP status code and redirect path.
Understanding Mozbar's Limitations
Mozbar's metrics are estimates, not official Google signals. moz toolbar historically included PageRank, which is now deprecated. Mozbar's scores are based on Moz's own index, which is smaller than Google's. Spam Score is a heuristic, not a guarantee. The extension requires a Moz account and may slow down page load if not managed.
Domain Authority and Page Authority are relative measures. They change over time and can be inconsistent across different updates. Using them as absolute ranking predictors can mislead. The toolbar is a quick inspection tool, not a replacement for a full technical SEO audit.
- Domain Authority is not a Google ranking factor.
- Data is from Moz's index, not live Google data.
- Spam Score can produce false positives.
- Performance impact on large pages.
Mozbar vs. Other SEO Toolbars
Several other tools offer similar functionality. Authority Score from Semrush is a comparable metric. how domain rating ahrefs works is Ahrefs' equivalent. Unlike Mozbar, Ahrefs' toolbar uses its own link index. lighthouse score from Google is a different tool focused on performance, not SEO metrics. Mozbar is free with a basic account, while others may require paid subscriptions.
Each toolbar has its own strengths. Mozbar's strength is its simplicity and free tier. Ahrefs offers a more comprehensive link index, but its toolbar is part of a paid plan. Semrush's Authority Score combines multiple signals. Choose based on your budget and the metrics you trust most.
Installing and Setting Up Mozbar
Mozbar is available from the Chrome Web Store and Firefox Add-ons. After installation, you need to log in with a Moz account to access all features. The free tier gives you limited daily queries. search engine optimization tools like Mozbar require careful use to avoid overwhelming your browser. You can customise which metrics appear in the toolbar.
To install, visit the official store page for your browser. Click 'Add to Browser' and confirm the permissions. Then sign up for a free Moz account at their website. Log in within the extension to activate it. You can then adjust settings via the toolbar icon, choosing which metrics to display and how often to refresh.
- Visit Chrome Web Store or Firefox Add-ons.
- Click Add to Browser.
- Sign up for a free Moz account.
- Log in and enable the extension.
- Customise settings via the toolbar icon.
| Metric | What It Represents | Caveat |
|---|---|---|
| Domain Authority | Predicted ranking strength of a domain | Not a Google ranking factor; based on Moz's index |
| Page Authority | Predicted ranking strength of a single page | Not a Google ranking factor; based on Moz's index |
| Spam Score | Risk of spam penalties | Heuristic; may flag false positives |
| Brand Authority | Online brand strength | Newer metric; less widely adopted |
Common mistakes
- Treating Domain Authority or Page Authority as Google ranking signals You may misjudge a page's true ranking potential, as Google does not use these metrics.
- Using Mozbar as a full technical SEO audit replacement You miss deeper issues like page speed, crawl errors, or duplicate content that Mozbar does not check.
- Assuming the numbers are universal across tools Mozbar metrics are specific to Moz's data model; they differ from Ahrefs, Semrush, or other tools.
- Forgetting to log in or enable the extension Limited access to features; many metrics and data overlays are unavailable without a Moz account.
Questions
How to use Mozbar?
Install the extension from the Chrome Web Store or Firefox Add-ons. Log in with a free Moz account. Once active, the toolbar appears at the top of your browser. You can hover over search results to see metrics, or click the toolbar icon to inspect page elements.
What is Mozbar?
Mozbar is a free browser extension from Moz that displays SEO metrics like Domain Authority and Page Authority as you browse. It also helps inspect on-page elements and link attributes. It is designed for quick SEO analysis without leaving your browser.
Is Mozbar free?
Yes, Mozbar is free to download and use. However, the free tier has limited daily queries for metrics. For unlimited access, you need a paid Moz Pro subscription.
How to install Mozbar?
Go to the Chrome Web Store or Firefox Add-ons website. Search for 'Mozbar' and click 'Add to Browser'. Confirm the permissions. After installation, create a free Moz account and log in within the extension to activate it.
See also
- On-page SEOOn-page SEO means optimising individual webpages so search engines understand their topic and u…
- SEO AuthorityPage Authority (PA) is Moz's page-level score that predicts how likely a specific URL is to ran…
- Backlink ProfileA backlink profile is the complete collection of external links pointing to a website, showing …
- Backlink MonitoringBacklink monitoring means regularly checking all the links pointing to your website to catch ne…
- SEO DomainsA domain is the main web address of a site that affects how easily search engines find and orga…
- Dead Link CheckerA tool that crawls web pages to find links returning error codes like 404 or 410.
Sources
- MozBar Help Guide moz.com
- MozBar Chrome Web Store listing chromewebstore.google.com
- MozBar product page moz.com
- MozBar V4 announcement moz.com
Outbound links are unpaid and nofollow. If one has gone stale, tell me.