What is OctoCheck?
OctoCheck is a Chrome extension from Efrox LLC, a Florida company, launched on 12 October 2026. Click it on any page and it runs more than 100 checks across eight areas, including whether AI crawlers are allowed in by robots.txt, structured data, page structure, trust signals and rendering speed, then gives a score out of 100 and a plain-English fix for each problem.
It compares the raw HTML a crawler receives with the page your browser builds after running scripts, since many AI crawlers read only the first. Problems are sorted as Critical, Serious, Moderate or Notes, and the rules change with the page type, so a product page is not judged like an article.
The free audit runs entirely in your browser with no account and no limit. Pro adds 25 checks that use AI to read what the page actually says, judge its sources and look inside images, and lets you save, share and export reports.
How much does OctoCheck cost?
| Plan | Price | What you get |
|---|---|---|
| Free | Free | Unlimited in-browser scans, no account |
| Pro | $29/month or $249/year | 100 Pro scans a month, 25 AI checks, saved and shareable reports |
| Agencies and teams | Custom |
Free: unlimited in-browser scans, no account. Pro $29/month or $249/year: 100 Pro scans a month with 25 AI checks, saved and shareable reports, HTML, Markdown or PDF export; 7-day trial with a card. Agencies and teams by quote.
Is OctoCheck worth it?
You can rank well on Google and still never be quoted by ChatGPT or Perplexity. Often the reason is dull: your robots.txt blocks their crawlers, the text only appears after JavaScript runs, or the page has no structured data saying what it is.
OctoCheck finds those dull reasons. Open a page, click the extension, and it reports a score out of 100 with each problem ranked and explained. The most useful check compares the HTML a crawler downloads with the page you see, which catches the common case of an article that is blank to a bot.
The free version is the right way to build this. Every free check runs inside your browser, the privacy policy states that nothing about the page reaches the company, and there is no account or scan limit. That makes it safe to run on drafts and staging pages.
Pro is different, and the extension says so. A Pro scan sends the page and related material from the site to OctoCheck's servers, which pass it to AI providers such as OpenAI, Google and Anthropic, sometimes through a routing service. The company says it picks settings that exclude providers that keep or train on the content, and does not store what it analyses; it keeps the results. You get 100 Pro scans a month for $29, or $249 a year.
The catch: this is a new, small product. The Chrome Web Store listed 27 users and 4 ratings, version 1.3.0, on the day we checked, and the developer is registered as a non-trader, which the store warns means EU consumer rights do not apply to purchases. The website does not name its maker; only the privacy policy does. Several other Chrome extensions run similar checks, and none of them, OctoCheck included, can tell you whether an AI assistant actually cites you.
Our take: OctoCheck is a spirit level, not a surveyor. The free scan is worth keeping in the toolbar for every page you publish; paying for Pro makes sense only once the free checks pass and you want an opinion on the writing itself.
Where it earns its place
A freelance web developer handing over a client site
Make sure AI crawlers are not blocked before launch
Run the free scan on the staging pages; it stays in the browser, so unpublished pages are not sent anywhere, and the robots.txt and rendering checks catch the usual blockers.
A content lead at a 15-person software company
Find out why our guides never show up in Perplexity answers
Use the free scan for structure and schema gaps, then a Pro trial on the top ten guides for the AI checks on citation readiness and weak definitions; Pro is $29 a month for 100 scans.
A two-person SEO agency
Give clients a readable audit of their AI search readiness
Pro reports export as HTML, Markdown or PDF and share by public link; a bigger scan allowance for client work is quoted on request.
Before you commit
- Setup
- Install from the Chrome Web Store and click it on any page; free scans need no account. Pro needs a Google or GitHub sign-in and a card for the 7-day trial.
- Integrations
- Chrome only; reports export as HTML, Markdown or PDF, or copy as Markdown for an AI assistant.
- Data and privacy
- Free scans stay in your browser. Pro scans send the page and related site material to OctoCheck, then to providers such as OpenAI, Google and Anthropic; OctoCheck says it excludes any provider that would retain or train on the content and does not store what it analyses. Results are kept; saved reports stay readable for a year after Pro ends. Google Analytics keeps event data for 14 months. Operated by Efrox LLC, Florida. Which AI tools train on your data?
- Cost at scale
- Pro is $249 a year per seat for 100 Pro scans a month; more scans, devices and seats need a custom plan.
- Limits
- 100 Pro scans a month with no top-up until the next billing period; it audits one page at a time and does not track real AI citations.
What’s good
- Free scans run in your browser with no account and no limit
- Compares raw HTML with the rendered page, as an AI crawler sees it
- Each problem ranked by severity with a plain-English fix
- Rules adjust to the page type
- Pro content is not stored and is kept away from providers that train
What’s not
- 27 users and 4 ratings in the Chrome Web Store
- Developer listed as a non-trader, so EU consumer rights do not apply
- Pro scans send page content to AI providers
- Chrome only
- Checks readiness, not whether AI assistants actually cite you
Best for
Marketers, writers and site owners who want a quick, private check that AI search tools can read the pages they publish.
OctoCheck alternatives
OctoCheck: common questions
- Is OctoCheck worth it?
- OctoCheck's free audit is a sensible first look at whether AI search can see your page, and it never leaves your browser; the $29 Pro tier is harder to justify from a tool with 27 users. We rate it 3.6 out of 5.
- How much does OctoCheck cost?
- Free: unlimited in-browser scans, no account. Pro $29/month or $249/year: 100 Pro scans a month with 25 AI checks, saved and shareable reports, HTML, Markdown or PDF export; 7-day trial with a card. Agencies and teams by quote.
- What are the downsides of OctoCheck?
- 27 users and 4 ratings in the Chrome Web Store; developer listed as a non-trader, so EU consumer rights do not apply; pro scans send page content to AI providers; chrome only; checks readiness, not whether AI assistants actually cite you.
- Who is OctoCheck best for?
- Marketers, writers and site owners who want a quick, private check that AI search tools can read the pages they publish.
- How much does OctoCheck cost for a team or in production?
- Pro is $249 a year per seat for 100 Pro scans a month; more scans, devices and seats need a custom plan.
- Is OctoCheck safe for company data?
- Free scans stay in your browser. Pro scans send the page and related site material to OctoCheck, then to providers such as OpenAI, Google and Anthropic; OctoCheck says it excludes any provider that would retain or train on the content and does not store what it analyses. Results are kept; saved reports stay readable for a year after Pro ends. Google Analytics keeps event data for 14 months. Operated by Efrox LLC, Florida.
- What are the best OctoCheck alternatives?
- The closest alternatives we have reviewed are AEO Action, AnswerScout and Surfer.
Answers checked Nov 13, 2026.