No single extension covers all of SEO. The best SEO Chrome extensions are the ones that match one task each: on-page checks, links, keywords, authority, local, or outreach. Below are 15, grouped by job.
We picked SEO tools that do one job well and identified every place where a paid account is needed.
Key takeaways
- Detailed SEO Extension, Check My Links and Web Vitals cover most free daily checks.
- Keywords Everywhere is the pick for search volume, but it runs on paid credits.
- The Ahrefs SEO Toolbar and MozBar show link and authority data. Ahrefs needs a paid plan for its metrics.
- Hunter and GMB Everywhere are for outreach and local work. Their free tiers are small.
- Cap your stack at five, and confirm anything important in Google Search Console.
Quick picks: Best SEO Chrome extension by task
Start with Detailed SEO Extension for on-page checks, Web Vitals for speed, and Check My Links for broken links. Add Keywords Everywhere for search volume. Add the Ahrefs SEO Toolbar for backlink data if you already pay for Ahrefs. Use Hunter for outreach emails.
The table maps each task to one tool.
| Task | Best extension | Why |
|---|---|---|
| On-page checks | Detailed SEO Extension | Free, no account, one-click page audit |
| Backlinks | Ahrefs SEO Toolbar | Link data on any page, but metrics need a paid Ahrefs account |
| Keyword volume | Keywords Everywhere | Volume, CPC and trends on the SERP, paid credits |
| Core Web Vitals | Web Vitals | Built by Google, shows LCP, INP and CLS live |
| Broken links | Check My Links | Scans a page and flags dead links fast |
| Outreach emails | Hunter | Finds work emails on any site you visit |
On-page and technical SEO Chrome extensions
Use these five to audit on-page fast. Detailed SEO Extension and META SEO Inspector read your tags and markup. SEO Minion adds link checks, but it now sits behind a paid Keywords Everywhere plan. Lighthouse and Web Vitals measure speed.
All five SEO extensions for Google Chrome run on the page you have open.
1. Detailed SEO Extension
Shows the main on-page elements of any page in one click: title, meta description, headings, canonical, schema and links.
- Best for: quick audits and content checks.
- Limitation: page-level only. No keyword or backlink data.
- Pricing: free, no account needed. Ahrefs now owns it.
2. SEO Minion
Runs on-page analysis and broken link checks from a sidebar. It also has a SERP preview and a Google location simulator.
- Best for: people who already pay for Keywords Everywhere.
- Limitation: no longer free. It needs a Keywords Everywhere Silver plan or higher. If you do not pay for that, skip it.
- Pricing: Silver is listed at $168 a year.
3. META SEO Inspector
Lists meta tags, social tags and structured data in a readable view, so you can spot missing or broken markup.
- Best for: checking Open Graph tags and schema before you publish.
- Limitation: it reads markup. It does not tell you whether Google will show a rich result. Use Google’s Rich Results Test for that.
- Pricing: free.
4. Lighthouse
Runs Google’s Lighthouse audit for performance, accessibility, best practices and SEO. It is also built into Chrome DevTools, so the extension adds little if you already use DevTools.
- Best for: lab testing a page before launch.
- Limitation: results come from your machine and connection. Scores shift between runs.
- Pricing: free.
5. Web Vitals
Google’s own extension. It shows LCP, INP and CLS for the page you are on, with a status badge and an optional overlay.
- Best for: debugging Core Web Vitals while you work.
- Limitation: local numbers come from your desktop. The field data it pulls from the Chrome UX Report can be missing for low-traffic pages.
- Pricing: free.
Link and redirect SEO extensions
Check My Links finds dead links on a page. Redirect Path shows status codes and redirect chains for a URL. Use them together after content updates and site migrations. Both are free and run on the page you have open. Neither crawls a whole site.
6. Check My Links
Scans every link on the current page and highlights working and broken ones.
- Best for: link checks on one article, resource page or footer.
- Limitation: one page at a time. For a full site crawl, use a crawler or Ahrefs Webmaster Tools.
- Pricing: free.
7. Redirect Path
Shows HTTP status codes and redirect chains as you browse. It flags 301, 302, 404 and 500 responses, plus meta and JavaScript redirects.
- Best for: checking redirects after a site migration or URL change.
- Limitation: it checks the URL you visit. It does not test a list of URLs in bulk.
- Pricing: free. Made by Ayima.
Keyword and SERP research SEO Chrome extensions
Keywords Everywhere gives you search volume and keyword ideas on the SERP, but it runs on paid credits. SEOquake is the free option for SERP analysis and page metrics. Use both for fast checks. Extension keyword data is a quick signal, not a plan. Use a full keyword tool for real research. Turning that research into pages at volume is its own workflow, as in scaling SEO content with AI.
8. Keywords Everywhere
Overlays search volume, CPC and competition on Google and other sites, and suggests related keywords.
- Best for: fast volume checks while you browse results pages.
- Limitation: it spends credits per keyword. One Google results page with the related-keyword widgets on can use 50 or more.
- Pricing: annual credit packs only. Bronze is listed at $84 a year for 100K credits. Credits expire after 12 months. Check the current price before you buy.
9. SEOquake
Semrush’s free extension for page-level checks and a SERP overlay. Semrush released a rebuilt version on September 9, 2026. It exports keyword density, links and compare data as CSV, and the audit as PDF.
- Best for: quick SERP comparisons and exportable page audits.
- Limitation: the rebuild dropped metrics that no longer had data behind them. Older tutorials show features that are gone.
- Pricing: free. Some metrics use public Semrush data.
Authority, backlink and competitor research SEO tools
The Ahrefs SEO Toolbar and MozBar show link and authority data. Similarweb estimates traffic. Wappalyzer detects the tech stack. Treat all four as estimates. The free versions give a taste, and the deeper numbers sit behind paid accounts. Use them to size up competitors, not to predict rankings.
10. Ahrefs SEO Toolbar
Shows an on-page report, redirect tracing, link highlighting and a SERP country switcher. With an Ahrefs account, it adds backlink and page metrics such as Domain Rating.
- Best for: Ahrefs customers who want link data on every page and SERP result.
- Limitation: backlink and keyword metrics need an Ahrefs plan. Each URL lookup uses one export row from your monthly limit.
- Pricing: extension is free. Metrics need a paid Ahrefs account.
11. MozBar
Shows Domain Authority, Page Authority and on-page elements. You need a Moz login to see the metrics.
- Best for: quick authority checks when vetting link prospects.
- Limitation: Domain Authority is a Moz score, not a Google ranking factor. Spam Score and deeper reports need Moz Pro, and free accounts have monthly query limits.
- Pricing: free with a Moz Community account. Moz Pro for the rest.
12. Similarweb
Shows estimated visits, traffic sources, rank and geography for any site. It also shows traffic referred from AI chatbots such as ChatGPT, Gemini and Claude. To see whether those answers name your brand at all, use AI visibility checks.
- Best for: sizing up competitors and link prospects.
- Limitation: estimates built from panel data. Small sites often return partial or off numbers. It asks you to allow anonymized clickstream data collection.
- Pricing: free to install and use without an account. Paid plans add depth.
13. Wappalyzer
Wappalyzer detects the technology like CMS, frameworks, analytics, CDN and more behind a website.
- Best for: checking a competitor’s CMS or a prospect’s stack before outreach.
- Limitation: it shows the current stack only, and accuracy varies. Bulk lookups, lead lists and the API are paid.
- Pricing: free extension for single-site checks. Paid plans run into the hundreds of dollars a month.
Local SEO and outreach Chrome extensions
GMB Everywhere researches Google Business Profiles. Hunter finds work emails for outreach. Both work on a free tier with tight caps. Use GMB Everywhere for local audits and category research. Use Hunter for link building and digital PR. Skip both if you do neither.
Local shops have another gap to watch, since AI search often skips local businesses entirely.
14. GMB Everywhere
Adds Google Business Profile categories, plus review and post audits, to Google Maps and local results.
- Best for: finding a competitor’s primary category and auditing a profile.
- Limitation: free use is capped. One directory lists 5 combined views a month, so confirm current limits. Several store listings use similar names, so check the publisher before you install.
- Pricing: freemium. Paid plans for more use.
15. Hunter
Finds professional email addresses for the site or profile you are viewing, with a confidence score for each result.
- Best for: link building outreach, digital PR and guest post pitches.
- Limitation: the free plan is small, and every lookup spends credits. It can miss emails on niche domains.
- Pricing: free plan with 50 credits a month. Paid plans start at $34 a month billed yearly, or $49 monthly.
How to build a lean SEO Chrome extension stack
Start with three free extensions. Add paid data only when a task needs it. Install a new one only when you hit a real gap.
If you do not pay for Ahrefs, pick MozBar for the fifth slot. The Ahrefs toolbar shows much less without a plan.
| Stack | Extensions | Best for |
|---|---|---|
| Free starter (3) | Detailed SEO Extension, Check My Links, Web Vitals | Bloggers and solo site owners |
| Mid-level (5) | Starter stack + Keywords Everywhere + Ahrefs SEO Toolbar or MozBar | Freelancers and in-house SEOs |
| Agency or power user | Mid-level stack + Similarweb, Hunter, GMB Everywhere | Agencies, link builders, local SEO |
What are common mistakes when using SEO Chrome extensions
Most mistakes come from trusting the numbers too much or installing too much. Fix these four and your extensions get more useful.
- Treating third-party metrics as ranking factors. Domain Authority, Page Authority and Domain Rating are vendor scores. Google does not use them. Compare sites with them. Do not predict rankings with them.
- Installing too many extensions. Each one can read pages and run scripts. More extensions mean more background activity and more permissions to review.
- Ignoring Google Search Console. Extensions estimate. Search Console shows real clicks, impressions and queries for your own site.
- Running outdated versions. Tools change fast. SEOquake dropped metrics in its 2026 rebuild. SEO Minion moved behind a paywall. Check the update date in the Chrome Web Store and read recent reviews.
Last Word on SEO Chrome Extensions
The best setup is small and specific. Pick one extension per task, keep the free ones running, and add paid data only when a job demands it. Treat every metric from SEO Chrome extensions as an estimate, and check real performance in Google Search Console. Start with the three-extension starter stack today. Add tools one at a time, and drop any you do not open within a month.
FAQs
Q#1. What is the best free SEO Chrome extension?
Detailed SEO Extension is the best free SEO Chrome extension for most people. It runs on-page checks in one click, needs no account, and has no locked features. For speed, add Google’s Web Vitals. For broken links, add Check My Links.
Q#2. Are SEO Chrome extensions safe to install?
Most are safe if you vet them. Check the publisher, recent reviews, last update date, and requested permissions. Prefer extensions from known companies such as Ahrefs, Semrush, Moz and Google. Be wary of look-alike names. Many extensions can read every page you visit, so remove the ones you do not use.
Q#3. Can Chrome extensions replace paid SEO tools?
No. Extensions show data for the page you are on. They do not crawl a full site, track rankings over time, or run deep keyword and backlink research. Many pull their best data from a paid account. Use extensions for quick checks and a paid suite for ongoing work.
Q#4. Which SEO extension shows keyword search volume?
Keywords Everywhere shows search volume, CPC, and competition on Google results, and it uses paid credits. The Ahrefs SEO Toolbar shows keyword metrics too, but only with an Ahrefs account. Free options show less. Google Trends gives relative interest, not volume.
Q#5. Do SEO extensions slow down Chrome?
They can. Chrome extensions for SEO that scan every page or inject overlays use memory and CPU, and a long list adds up. Keep three to five active and disable the rest. Turn off overlays such as MozBar when you do not need them.
