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 only.
- At least 300 rows to upload. LinkedIn recommends 10,000 or more contacts, since only a portion of any list typically matches to a real LinkedIn member, and a campaign needs at least 300 matched members before it can serve.
- Maximum file size 20MB, or 300,000 rows.
- Matching can take up to 48 hours.
Column template
Every row needs at least one matchable identifier: an email address, or a first name and last name pair, or a mobile device ID. Leave any other column blank rather than deleting it.Format rules
- Email can be uploaded as plain text or pre-hashed with SHA-256.
- Don’t rename, reorder, or remove any header from LinkedIn’s downloaded template, even for a column you’re leaving blank for every row.
Data and compliance rules
Official documentation
- Upload company and contact targeting lists for LinkedIn Ads
- Requirements for contact targeting lists in Campaign Manager
- LinkedIn Marketing Solutions and the GDPR