Plerdy SEO Analyzer vs SEO Pro Extension (2026): which should you pick?
As of Oct 23, 2026, Plerdy SEO Analyzer and SEO Pro Extension share a 3.0 GPA, both are free, so the choice depends on which features you need.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
They get the same grade on all five counts.
Price, platforms and features side by side. The table says where each price was read and when.
SEO Pro Extension
Free Chrome and Firefox extension for on-page SEO checks
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 SEO Pro Extension if
- Fits if you size up a prospect's site in a few clicks during an audit
- Works for checking whether a backlink on a page is followed
Look elsewhere if
- Not for you if you want keyword, ranking or backlink data, as it has none
- Watch out: Core Web Vitals are mobile field data only, and pages without enough Chrome data show site-wide figures or nothing
- Too light for whole-site audits, since it checks one page at a time
- Skip it if you browse in Safari or Edge, as only Chrome and Firefox are listed
- Watch out: the store shows the last update as November 20, 2024, and the developer hasn't identified itself as a trader, so EU consumer rights don't apply
How we grade them
| 3.0GPAPlerdy SEO AnalyzerVery good | 3.0GPASEO Pro ExtensionVery 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, and the vendor's FAQ says it needs no subscription and will never ask for payment; donations are optional. |
| 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: all seven tabs and every export, with nothing held back. |
| 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. | CTitle, description, canonical, robots, word count, mobile Core Web Vitals, status and redirects, a heading tree, links with nofollow marked, alt text, schema types and social preview, with CSV exports. The gap the listing names: no keyword, ranking or backlink data. |
| 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: the icon itself flags noindex pages and canonicals pointing elsewhere. |
| Platforms and integrations | CChrome only, so computers only, with no integrations listed. | CChrome and Firefox, so computers only, with Chrome UX Report data the one thing it pulls in. |
| Best for | a scored on-page audit of one page | on-page checks in seven tabs |
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 SEO Pro Extension. 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. SEO Pro Extension has no paid plan and scores 2.3.
On this chart the two sit in the same place: the same score 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 SEO Pro Extension 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.
In commonFree planBrowser extensionSite auditSchema markupPage speed
At a glance
| Plerdy SEO Analyzer | SEO Pro Extension | |
|---|---|---|
| Pricing | Free | Free |
| Starts at | Free | Free |
| Free plan | The extension is free; Plerdy's paid analytics plans are a separate product. | The vendor's FAQ says the extension is 100% free, needs no subscription and will never ask for payment; donations are optional. |
| Free trial | None listed | None listed |
| Browser extension | ||
| Made by | Plerdy | MarketingSyrup |
| Price read from | plerdy.com | marketingsyrup.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.
SEO Pro Extension
- It checks one page at a time and has no keyword, ranking or backlink data.
- Core Web Vitals are mobile field data only; pages without enough Chrome data show site-wide figures or nothing.
- It is available for Chrome and Firefox only; the Chrome Web Store shows its last update as November 20, 2024.
- The Chrome Web Store notes the developer has not identified itself as a trader, so EU consumer rights do not apply.
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.
SEO Pro Extension
- Overview tab
- Title, meta description, canonical, meta robots, language, word count and counts of headings, images and links, with links to robots.txt and the sitemap.
- Core Web Vitals
- Shows LCP, INP and CLS from Chrome's user experience data for mobile, falling back to whole-site figures when the page has none.
- Status codes and redirects
- The icon shows the page's HTTP status, and the Status tab shows redirect chains and how http/https and www versions are handled.
- Headings, links and images
- A color-coded heading tree, internal and external links with anchor text and nofollow highlighting, and image alt text, each exportable to CSV.
- Schema tab
- Lists the structured data types and entities on the page, including types such as Organization and Person that do not produce rich results.
- Social preview
- Shows the Open Graph image, title and description a page will use when shared on networks such as LinkedIn and X.
Plans
Plerdy SEO Analyzer
Free$0
Every check in the extension, including the SEO score and AI tips.
SEO Pro Extension
Free$0
All seven tabs and every export, free for Chrome and Firefox, with an optional donation link.
Common questions
Which is cheaper, Plerdy SEO Analyzer or SEO Pro Extension?
As of Oct 23, 2026, both Plerdy SEO Analyzer and SEO Pro Extension are free to use.
Which has a free plan, Plerdy SEO Analyzer or SEO Pro Extension?
As of Oct 23, 2026, both Plerdy SEO Analyzer and SEO Pro Extension have a free plan.
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- SEO Pro Extension vs META SEO inspector
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.