- SEO Chrome extensions side by side
- Ten SEO Chrome extensions worth installing
- The meta keywords myth some extensions still feed
- One-click checkers versus platform toolbars
- Questions to ask before you install an SEO extension
- Signs you have too many SEO extensions
- My plain advice on choosing SEO Chrome extensions
- Frequently asked questions
The best SEO Chrome extensions show you a page's titles, meta data, headings, keyword data and technical details without leaving your browser. Free one-click checkers suit bloggers and small business owners, while toolbar extensions from bigger SEO platforms suit marketers who already use those tools. Ten options follow in no particular order.
Half of SEO is noticing things. Is that title too long? Why does this competitor rank? Which keyword is this page chasing? An SEO extension answers those questions in one click while you browse.
The ten extensions below are listed alphabetically and in no particular order, and every description comes from the tool's own website or store listing, read this week. If you'd like a broader look, my guide to the best browser extensions covers more than SEO.
SEO Chrome extensions side by side
In the free plan column, Yes means the tool's own site names a free plan, a free account, a free allowance or an open source version. Trial only means a time-limited trial. Not stated means the pages I read named neither, even where there's a button inviting you to start for free.
| Tool | Type | Good for | Free plan |
|---|---|---|---|
| Ahrefs SEO Toolbar | Free SEO browser toolbar | On-page and hreflang checks at a glance | Yes |
| Detailed SEO Extension | Free one-click SEO insights extension | One-click on-page SEO overview | Yes |
| Glimpse | Trend discovery tool with a Chrome extension | Spotting rising trends early | Not stated |
| Keywords Everywhere | Keyword research browser extension | Keyword data while you browse | Not stated |
| Lighthouse | Open source automated page quality tool | Performance and accessibility audits | Yes |
| META SEO inspector | Chrome extension for metadata and page structure | Checking titles, canonicals and headings | Yes |
| MozBar | Free SEO toolbar for Chrome and Firefox | Moz insights on search results and pages | Yes |
| SEO Minion | Chrome extension for everyday SEO tasks | On-page checks, broken links and previews | Not stated |
| Similarweb | Website traffic insights extension | Estimating a site's traffic in one click | Trial only |
| Wappalyzer | Technology lookup tool with browser apps | Seeing what tech a site runs on | Not stated |
Ten SEO Chrome extensions worth installing
Ahrefs SEO Toolbar
Best for: SEO specialists who want quick on-page and hreflang checks on any page they visit without opening a full tool.
Detailed SEO Extension
Best for: Content marketers who want quick on-page SEO insights for any page in a single click, in Chrome or Firefox.
Glimpse
Best for: Content planners who want to discover rising trends before they peak, with forecasts and an extension in the Chrome Web Store.
Keywords Everywhere
Best for: Bloggers and PPC managers who want keyword data for SEO, PPC, YouTube and social while they browse as normal.
Lighthouse
Best for: Developers and site owners who want free automated audits of performance, accessibility and SEO basics on any page.
META SEO inspector
Best for: Technical marketers who want titles, descriptions, canonicals, meta robots, headings and image alt text checked in the browser.
MozBar
Best for: Marketers who want Moz's free SEO toolbar on search results and pages, with premium features if they upgrade to Moz Pro.
SEO Minion
Best for: Keywords Everywhere customers who want on-page analysis, broken link checks, hreflang checks and SERP previews in one extension.
Similarweb
Best for: Marketers checking competitors who want traffic estimates and engagement data for any website from the browser bar.
Wappalyzer
Best for: Agencies and developers who want to look up the technologies a website runs on before an SEO or site audit.
The meta keywords myth some extensions still feed
Plenty of extensions still show a meta keywords field, and some even flag it as missing. Google Search Central is blunt about it: the meta keywords tag is not used by Google Search, and it has no effect on indexing and ranking at all.
Want AI doing the heavy lifting in your marketing?
I build the systems that handle the boring 80 percent, so you get your week back. Done properly, with the human kept in.
So if an extension marks your page down for missing meta keywords, ignore it. Spend that time on the things Google does read, such as a clear title, a helpful meta description, sensible headings and content that answers the question someone typed.
One-click checkers versus platform toolbars
One-click checkers show the basics of any page: title, description, headings, canonical tags and images. Platform toolbars come from bigger SEO tools and bring their data into your browser, such as keyword volumes, domain metrics or traffic estimates.
A free checker is enough for most small business owners. Toolbars make sense when you already pay attention to that platform's numbers and want them on every page you visit.
Questions to ask before you install an SEO extension
- Does it show titles, descriptions, headings and canonicals clearly?
- Does it check redirects, broken links or hreflang tags?
- Does it need an account or another subscription to work?
- What permissions does it ask for in Chrome?
- Will it slow my browser down?
- Does it work in Firefox too, if I switch browsers?
Signs you have too many SEO extensions
- Your toolbar is full of icons. Keep the two you use.
- Pages load slowly. Disable extensions you rarely open.
- They disagree with each other. Trust the page source.
- You check scores, not pages. Fix what readers notice.
Do you make an SEO Chrome extension? Tool makers can ask to be considered for a featured place on this list.
My plain advice on choosing SEO Chrome extensions
Install two at most: one free on-page checker and one tool that gives you keyword or traffic data. More than that and your toolbar becomes noise, and you'll stop looking at any of them. Pin the one you use most and check your own key pages once a month.
And keep extensions as helpers, not judges. If you want a fuller picture of your site, my roundup of AI SEO tools goes further, and my guide to keyword research with free tools shows what you can do for nothing.
Frequently asked questions
What is an SEO Chrome extension?
An SEO Chrome extension is a browser add-on that shows SEO information about the page you're viewing, such as titles, meta data, headings, keyword data or traffic estimates.
Are there free SEO Chrome extensions?
Yes. Several extensions here describe themselves as free or open source. The free plan column above shows what each tool's own page says.
Does Google use the meta keywords tag?
No. Google Search Central says the meta keywords tag is not used by Google Search and has no effect on indexing and ranking.
Are SEO extensions safe to install?
Install them from the Chrome Web Store or the vendor's own site, check the permissions they ask for and remove any you no longer use.
Can an extension replace a full SEO tool?
For quick checks, yes. For site-wide audits, rank tracking and research at scale, you'll still want a full SEO platform.
Do SEO extensions work in other browsers?
Many also offer Firefox or Edge versions. Check each tool's own page before you switch.
