MozBar
Browser ExtensionInstant page metrics and link data in your browser
Overview
MozBar is the browser extension arm of Moz's SEO toolkit, delivering instant access to Domain Authority (DA), Page Authority (PA), and link metrics directly in your Chrome browser. Originally launched in 2008 as one of the first SEO browser extensions, MozBar has become a staple tool for SEO professionals who need quick competitive intelligence while browsing the web. The extension overlays Moz's proprietary metrics on any webpage, eliminating the need to constantly switch between browser tabs and SEO tools.
Unlike comprehensive SEO platforms, MozBar focuses specifically on providing contextual data while you browse. Its strength lies in instant access to Moz's authority metrics, which have become industry shorthand for domain strength despite not being official Google ranking factors. The tool integrates smoothly with Google search results, displaying DA/PA scores directly on SERPs, making competitor analysis significantly faster than manually checking each domain.
The extension operates on a freemium model, offering core authority metrics for free while reserving advanced features like unlimited queries and keyword difficulty scores for Moz Pro subscribers. This approach makes it accessible to solo practitioners and small teams while encouraging upgrades to Moz's full platform for agencies and larger organizations.
Key features
Domain Authority & Page Authority
Instant view of Moz's proprietary domain and page authority scores for any website. Essential for quick competitive analysis and link prospecting.
SERP Overlay
Displays DA/PA scores directly on Google search results pages. Saves time when evaluating competitor strength in search results.
Link Metrics
Shows total linking domains, inbound links, and MozRank data. Helps identify link building opportunities and assess page link equity.
On-Page Elements
Highlights page title, meta description, H1 tags, and alt text. Quick way to audit basic on-page SEO elements while browsing.
Keyword Difficulty
Access to Moz's keyword difficulty scores for search terms. Requires Moz Pro subscription for full functionality.
Spam Score
Identifies potentially spammy websites using Moz's spam score algorithm. Useful for link building quality assessment.
Pricing
| Plan | Price | Includes |
|---|---|---|
| Free | Free | Domain Authority, Page Authority, basic link metrics, SERP overlay |
| Moz Pro | $99/month | Unlimited page metrics, advanced link data, keyword difficulty, spam score |
FAQ
Does MozBar work on all websites?
MozBar works on most websites but may have limited functionality on sites with strict content security policies. It works best on standard web pages and search engine results pages.
Can I use MozBar without a Moz Pro subscription?
Yes, MozBar offers core features like Domain Authority and Page Authority for free. Advanced features like unlimited queries and keyword difficulty require a Moz Pro subscription.
How accurate is Domain Authority compared to Google rankings?
Domain Authority is a predictive metric, not a Google ranking factor. It's useful for comparative analysis but doesn't directly correlate with search rankings.
Does MozBar slow down my browser?
MozBar has minimal impact on browser performance for most users. It only loads data when activated and can be toggled on/off as needed.
Can I export data from MozBar?
MozBar doesn't offer direct export functionality. You'll need to use Moz Pro's main platform or other tools for bulk data export and analysis.
Review Sentiment
Bottom line
A free option for SEO practitioners: MozBar offers free Chrome extension showing Domain Authority and Page Authority for any page. It lacks a review track record, so treat it as experimental.
People love
- +Free Chrome extension showing Domain Authority and Page Authority for any page
- +SERP overlay displays authority metrics directly in Google search results
- +Quick link analysis identifies follow/nofollow links and redirect chains on any page
Common complaints
- –Premium metrics like keyword difficulty require a Moz Pro subscription at $49/mo
- –Domain Authority metric can be misleading for newer or smaller sites
- –Extension can slow down browsing when analyzing pages with many links
Last updated Feb 2026