Plerdy SEO Analyzer vs SEOquake (2026): which should you pick?
As of Oct 24, 2026, we pick SEOquake: it is first in our ranking of SEO browser extensions, and it grades higher too, 3.2 against 3.0.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
SEOquake grades higher on features. They get the same grade on value for money, the free plan, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
SEOquake
Free Semrush extension for page audits and metrics in Google results
Free
Which one is for you
Pick Plerdy SEO Analyzer if
- Fits if you want a page's tags, readability and keyword use checked before you publish it
- Works for developers looking for slow scripts, styles and images on a single page
Look elsewhere if
- Too light for whole-site audits, as daily site checks and Search Console alerts are Plerdy's separate SEO Checker
- Skip it if you want search volumes, rankings or backlinks, as none are on record
- Not for you if you browse in Firefox, Safari or Edge, as it's listed for Chrome only
- Watch out: the developer hasn't identified itself as a trader, so EU consumer rights don't apply
Pick SEOquake if
- Fits if you check a rival's traffic and backlink figures while you browse
- Works for reading Semrush figures for every result on a Google search page
Look elsewhere if
- Watch out: the traffic and backlink figures are Semrush estimates, not data from your own analytics
- Skip it if you use Firefox, where the version is 3.9.9 from December 2022 against 4.3.0 on Chrome
- Tight if you won't make a Semrush account, as Authority Score, referring domains and Traffic Analytics need one
- Not for you if you want the interface in a language other than English
How we grade them
| 3.0GPAPlerdy SEO AnalyzerVery good | 3.2GPASEOquakeVery good | |
|---|---|---|
| Value for money | AFree from Plerdy, with every check in the extension, the 0 to 100 score and the AI tips included. Plerdy's paid analytics plans are a separate product. | AFree from Semrush, with no paid tier for the extension. Core reports and the built-in Semrush figures work with no account at all. |
| Free plan and trial | AFree outright: the audit, score, AI suggestions, text analysis, link and image checks and timings, with nothing held back. | AFree outright. Authority Score, referring domains and Traffic Analytics need a Semrush account, but a free one is enough. |
| Features | CTitle, description, H1, robots, canonical and hreflang, a 0 to 100 score with AI tips, readability and keyword share, links, alt text, Open Graph, schema, load timings and technology detection. The gap the listing names: one page at a time, with site audits a separate product. | BTitle, meta, headings, canonical and indexability with an audit, Semrush figures under every Google result in any country, AI Overview sources, links with follow status and HTTP codes, keyword density and domain comparison. That covers the whole job here. |
| Ease of use | BNo rating on record, but nothing to set up: install it, open a page and click the icon for the audit. | BNo rating on record, but nothing to set up: Quick View works on the first page you open, with no account. |
| Platforms and integrations | CChrome only, so computers only, with no integrations listed. | CChrome and Firefox, so computers only, and the Firefox version lags far behind. It works on Google Search and draws on Semrush, and nothing else is listed. |
| Best for | a scored on-page audit of one page | Semrush figures on Google results and pages |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Plerdy SEO Analyzer and SEOquake. How we grade
Price against what you get
Plerdy SEO Analyzer has no paid plan and scores 2.3 out of 4 on features, ease of use and platforms. SEOquake has no paid plan and scores 2.7.
SEOquake scores higher for the same starting price. Of the other SEO browser extensions on the chart, none scores higher than Plerdy SEO Analyzer for less, and none scores higher than SEOquake for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Plerdy SEO Analyzer also covers content optimization, schema markup and page speed.
- SEOquake also covers backlink analysis and AI search visibility.
In commonFree planBrowser extensionSite audit
At a glance
| Plerdy SEO Analyzer | SEOquake | |
|---|---|---|
| Pricing | Free | Free |
| Starts at | Free | Free |
| Free plan | The extension is free; Plerdy's paid analytics plans are a separate product. | The extension is free and its core reports work without an account; connecting a free Semrush account adds Authority Score, referring domains and Traffic Analytics. |
| Free trial | None listed | None listed |
| Browser extension | ||
| Made by | Plerdy | Semrush Inc. |
| Price read from | plerdy.com | chromewebstore.google.com |
| Checked | Oct 23, 2026 | Oct 23, 2026 |
Worth knowing
Plerdy SEO Analyzer
- It audits the page in front of you; daily site audits and Search Console alerts are part of Plerdy's separate SEO Checker.
- It is listed for Chrome only.
- The Chrome Web Store notes the developer has not identified itself as a trader, so EU consumer rights do not apply.
SEOquake
- Authority Score, referring domains and Traffic Analytics need a Semrush account, though a free one is enough.
- The Firefox version is much older: 3.9.9, last updated in December 2022, against 4.3.0 on Chrome in October 2026.
- Its traffic and backlink figures are Semrush estimates, not data from your own analytics.
- The Chrome Web Store lists the interface in English only.
Key features
Plerdy SEO Analyzer
- On-page audit and SEO score
- Checks title, description, H1, robots, canonical and hreflang tags, then rates the page from 0 to 100 and lists what to fix.
- AI suggestions
- Gives AI-generated tips with examples for meta tags, headings, keyword placement, readability and internal links, plus E-E-A-T and AEO checks.
- Text and keyword analysis
- Counts words and characters, keyword and stop-word share, uniqueness, sentence length and Flesch reading ease; click a keyword to highlight it on the page.
- Links, images and headings
- Reports dofollow, nofollow and duplicate links with their anchors, flags images with no alt text, and maps the H1 to H6 structure.
- Open Graph and schema markup
- Shows Open Graph and X (Twitter) card tags and the structured data a page carries, to check social previews and rich results.
- Performance and technologies
- Lists load time, DNS, TCP, TTFB and DOM timings, flags JS, CSS and image files slower than 300 ms, and detects analytics tools, pixels, CMS and frameworks.
SEOquake
- Quick View and page audit
- Shows the title, meta description, headings, canonical, indexability and word count, then audits content, mobile and technical issues such as hreflang and alt text.
- SERP Overlay
- Puts position numbers and Semrush metrics under each organic Google result, in the country and language you pick, with CSV export.
- AI Overview sources
- Shows which pages a Google AI Overview cites and compares them by Semrush traffic and backlink figures.
- SEObar
- A toolbar on the page that keeps chosen metrics, such as traffic estimates and backlink counts, in view while you browse.
- Link and keyword density reports
- Lists internal and external links with anchor text, follow status and HTTP codes, and counts phrases of one to four words.
- URL and domain comparison
- Compares several URLs or domains side by side on Semrush traffic, backlink and other metrics; audits export as PDF.
Plans
Plerdy SEO Analyzer
Free$0
Every check in the extension, including the SEO score and AI tips.
SEOquake
Free$0
Quick View, Full Report, SERP Overlay, SEObar and the built-in Semrush metrics, with more metrics after a free Semrush sign-in.
Common questions
Which is cheaper, Plerdy SEO Analyzer or SEOquake?
As of Oct 23, 2026, both Plerdy SEO Analyzer and SEOquake are free to use.
Which has a free plan, Plerdy SEO Analyzer or SEOquake?
As of Oct 23, 2026, both Plerdy SEO Analyzer and SEOquake have a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.