MozBar is a free SEO browser extension by Moz that provides instant SEO metrics for webpages and search engine results.

What metrics does MozBar show?

MozBar displays Domain Authority (DA), Page Authority (PA), backlinks, spam score, and keyword difficulty insights, helping users evaluate a site’s SEO strength quickly.

How does MozBar help with SEO research?

MozBar lets users analyze on-page elements, compare competitors in SERPs, highlight keywords, and check link attributes (follow/nofollow) in real time.

Does MozBar work on Google search results?

Yes, MozBar overlays DA, PA, and other SEO metrics directly in Google SERPs, making competitor comparison fast and easy.

Who should use MozBar?

MozBar is ideal for SEO beginners, bloggers, digital marketers, and website owners who want simple, fast SEO insights while browsing.

Reviewed · Updated 2026-06-19

MozBar

MozBar is a free Chrome extension that provides instant SEO metrics for any webpage or search engine results page (SERP). It offers quick access to Domain Authority.

Reviewed by the Conversion Gems editorial team · 2026-06-19

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Pricing

Free

Best for

Content marketers

Community ratings

2.7/ 5 aggregate · across 1 source

Trustpilot

2.7230+ reviews

Third-party ratings shown verbatim; aggregate weighted by review volume.

What it really is

MozBar — Moz's free Chrome SEO toolbar with optional premium metrics via Moz Pro.

Our take

MozBar is a well-established free Chrome extension that overlays Domain Authority, Page Authority, Spam Score, link metrics, and on-page SEO data on any page or SERP — no login required for core metrics. The DB lists it as 'free' but it's more accurately freemium: the free tier is genuinely useful, while MozBar Premium (deeper link analysis, additional SEO data) requires an active Moz Pro subscription starting at $39/mo (annual). No other mislabels; product identity and category are correct.

Why we rate it

MozBar's free tier punches above its weight: instant DA/PA on any page with no account needed is a genuine time-saver for daily SEO work. The extension has been the industry's go-to quick-check tool for over a decade, and Moz's authority metrics remain a lingua franca across SEO teams.

The catch

Premium features are gated behind a Moz Pro subscription, and Moz's proprietary DA/PA metrics can diverge from Ahrefs DR or Semrush AS — meaning teams relying on multiple tools may see conflicting scores. The free tier also has no historical trend data.

Best for

Quick competitive DA/PA checks on SERPs without leaving the browser

Content researchers auditing on-page SEO elements (headings, meta tags) on the fly

SEO teams already subscribed to Moz Pro who want instant metrics in the browser

Not good for

In-depth backlink audits that need full crawl data and historical trends

Teams preferring a single authority metric sourced from Ahrefs or Semrush ecosystems

Large-scale bulk domain analysis (the toolbar is page-by-page, not batch)

Friction report

Time to value

Fast: install from Chrome Web Store, visit any page, and DA/PA metrics appear immediately — no account required for core features.

Scale breakpoint

Breaks at scale: the toolbar is designed for single-page spot-checks; bulk or automated metric collection requires Moz Pro's API or full platform tools.

Walled garden

Moderate: all metrics are Moz-proprietary (DA, PA, Spam Score); deeper analysis and historical data are locked to Moz Pro, creating upgrade pressure as needs grow.

A look inside

Frequently Asked Questions

Alternatives

Step up

Moz Pro (Standard or Medium) for full rank tracking, site crawls, and keyword research alongside MozBar Premium.

Lighter alternative

Keywords Everywhere Chrome extension for lightweight keyword metrics at lower cost.

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