🔍 Understanding the Problem
You have added the OTTO pixel script to your Shopify store, and when you inspect the page the code is clearly there. Yet the OTTO scan still reports that the pixel is not detected. This is one of the most common Shopify installation issues, and in almost every case the pixel itself is fine.
The real cause is usually bot-blocking. Shopify and many security or firewall services automatically block traffic that looks automated. Because the OTTO detection scan uses an automated crawler to visit your site, that crawler can be blocked before it ever reaches your page. When the crawler is blocked, it cannot see the pixel, so the scan reports it as missing even though the code is installed correctly.
✅ Confirm the Pixel Is Installed Correctly
Before changing any settings, quickly confirm the installation is valid:
- Open your live Shopify store in a browser.
- Right-click the page and choose View Page Source.
- Use your browser's find function (Ctrl+F or Cmd+F) to search for your OTTO pixel or the OTTO script identifier.
- Confirm the script appears in the source of your published theme, not just the theme editor preview.
If the script appears in the live page source, your installation is correct and the detection issue is almost certainly caused by bot-blocking.
🚫 Why Bot-Blocking Causes False Results
Automated protection can come from several places on a Shopify store:
- Shopify's built-in bot protection, which filters suspicious or automated visits.
- Third-party firewalls or security apps installed from the Shopify App Store.
- Content delivery or proxy services such as Cloudflare and other CDNs, or bot-management and DDoS-protection tools. Cloudflare in particular can serve a challenge or error page to our crawler even when your pixel or UUID was deployed successfully, so the scan never sees the installed code.
- Password-protected or unpublished stores that block all outside visitors, including crawlers.
Any of these can return an error page or an empty response to our crawler instead of your real page. The scan then sees no pixel and marks it as not detected.
🔧 How to Resolve It
Work through these steps to allow the OTTO crawler to reach your site:
- Remove the store password. In Shopify, go to Online Store, then Preferences, and make sure the password page is disabled so the store is publicly accessible.
- Review security and firewall apps. Temporarily disable or adjust any bot-protection, firewall, or rate-limiting apps and then run the scan again.
- Whitelist the OTTO crawler. If your security tool supports allow-lists, add an exception so automated requests from our crawler are not blocked. If you use Cloudflare, make sure the crawler is not caught by a firewall rule or bot-fight challenge. Our team can provide the crawler details you need through live chat.
- Check for aggressive rate limiting. Some tools block repeated visits from the same source. Loosen these limits so the scan can complete.
- Re-run the OTTO scan. After making changes, trigger a fresh scan rather than waiting for the next automatic check.
⏱️ What to Expect After Making Changes
Detection is not always instant. Once bot-blocking is removed and a new scan runs successfully, allow some time for the results to update. If the pixel is now reachable, the status will change to detected on the next completed crawl. If you installed the pixel through Google Tag Manager, detection can take roughly 10–15 minutes to register after a successful scan.
Keep in mind that detection can only succeed if the crawler can load your published page exactly as a normal visitor would. If the page still returns a security challenge, error page, or password prompt, the scan will continue to report the pixel as missing.
💡 Quick Checklist
- The pixel appears in the live page source.
- The store is published and not password-protected.
- No firewall, bot-protection, or security app (including Cloudflare) is blocking automated visits.
- Rate limits are not blocking repeated crawler requests.
- A fresh scan has been run after making changes.
Additional Notes
our engineering team is actively improving pixel-detection reliability across Shopify and other CMS platforms