Why are more TikTok tools using User IDs instead of usernames?

xiayu-tk

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I've noticed that many TikTok tools now ask for a User ID (UID) instead of a username.


At first I thought it was unnecessary, but after working with multiple TikTok accounts, it actually makes sense.


Here are a few reasons:


  • Usernames can be changed.
  • A UID stays the same.
  • It's more reliable for data collection and automation.
  • Many APIs and analytics tools identify accounts by UID rather than username.

If you're doing influencer research, TikTok Shop, or managing multiple accounts, using the UID can avoid a lot of issues when usernames change.


I'm curious how everyone here handles this.


  • Do you look up the UID manually?
  • Do you use an online tool?
  • Or do you get it through an API?

I'd love to hear what workflow everyone is using.
 
UIDs are more reliable because they don't change when a creator updates their username, making them a stable identifier for analytics and account management. If I need a UID, I typically use TikTok's official developer resources or tools that provide it legitimately rather than relying on usernames alone.
 
Usernames change all the time but the UID stays consistent which makes automation and tracking much easier.
 
i personally just map uid once and then stick with it for automation/analytics so it doesn’t break later.
 
That's right, whoever the user is usually unique. It makes it easy to update and identify who you are.
 
I mostly grab UIDs via free online lookup tools, it’s quick and totally enough for daily multi-account management.
 
I prefer using the UID whenever possible.
For a few accounts I'll grab it manually, but at scale an API or a trusted management tool saves a lot of time.
 
using the uid is definitely more reliable since usernames can change while the uid stays the same

for most workflows i pull it through the platform or an api when available instead of relying on manual lookups.
 
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