Ad Observer icon

Ad Observer

by NYU Online Political Transparency Project Legacy · adobserver.org · Social Networking
FeaturedEstablished publisherManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

A browser extension to share data about your social feed with researchers and journalists to increase transparency.

Users
2,000
0 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
7
0 in 30 days
Store rank
#21K
#18K among extensions
Version
3.2.13 (ea4c344)
updated 9 Nov 2022

Users

monthly, 3 years
6001,8003,000Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 2,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
258Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 7 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Ad Observer

This tool allows you to contribute data about the ads you're shown to further the understanding of researchers, journalists, and the public of online political advertising and how personal data is used to target you with ads. Ad Observer is offered by the Online Political Transparency Project of New York University. This extension was developed in partnership with the Algorithmic Transparency Institute.

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days0+0.0%00.00
6 months0+0.0%00.00
1 year0+0.0%00.00

Chrome Web Store search rankings

Where Ad Observer appears when people search the store, with the 30 day change
Search phrasePosition30 days
ad#47+14

Version history

21 versions recorded
3.2.13 (ea4c344)8 Nov 2022
3.2.12 (66eab44)13 Sep 2022
3.2.1213 Sep 2022
3.2.825 Mar 2022
3.2.722 Mar 2022
3.2.61 Mar 2022
3.2.51 Feb 2022
3.2.417 Oct 2021

Details

Category
Social Networking
First seen
24 Jul 2020
Size
521 KB
Languages
de, en, es
Pricing
Free
Privacy policy
adobserver.org
Extension ID
dafimblndlbfdhmdnefmmnjdpbbnflgd

Permissions and risk

Minimal riskimpact 1, likelihood 0
Permissions
storageunlimitedStorage

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