Free SEO Chrome extension
The Join Postly SEO extension is a free on-page SEO checker for Chrome and Edge. Click the toolbar button on any page to see its title, meta description, headings, links, images, schema, Open Graph tags, AI readiness and load speed. It runs locally and collects nothing. It isn't in the Chrome Web Store yet.
Who is Chrome extension for?
- SEOs who check pages all day
- Writers checking headings and meta before publishing
- Developers checking schema, Open Graph and Core Web Vitals on a live page
What does Chrome extension do?
Page, content and links
Title and meta length, canonical, robots, hreflang, H1–H6 outline, word count, readability, internal and external links with rel attributes, and an optional broken-link check.
Images, social and schema
Missing alt text and sizes, Open Graph and X tags with a link preview, and JSON-LD validation for common types.
AI readiness and speed
Answer-first headings, author and dates, plus TTFB, FCP, LCP and CLS from your browser's own Performance API.
Private by design
No analytics, no account, no tracking. It reads only the tab you click, only when you click, and can open the page in Postly Rank.
How Chrome extension works
Install the extension
Coming soon to the Chrome Web Store.
Click the toolbar button
On any page you want to check.
Read or export the report
Highlight issues on the page, export JSON or CSV, or open the page in Postly Rank.
Where does the data come from?
Everything is read from the page in your own browser. Nothing is sent to Join Postly.
Learn more about our crawler on the JoinPostlyBot page.
Chrome extension: Free vs Rank Pro vs Rank Agency
Free forever, or Rank Pro at $15/month and Rank Agency at $49/month (USD).
| Chrome extension | Free | Rank Pro | Rank Agency |
|---|---|---|---|
| Price | Free | Free | Free |
The extension is free for everyone and doesn't need a Postly Rank plan. Limits are per workspace per day unless stated. Rank Pro and Rank Agency are in early access: ask at info@joinpostly.com.
Chrome extension FAQ
When will the Join Postly SEO extension be available?
It's built and is being prepared for the Chrome Web Store. This page will link to the store listing once it's published. Ask at info@joinpostly.com to hear when it's live.
What permissions does the Join Postly SEO extension need?
Only activeTab and scripting, so it can read the tab you click on at that moment. The broken-link check asks for permission for just the sites it checks and removes it afterwards.
Does the SEO extension send my browsing data to Join Postly?
No. The checks run in your browser and nothing is collected: no analytics, no account and no storage. Links to open a page in Postly Rank are plain links that only work when you click them.
Related Postly Rank tools
Use Postly Rank in the browser today
Postly Rank works with every Join Postly plan, including Free. No credit card needed.