This isn’t legal advice. Confirm data rights, consent, and current policy requirements with your legal or privacy team before uploading customer data to any ad platform.
File format
- CSV or TXT file, under 1GB, with at least 1,000 entries.
- One header row naming the identifier in the file, and one identifier per row below it.
- TikTok’s customer file takes a single identifier type per file (email, phone, or mobile advertiser ID), unlike Meta or Google, which accept several identifier columns combined in one file. To match on more than one identifier, upload a separate file per type.
Column template
Format rules
TikTok accepts MD5 or SHA-256 pre-hashed values, or raw values, which TikTok hashes automatically on upload. If you pre-hash, normalize the value (lowercase, trimmed) first.
Data and compliance rules
Official documentation
- How to create a Custom Audience with a customer file
- About Customer File audiences
- About guidelines for customer files
- Advertiser tools and related terms