SEO Plugin for Chrome: The Best Options
If you have searched for an SEO plugin for Chrome, here is the first thing to know: Chrome doesn't technically have "plugins" anymore — it has extensions. The words are used interchangeably in everyday conversation, so an SEO plugin for Chrome and an SEO Chrome extension are the same thing. Once that's clear, the real question is simply which one to install. This guide explains the terminology and lists the best options.
It's part of our full SEO Chrome extension guide. For the no-cost angle, see the free SEO Chrome extension round-up, and for page auditing specifically, the on-page SEO Chrome extension picks.
Plugin vs extension: what's the difference?
Historically, browser "plugins" were separate software components (think the old Flash or Java plugins) that ran embedded content. Chrome retired that plugin architecture years ago. What you install today from the Chrome Web Store is an extension — a small program that adds features to the browser itself.
So when people say "SEO plugin for Chrome," they almost always mean an SEO extension. The word "plugin" is more accurate in a CMS context: WordPress has SEO plugins like Yoast and Rank Math that run on your website, whereas Chrome has SEO extensions that run in your browser. Same intent, different platform.
| Term | Where it runs | Examples |
|---|---|---|
| SEO plugin | On your website (CMS) | Yoast, Rank Math (WordPress) |
| SEO extension / "plugin for Chrome" | In your browser | SeoWorx, SEOquake, MozBar |
The best SEO "plugins" (extensions) for Chrome
SeoWorx
SeoWorx is an all-in-one SEO plugin for Chrome that shows Moz, SpyFu and DataForSEO metrics under every Google result and on any page — authority, keywords, traffic, backlinks, on-page and tech stack in one overlay. It's the closest thing to a single "do-everything" Chrome SEO plugin.
SEOquake
SEOquake is a free, long-standing SEO plugin for Chrome from Semrush, offering SERP overlays, on-page diagnostics, keyword density and CSV export.
MozBar
MozBar is the classic authority plugin, showing Domain Authority and Page Authority in the search results with link metrics on a free Moz account.
Ahrefs SEO Toolbar
The Ahrefs SEO Toolbar is a powerful plugin for Ahrefs users, adding on-page reports and SERP metrics like Domain Rating and backlinks.
Keywords Everywhere
Keywords Everywhere is a keyword-focused plugin that overlays search volume, CPC and related terms across Google, YouTube, Amazon and more.
Which SEO plugin for Chrome should you install?
Match the tool to the job:
- Want everything in one place? SeoWorx is the single-overlay pick.
- Want it free? SEOquake, MozBar and Keyword Surfer are strong — see the free SEO Chrome extension guide.
- Already pay for Ahrefs? The Ahrefs SEO Toolbar is a natural add.
- Focused on keyword research? Keywords Everywhere earns its place.
You don't need many. One all-in-one plugin plus a keyword tool covers most day-to-day SEO.
How to install an SEO plugin for Chrome
Every option here installs from the official Chrome Web Store in a couple of clicks. Because extensions request browser permissions, it's worth installing only well-reviewed tools and reviewing what each one can access — our download and install guide covers the safe way to do it.
Frequently asked questions
Is there a real difference between a Chrome SEO plugin and an extension?
No. Chrome retired its old plugin architecture years ago, so everything you install from the Chrome Web Store today is technically an extension. "SEO plugin for Chrome" is just the informal way people describe an SEO extension — the two terms point to the same tools.
What's the best SEO plugin for Chrome?
For an all-in-one option, SeoWorx shows Moz, SpyFu and DataForSEO metrics in one overlay. For free favorites, SEOquake and MozBar are excellent, and Keywords Everywhere is the pick if keyword data is your priority. Match the tool to your main job rather than installing all of them.
Do "SEO plugins" work in Edge and Brave too?
Yes. Because Edge, Brave and Arc are Chromium-based, the same Chrome Web Store extensions install and run in them, and several tools also offer a separate Firefox add-on.
The bottom line
There's no separate category of "SEO plugin for Chrome" — it's just an SEO extension by another name. The best one for most people is an all-in-one overlay like SeoWorx, backed by a free favorite or two. Pick based on your workflow, keep your stack small, and you'll have professional SEO data a click away on every page.