---
title: "Ad Observer – Chrome extension stats, history and permissions"
description: "2,000 users, rated 5.00 by 7 people. Version 3.2.13 (ea4c344), updated 2022-11-09. Requests 2 permissions."
url: "https://extensiontracker.com/extension/dafimblndlbfdhmdnefmmnjdpbbnflgd"
---

# Ad Observer

Live in the Chrome Web Store.

- Users: 2,000
- Rating: 5.00 from 7 ratings
- Last checked: 2026-09-26 23:27 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #14,553 of 264,703 live extensions
- Rank in Social Networking: #676 of 7,022

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

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

- Extension ID: `dafimblndlbfdhmdnefmmnjdpbbnflgd`
- Developer: [NYU Online Political Transparency Project Legacy](https://extensiontracker.com/developer/ud68577df4be80cfc2e007f7c76c216c1)
- Category: [Lifestyle › Social Networking](https://extensiontracker.com/category/lifestyle/social)
- First published: 2020-03-12
- Last updated: 2022-11-09
- Version: `3.2.13 (ea4c344)`
- Size: 521 KiB
- Minimum Chrome: 88
- Languages (3): Deutsch, English, español
- Website: `adobserver.org`
- Chrome Web Store: <https://chromewebstore.google.com/detail/ad-observer/dafimblndlbfdhmdnefmmnjdpbbnflgd>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Fdafimblndlbfdhmdnefmmnjdpbbnflgd>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-26 | 2,000 | 5.00 | 7 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-26.

## What it can access

From the extension's manifest, in plain language.

### Sites where it runs scripts

- `*://*.facebook.com/*`: facebook.com and its subdomains
- `*://www.youtube.com/*`: www.youtube.com

### Browser features

- `storage`: Save settings and data in your browser
- `unlimitedStorage`: Store more data than the usual limit

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 2026-09-26 23:27 UTC; next check around 2026-09-30.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “Ad Observer” (dafimblndlbfdhmdnefmmnjdpbbnflgd). Chrome Web Store data, last checked 2026-09-26. https://extensiontracker.com/extension/dafimblndlbfdhmdnefmmnjdpbbnflgd. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_dafimblndlbfdhmdnefmmnjdpbbnflgd,
  title   = {Ad Observer (dafimblndlbfdhmdnefmmnjdpbbnflgd)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-26},
  url     = {https://extensiontracker.com/extension/dafimblndlbfdhmdnefmmnjdpbbnflgd},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/dafimblndlbfdhmdnefmmnjdpbbnflgd>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Extension, developer and list pages come as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.