The Best SEO Toolbars for Chrome in 2026: Ahrefs vs MozBar vs the Free Options

# The Best SEO Toolbars for Chrome in 2026: Ahrefs vs MozBar vs the Free Options

An SEO toolbar is the difference between guessing and knowing. Visit any page and the authority metrics, backlink counts and traffic estimates appear instantly. No dashboards, no copy-pasting URLs. This guide compares the best options honestly, so you can pick the one that fits your workflow and budget.

What an SEO Toolbar Should Do

The essentials: show authority metrics on any page, display backlink data, highlight links on the page, and overlay data on Google search results. Speed matters too. A toolbar that makes browsing feel heavy is not worth it.

The Contenders

### Ahrefs SEO Toolbar

The best free tier in the category. Domain Rating, URL Rating, backlinks and organic traffic estimates work with a free Ahrefs account. The link highlighter is the best in class: green for follow, red for nofollow, broken links flagged. Keyword-level data needs a paid subscription, but the free tier covers most daily needs. Full review on the [Ahrefs toolbar page](https://singletabbrowser.com/extension/ahrefs-toolbar).

### MozBar

The original. Domain Authority and Page Authority are Moz's own metrics, which means they do not match the Ahrefs numbers exactly. The free version is limited to five lookups per search results page, which is frustrating for serious research. The link highlighter is solid. If you already live in the Moz ecosystem, it makes sense. Otherwise the free tier is too restrictive. See the [MozBar alternatives guide](https://singletabbrowser.com/guides/alternative-to-mozbar-best-alternatives-2026) for options.

### SEOquake

Completely free, which is its superpower. It shows a wide range of metrics including SEMrush data, Google index counts and Alexa rank. The on-page audit tool is genuinely useful. The interface is dated and busy, but you cannot argue with free.

### Detailed SEO Extension

Not a metrics toolbar, but the best free on-page analyzer. Title tags, meta descriptions, headings, image alt text, schema markup. Pair it with any metrics toolbar and you have a complete free SEO setup.

### SimilarWeb Extension

The traffic specialist. Estimated visits, traffic sources, engagement and geography for any site. Not a replacement for an authority toolbar, but an excellent companion.

### Semrush / Serpstat Extensions

If you already pay for Semrush or Serpstat, their extensions show positions and keywords directly in search results. The data is excellent, but the tools are only worth it if you already subscribe.

The Verdict

For most people, the answer is the Ahrefs SEO toolbar. The free tier is genuinely useful, the data is reliable, and the link highlighter alone is worth the install. SEOquake is the best option if you refuse to create any account. Detailed SEO Extension complements either one for on-page analysis.

You can run two toolbars together without issues. My current setup: Ahrefs for backlinks and authority, Detailed SEO Extension for on-page checks.

For the complete comparison with ratings and screenshots, check the [best SEO extensions for Chrome](https://singletabbrowser.com/best/seo-extensions) guide on SingleTab Browser.