SeaText content duplicated on Thinkific after a sync: how to find and fix it

If SeaText content appears duplicated on Thinkific after a sync, the cause is almost always one of three things: two SeaText projects pointing at the same Thinkific site, the same JavaScript snippet pasted into Thinkific twice, or two sync schedules running at the same time. The fix is to identify which project owns the site, remove the extra code or schedule, and let one clean sync run.

Thinkific itself does not duplicate course content from a JavaScript tag. The duplication you see comes from SeaText pushing the same variant into the same page slot more than once. That happens when two installations overlap.

Why duplicate SeaText content shows up on Thinkific

SeaText installs on Thinkific by pasting a JavaScript snippet into the Site Footer Code field under Settings, then Code & Analytics. Once that snippet is live, SeaText reads the page and rewrites copy in the browser. If two snippets run on the same page, each one tries to write its own version of the headline, button, or section, and the second write often overlaps the first.

Three situations create this overlap:

• Two SeaText projects were linked to the same Thinkific URL, often after a test project was never deleted.
• The same JavaScript snippet was pasted into the Thinkific footer twice, sometimes after a theme or template change.
• Two sync schedules are active, so SeaText pushes variants from both projects on the same run.

Diagnose the duplication in the right order

Start with the cheapest check and move to the more specific ones. This order saves time because the first two causes cover most cases.

1. Open your Thinkific site in an incognito window and view the page source. Search for the SeaText snippet. Count how many times it appears.
2. Log in to SeaText and list every project. Check the website URL on each project card. More than one project pointing at the same Thinkific domain is the most common cause.
3. In SeaText, open each project and review its sync schedule. Two schedules firing at the same time will push overlapping variants.
4. Check the Thinkific footer code field for duplicate script tags, including any leftover code from a previous install.

Common mistakes that keep the duplication coming back

These are the patterns that turn a one-time fix into a recurring problem.

• Keeping a test project live. A test project created during setup is often left connected. It keeps syncing even after the main project is running.
• Pasting the snippet into multiple Thinkific themes. Thinkific lets you apply code at the site level and at the theme level. Code in both places runs twice.
• Re-running the link step after a domain change. When the Thinkific domain changes, a new project is sometimes created instead of updating the existing one.
• Two team members installing at the same time. Each person pastes the snippet without knowing the other already did.

Step-by-step fix for duplicated SeaText content on Thinkific

Work through these steps in order. Stop when the duplication clears.

1. Pick the project that should own the site. Choose the SeaText project that has the correct URL, language, and active variants.
2. Disable sync on every other project. In each extra project, turn off the sync schedule so it stops pushing variants.
3. Remove the extra JavaScript from Thinkific. Go to Admin Dashboard, then Settings, then Code & Analytics. Keep only one copy of the SeaText snippet in the Site Footer Code field. Click Save.
4. Clear the Thinkific cache. If you use a caching plugin or CDN, purge it so the old double-loaded page is not served.
5. Run a manual sync from the owning project. This pushes a clean set of variants through the single snippet.
6. Recheck the live page. Open the page in a fresh browser session and confirm the duplication is gone.

How to prevent the problem next time

One project per Thinkific site is the rule. Before any new install, confirm the existing project list in SeaText and decide whether to reuse or replace. When the Thinkific domain changes, update the URL inside the existing project rather than creating a new one. Treat the JavaScript snippet like a unique key: one site, one snippet, one project.

When the duplication is not from SeaText

Thinkific has its own course duplication feature for courses built with the Classic Course Builder. If the duplicated content is a full course, lesson, or page rather than a rewritten headline or button, the cause is inside Thinkific, not SeaText. In that case, review your course list and remove the duplicate course from the Admin Dashboard.

Key facts about SeaText on Thinkific

Limitations of this advice

This guide assumes the duplication is in rewritten copy such as headlines, buttons, or section text. It does not cover duplicated courses, lessons, or Thinkific pages, which are managed inside Thinkific. If the SeaText snippet is not visible in the page source at all, the install itself failed and the link step needs to be repeated.

Frequently asked questions

How do I know which SeaText project is the right one?

The right project is the one whose website URL matches your live Thinkific domain exactly, including the www prefix if you use one. It should also be the project where you actively edit variants.

Can I delete a SeaText project without breaking my Thinkific site?

Deleting a project stops it from syncing, but the JavaScript snippet stays in the Thinkific footer until you remove it. Remove the snippet first, then delete the unused project.

Why does the duplication only show on some pages?

SeaText only rewrites pages where variants are active. If two projects target different page sets, the overlap only appears on the pages both projects touch.

Do I need to reinstall SeaText after fixing the duplication?

Usually no. Removing the extra snippet and disabling the extra sync is enough. Only reinstall if the owning project loses its link, which you can confirm by checking whether your website name still shows next to the SeaText logo.

How long does a clean sync take to clear the old duplicates?

After you remove the extra snippet and purge any cache, the next manual sync from the owning project replaces the overlapping variants on the next page load. There is no separate cleanup step inside SeaText for this case.

What if the duplication comes back after a few days?

That usually means a second sync schedule is still active, or a team member re-pasted the snippet. Recheck the project list and the Thinkific footer code field.