How to preview ads with a User ID

Last updated: September 2025

Previewing your ad allows you to envision what your ad will look like once it's been published. You can preview your ad on a mobile device by generating a user ID (UID) in the settings of your account. Note: This feature is available for both Manual and Smart+ campaigns.

Before you begin

Your ad must be approved before you can preview it.

How to obtain a user ID (UID)

To obtain a UID:

  1. Open TikTok and go to your Profile page.

  2. Click the 3-line icon in the top-right corner.

  3. Scroll down until you see your app version number.

  4. Tap continuously on the version number and your UID will appear. A notification will alert you that the UID has been copied to your clipboard.


How to preview ads using a user ID

To preview ads using a UID:

  1. Go to the Campaign page.

  2. Go to your Ad list tab.

  3. Find the ad you want to preview, and click the 3-line icon in the top-right corner.

  4. Click Preview.

  5. Select the placement where you want to create a preview.

  6. Click User ID as the preview method.

  7. Enter your UID.

  8. Click Preview Now.

  9. Open the same app on your phone as the one you selected for your ad placement. Note: If you choose Automatic Placement, you can preview your ads in any of the apps available on TikTok Ads Manager.

  10. Refresh the home screen page of the app you opened on your phone and your ad preview will appear.


Previews last for 24 hours. Learn more about how to preview ads on TikTok Ads Manager.