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Free Chrome extension

The free SEO checker and nofollow link highlighter

Check any page's SEO in one click: links, meta tags, headings, images, schema, Open Graph and AI readiness. No account, nothing tracked.

In review on the Chrome Web StoreOr use the web dofollow checker ›
DodoLaunch SEO extension highlighting dofollow and nofollow links on a page, with the Links tab open

What the extension checks

The DodoLaunch SEO extension is a free Chrome extension for founders, marketers and SEO specialists. Click its icon on any page to see the page's meta tags, indexability, headings, links, images, structured data, social tags and AI crawler rules in eight tabs, and to highlight every dofollow and nofollow link on the page itself.

Nofollow and dofollow link checker

Highlight every link on a page: green for dofollow, red for nofollow, amber for sponsored and UGC. Add your domain once and see if the page links back to you, with which anchor text and link type. Export all links as CSV.

Nofollow and dofollow link checker: DodoLaunch SEO extension

Meta tags and indexability

Title and meta description with character counts, canonical URL, robots meta tag and X-Robots-Tag header, HTTP status, word count and a Google search result preview. See at a glance whether a page can be indexed.

Meta tags and indexability: DodoLaunch SEO extension

AI search readiness (llms.txt)

Checks for llms.txt and reads robots.txt to show whether GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot, Google-Extended and other AI crawlers can reach the site. Few SEO extensions check this yet.

AI search readiness (llms.txt): DodoLaunch SEO extension

Open Graph and Twitter card checker

Checks og:title, og:description, og:image, og:url, og:type and twitter:card, and previews the share card people see on LinkedIn, Facebook, Slack and X.

Open Graph and Twitter card checker: DodoLaunch SEO extension

Headings and schema markup

The H1 to H6 outline with warnings for a missing or duplicate H1 and skipped levels, every JSON-LD type on the page, invalid structured data, and one click to Google's Rich Results Test.

Headings and schema markup: DodoLaunch SEO extension

How to use it

  1. Add the extension to Chrome and pin it to your toolbar.
  2. Open any website and click the DodoLaunch icon.
  3. Start on Overview, then use Links, Headings, Images, Schema, Social and AI & crawl for detail.
  4. Checking backlinks? Enter your domain in settings, then open each directory listing and look at Links.

Private by design

The extension runs entirely in your browser and reads a page only when you click its icon. It sends nothing to DodoLaunch or anyone else, has no account and no tracking, and asks for just three permissions: activeTab, scripting and storage. Read the full privacy policy.

Need more than one page? The free dofollow checker, Open Graph preview and AI visibility check run on the web, and Launch OS checks every directory link you've built.

Frequently asked questions.

Yes. It's free, with no account, no limits and no upsell inside the extension.

Open the page, click the DodoLaunch extension icon, go to Links and press Highlight links on page. Dofollow links get a green outline, nofollow links red, and sponsored or UGC links amber. The Links tab also lists every link with its type.

Open the extension's settings and enter your domain once. On any page, the Links tab then shows whether that page links to your domain, the anchor text, and whether the link is dofollow or nofollow. It's the quickest way to verify a backlink from a directory listing.

llms.txt is a short plain-text guide to a website for AI assistants such as ChatGPT and Claude. The extension shows whether a site has one, and whether its robots.txt blocks the crawlers that AI search engines use.

No. It runs in your browser, reads a page only when you click the icon, and sends nothing to DodoLaunch or anyone else. It asks for three permissions: activeTab, scripting and storage.

Google Chrome, and Chromium-based browsers that install from the Chrome Web Store, such as Edge, Brave, Arc and Opera.

Check your first page in one click.

Free, private, and made by DodoLaunch, the launch platform that shows founders what their launch actually did.

In review on the Chrome Web Store

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