SEO Chrome Extensions: The Short List That Still Works in 2026, Who Owns Each One Now, and What It Can Read

Thirteen extensions, rechecked on the Chrome Web Store in October 2026

Extension lists age badly: tools get sold, paywalled or abandoned while the old roundup keeps ranking. So every row below was opened on its Chrome Web Store listing this month, and the maker named is the one the listing shows under Offered by today. The last column is what each developer says it collects, in its own privacy disclosure. DataCram is not a partner, affiliate or reseller of any of these tools.

Nobody needs all thirteen. An owner checking their own site needs one on-page inspector and Redirect Path; a keyword researcher adds one volume overlay. The SEO tools hub shows where add-ons sit beside crawlers and suites.

On-page inspectors: the title, the tags and the headings in one click

The extension most SEOs open fifty times a day does one plain thing: it reads the page in front of you and shows the parts a search engine cares about, from the title tag to the structured data. All of it is in the page source. The extension saves you the scroll.

Detailed SEO Extension is the favorite, with 600,000 users on its listing. Detailed, the company that built it, announced in September 2025 that Ahrefs had acquired it, and said the plan is for the extension and its current features to stay free. The listing now shows AHREFS PTE. LTD. as the developer. META SEO inspector, from an independent developer, covers the same ground and adds Open Graph and Twitter tags, a broken link check and data export; its listing was updated October 13, 2026.

SEOquake, Semrush's free extension, audits a page and prints Semrush metrics beneath each Google result. Our page on SEO audit tools covers it in full, including its keyword density report and where it fits beside a real crawler. The free half of the Ahrefs SEO Toolbar adds a broken link checker, a redirect tracer and a switch that shows Google's results in another country.

• Read the title and description as a searcher would, not as a character count. Our guides to title tags and meta tags cover what to write.
• Check the canonical on every template, not just the home page. A product page pointing its canonical at the category is a common, quiet mistake; see canonical tags.
• Look for a stray noindex after any launch. It is the single most expensive line an inspector can show you.
• Count the H1s and read the outline. One clear H1 and headings that follow the page's argument beat any score.

Redirects, status codes and the HTML a crawler actually receives

Ayima's Redirect Path is the extension we would keep if we could keep only one. Its icon changes as each page loads and flags 301, 302, 404 and 500 responses, client-side meta and JavaScript redirects, server headers and the server's IP address. The listing, updated May 14, 2026 to version 4.0.0, says the processing happens on your own computer. It is the fastest way to see that an old URL takes three hops to reach its new home, which our redirects guide explains how to fix.

Link Redirect Trace from LinkResearchTools goes deeper on each hop, checking canonicals, robots.txt and noindex at every step, but its listing was last updated in June 2024. View Rendered Source, from Peg Leg Ltd, puts the raw HTML a server sends beside the page your browser builds after scripts run, with a difference view. That gap matters: many AI crawlers read raw HTML and skip JavaScript, as our page on JavaScript and AI crawlers explains. Its listing dates from June 2023, so treat it as a useful tool nobody is maintaining loudly.

Check My Links scans a page for broken and redirected links and highlights them in place. The listing is now offered by SelectorsHub Tech Private Limited, updated October 10, 2026, and also checks links inside Google Docs and Sheets. For a whole site, a crawler beats any extension; our broken links service and the technical SEO guide cover the full-site version.

Keyword and metric overlays, and the account each one wants

The second family of extensions paints numbers onto Google's results: search volume beside each query, authority scores beside each result. They are useful for a quick sense of demand. They are also where free tends to end.

SEO Minion is the cautionary tale. Its listing still describes hreflang validation and a Google location simulator, and now says it is available only to Keywords Everywhere Silver plan customers or higher, and the Keywords Everywhere pricing page calls it a separate add-on from the same team. Its rating sits at 1.6. MozBar's listing shows 1.3 from about 2,500 ratings, with a note that ratings may lag recent reviews; read the latest ones before you decide.

Remember what these numbers are. Search volumes are each vendor's estimate, and Domain Authority is Moz's own score, not something Google uses; see our page on domain authority. For keyword work beyond a glance, the keyword research tools guide compares the full products, and the Ahrefs review covers what the paid toolbar data comes from.

Tag Assistant, Wappalyzer and the Web Vitals extension Google retired

Google's Tag Assistant, with about 3 million users, shows the Google tags on a page in a side panel and starts a debug session for gtag.js and Tag Manager. It is the quickest answer to the question every owner eventually asks: is the tracking even firing? If it is not, our conversion tracking setup work is the fix. Wappalyzer, also at 3 million users, identifies the CMS, frameworks, analytics and ad tags a site runs, which is handy for sizing up a competitor's stack; the competitor analysis tools guide covers the rest of that job.

One famous extension is gone in all but name. Google's Chrome team ended support for the Web Vitals extension on January 13, 2025, when Chrome 132 merged its features into the live metrics view of DevTools' Performance panel, and said it would revoke the extension's field data key. If it is still in your toolbar, it is reporting from an old instrument. The Lighthouse extension, from Google, is still listed, though the same audit runs inside DevTools without installing anything. For what to do with the numbers, see our Core Web Vitals service.

What an SEO extension can read, and who it might tell

An SEO extension has to read pages to do its job. Many ask for that on every site you visit, which Chrome's help center describes as permission to "read and change all your data on websites you visit". That covers your email, your payroll provider and your clients' admin panels as much as the competitor page you meant to inspect.

Chrome itself now prunes the oldest code. Its Manifest V2 timeline records that every remaining Manifest V2 extension was removed from the Chrome Web Store on August 31, 2026. Google's Staying Safe with Chrome Extensions post adds that the extensions page warns about installed extensions suspected of malware, breaking store policy, unpublished, or missing privacy practices.

A ten-minute check before you click Add to Chrome

1. 1

   Read the Offered by line

   Match the developer to the company you think you are installing from, not just the name and the icon.

2. 2

   Open the privacy practices panel

   See which data types the developer discloses and whether a privacy policy is linked. If an on-page checker discloses web history or user activity, ask what it needs them for.

3. 3

   Check the last updated date

   Years without an update is not proof of danger, but it is a reason to prefer a maintained alternative.

4. 4

   Read the newest reviews, not the average

   Google's security team notes reviews change over time. A sudden run of complaints after an update is the warning a star average hides.

5. 5

   Limit site access

   In Chrome's extension details, set site access to When you select the extension, or On specific sites, so it reads only the pages you are inspecting. Chrome's site access help shows where.

6. 6

   Keep SEO work in its own Chrome profile

   Our practice: install SEO extensions in a separate profile that is not signed in to banking, payroll or client admin accounts. Remove anything unused for three months.

Built into Chrome already: the add-ons you can skip

Before you install anything, look at what Chrome ships. Type view-source: before any address to see the HTML the server sent, before scripts ran. Open DevTools and the Network tab, tick Preserve log, and every redirect hop appears with its status code. The Lighthouse panel runs the same audit as the extension. The Performance panel's live metrics replaced the Web Vitals extension.

DevTools' Network conditions panel lets you change the user agent string, which several extensions sell as a feature. A browser wearing a Googlebot user agent is still your browser, though. To see what Google saw, use URL Inspection in Search Console, which our Search Console guide walks through.

The safest SEO extension is the one Chrome already shipped with.

The free web tools fill most of the remaining gaps: the Rich Results Test, PageSpeed Insights and Search Console itself. Our free SEO tools guide lists them with their limits.

When the toolbar turns into a to-do list

Extensions are diagnostic. They show one page at a time, and they are very good at producing a list of things that look wrong. They do not tell you which of those things costs you customers, and they do not fix any of them. A site with a broken canonical on every product template needs a developer, not another icon.

For a whole-site view without installing anything, the free website audit checks speed signals, search basics, mobile, security and content and emails a PDF of fixes, and the website health check runs 25 checks on one URL in about ten seconds. When you would rather hand the list to someone, DataCram's SEO programs run month to month on a defined scope, from $625 a month, and the SEO pricing page shows where most local businesses land.