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FirstID

Company website
Last update : September 22, 2026
Tool descriptionNot provided — is this listing about you? See what you can complete.

Results in the Tech Stack study

Results come from publishers’ answers and cannot be edited by the vendor. Learn more

Alternative IDs
42 %Adoption rate · of respondents
6.4/10Satisfaction
Top 3 most used

What its users say (1)

8/10

“ID persistence; ID shared across a pool of publishers AND advertisers.”

Tech Stack 2026

Anonymised comments from study respondents.

Case studyNot provided — is this listing about you? See what you can complete.

Is this listing about you? — FirstID

Write to us to complete this listing: description, case study, link to your website, logo. Scores, adoption rates and reviews come from the study and cannot be changed.

Adoption rates and satisfaction scores come from the Tech Stack study, an independent study run with the Sciences Po School of Journalism. Adoption is the share of questionnaire respondents citing the tool; satisfaction is the average score out of 10 given by its users. No score is published below 3 responses. Vendors cannot influence these results: they can only complete the presentation of their tool (description, case study, website, logo).

Download the study 2026