Best Chrome Extensions for Marketers
Last updated · picks re-checked against the Chrome Web Store
Marketing work happens across a dozen browser tools, and the right extensions collapse the research half of that into the page you are already on.
How we picked
- • Data available inside daily workflows
- • Exports for reporting
- • Reasonable per-seat pricing
- • Does not require engineering help
At a glance
| # | Extension | Best for | Rating | Users | Pricing |
|---|---|---|---|---|---|
| 1 | Keywords Everywhere | Keyword research in the flow of browsing, for people happy to buy credits instead of a full platform | 4.5 | 1M+ | Paid |
| 2 | Detailed SEO Extension | The first extension to install for technical and on-page SEO checks, free and account-free | 4.9 | 600K+ | Free |
| 3 | Wappalyzer | Developers, agencies and sales teams researching what a site is built with. | 4.6 | 3M+ | Freemium |
| 4 | Buffer | Social media managers scheduling content while browsing sources. | 4.7 | 200K+ | Freemium |
| 5 | Grammarly | Professionals and students who write daily in the browser and want a safety net before hitting send. | 4.5 | 37M+ | Freemium |
Ratings and install counts come from each extension's Chrome Web Store listing. A dash means the figures have not been synced yet.
1. Keywords Everywhere
Keyword volume, CPC and competition data inside search results.
Best for: Keyword research in the flow of browsing, for people happy to buy credits instead of a full platform
4.5~1M+ usersPaid2. Detailed SEO Extension
One-click on-page SEO audit for any URL.
Best for: The first extension to install for technical and on-page SEO checks, free and account-free
4.9~600K+ usersFree3. Wappalyzer
Identifies the technology stack behind any website.
Best for: Developers, agencies and sales teams researching what a site is built with.
4.6~3M+ usersFreemium4. Buffer
The Buffer extension lets you queue a post to your connected social accounts from any page or image, without opening the Buffer da.
Best for: Social media managers scheduling content while browsing sources.
4.7~200K+ usersFreemium5. Grammarly
Grammar, spelling and tone suggestions everywhere you write.
Best for: Professionals and students who write daily in the browser and want a safety net before hitting send.
4.5~37M+ usersFreemium
What to know before choosing
Keyword and SERP data is the foundation: seeing volume and competitiveness while reading a competitor's article is what turns browsing into a content plan. Pair it with technology detection to understand a competitor's stack — the CMS, analytics and paid tools a site runs reveal a surprising amount about how the team operates and where the budget goes.
The execution half needs two things: something to schedule what you publish, and something to catch the errors that undermine credibility in public copy. Both are cheap, and both remove a review step from every piece of work.
Compare the shortlist head-to-head
Narrowed it to two? These side-by-side comparisons settle it with a feature table and a verdict.
Alternatives to the top picks
Frequently asked questions
Which extensions help with competitor research?
Keyword overlays for demand, on-page auditors for content structure, and technology detection for the stack behind the site.
Can I schedule social posts from an extension?
Yes — scheduling extensions queue a post to connected channels from any page you are reading.
Are keyword volume extensions worth paying for?
For content teams publishing weekly, credit-based keyword data is much cheaper than a full SEO suite.