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.
Score breakdown
Composite Score
41.0Our review
MozBar is Moz's free Chrome extension that shows Domain Authority, Page Authority, and other SEO metrics directly in search results and on any webpage. It's one of the most widely-used free SEO browser tools.
Pros
- ✓Industry-standard DA/PA metrics trusted by SEO community
- ✓Seamless Google SERP integration for instant competitor analysis
- ✓Free tier provides substantial value for basic authority checking
Cons
- —Limited feature set beyond Moz's proprietary metrics
- —Requires Moz Pro subscription for advanced functionality
- —Lacks comprehensive technical SEO capabilities found in competitors
Best for
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.
Capabilities
AI Visibility Metrics
Content & Optimization
Entity SEO
Traditional SEO
Technical & Integrations
Integrations
Social Proof
over 1 million users
Notable Customers
Testimonials
“The MozBar has been a critical part of my link building strategies and competitive analysis for 5 years now, through agency work and in house SEO. It's the tool that gets the most excited responses when you share it with your clients: it's easy to use, easy to understand, and adds an extra layer of information to every website you visit. Definitely a must have for any SEO.”
“Two-clicks is all you need for basically any SEO-related data point you could ever want. On-page elements, HTTP status codes, link metrics, schema markup, keyword difficulty ... it's all only 2 clicks away! MozBar is the single most useful item in my SEO toolbox, and it keeps getting better. Stop wasting your time, download MozBar!”
“I use the MozBar all day long, every day, on every project. The SERP overlay gives instant, critical information on the competitiveness of any given query, and the domain and page stats give a valuable snapshot of the link juice 'big picture'. And, the new spam score tells me if trouble's brewing as a result of past SEO efforts ... even if the client is unaware of or not admitting to iffy link-building activity in their past.”
aiseo.is Score
#2 of 5 in Browser Extension
Review Sentiment
🟠Reddit sentiment
positive10 threads in SEO, website, digital_marketing
🔵𝕏 sentiment
positive3 posts
“SERP Analysis: → MozBar (DA/PA checker - free Chrome extension) → Keywords Everywhere (search volume overlay)”
@I_m_awaiss
“📷 MozBar - Instant domain authority check”
@lookkleweb
Last updated Feb 2026
Quick Facts
Target Market
Ideal for
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