What is a TikTok secUid?

A long string that identifies a TikTok account in technical tools and lookups. It usually starts with MS4wLjABAAAA.

How is a secUid different from a User ID?

The User ID is numeric. The secUid is a longer string. Use the identifier your tool requires.

Many scripts and tools look up posts, followers, and similar data with a secUid instead of a username.

Yes. Private accounts work too.

Check the username and try again. The account may have been renamed or removed.

For advanced users

Find the secUid linked to a TikTok username.

secUid value

Copy the account’s secUid for technical lookups and tools.
Works after username changes

The secUid stays with the account even if the @username changes.