Interest-Based Advertising Opt-Out
The interest-based advertising opt-out allowed sites to exclude themselves from Federated Learning of Cohorts (FLoC) cohort calculations using the "interest-cohort=()" permission policy. It is now deprecated and support for it has been removed from Chromium in February 2022.
According to our data, Interest-Based Advertising Opt-Out is the 8th most popular browser API on the web.
It has 1.4% of the browser API market share and is detected on 0.5% of all websites.
- 🏠 Website
- 🔗 Links
Wikipedia📊 Rankings and Market Share
- Browser APIs
- Rank: 8
- Market share: 1.4%
🏆 Interest-Based Advertising Opt-Out Awards
- ⭐ 4th most popular in Austria in the Browser APIs category.
- ⭐ 5th most popular in Belarus in the Browser APIs category.
- ⭐ 6th most popular in Germany in the Browser APIs category.
- ⭐ 6th most popular in Switzerland in the Browser APIs category.
- ⭐ 6th most popular in Russia in the Browser APIs category.
- ⭐ 6th most popular in Greece in the Browser APIs category.
- ⭐ 6th most popular in Taiwan in the Browser APIs category.
- ⭐ 6th most popular in Hungary in the Browser APIs category.
- ⭐ 6th most popular in Vietnam in the Browser APIs category.
- ⭐ 6th most popular in Croatia in the Browser APIs category.
⚡ Sites Using Interest-Based Advertising Opt-Out
We have data on 18,499 websites that use the Interest-Based Advertising Opt-Out browser API. Here is a list of some of the top ranked ones.
The highest rated site using Interest-Based Advertising Opt-Out is 
discord.com.
| # | Website | Rank | Country | Language |
|---|---|---|---|---|
| 1 | discord.com |
#46 | United States | English |
| 2 |  gov.uk |
#76 | United Kingdom | English |
| 3 | #202 | United States | American English | |
| 4 |  youradchoices.com |
#311 | United States | English |
| 5 |  gitlab.com |
#326 | United States | American English |
| 6 | #490 | France | American English | |
| 7 | #832 | Vietnam | Vietnamese | |
| 8 | web.archive.org | United States | English | |
| 9 | #1,332 | English | ||
| 10 | #1,399 | Slovakia | Slovak | |
| 11 | #1,677 | India | English | |
| 12 | #1,701 | United States | American English | |
| 13 | #1,705 | United States | American English | |
| 14 | #1,765 | United States | American English | |
| 15 | #1,909 | United Kingdom | British English | |
| 16 | #2,217 | English | ||
| 17 |  ubuntu.com |
#2,223 | United Kingdom | English |
| 18 | United States | American English | ||
| 19 | #2,447 | English | ||
| 20 | #2,481 | Germany | German |
📈 Usage Statistics
Most of the sites that use Interest-Based Advertising Opt-Out:
- are located in Germany
- have content in English
- use the .com domain extension
- fall into the Business category.
Most of the sites using Interest-Based Advertising Opt-Out are from Germany, the United States, and Austria.
- Germany 24%
- United States 11.1%
- Austria 6.8%
- United Kingdom 5.6%
- France 4.9%
- Switzerland 4.2%
- Netherlands 3.4%
- Russia 3.2%
- Italy 2.8%
- Other 34%
Most Interest-Based Advertising Opt-Out users speak English, German, or French.
- English 43.6%
- German 24.5%
- French 5%
- Spanish 3.6%
- Russian 3.5%
- Dutch 3%
- Italian 2.3%
- Chinese 1.7%
- Portuguese 1.2%
- Other 11.6%
The Interest-Based Advertising Opt-Out browser API is especially popular on .com, .de, and .org top-level domains.
- .com 25.8%
- .de 16.8%
- .org 8%
- .at 4.5%
- .ch 3%
- .net 2.5%
- .ru 2.4%
- .fr 2.1%
- .nl 2%
- Other 32.9%
The primary market segments for websites utilizing Interest-Based Advertising Opt-Out include business, marketing and merchandising, and education and reference.
- Business 18.9%
- Marketing/Merchandising 9.3%
- Education/Reference 8.9%
- Internet Services 5.2%
- Travel 4.1%
- Online Shopping 4%
- Blogs/Wiki 4%
- Software/Hardware 4%
- Health 3.9%
- Other 37.7%
🕵️ Similar Technologies
These are some of the best Interest-Based Advertising Opt-Out alternatives.
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💬 Frequently Asked Questions
Which country uses Interest-Based Advertising Opt-Out the most?
The majority of Interest-Based Advertising Opt-Out users are from Germany.
Who uses Interest-Based Advertising Opt-Out?
According to our data, Interest-Based Advertising Opt-Out is used on thousands of sites, including such established ones as discord.com, gov.uk, and duckduckgo.com.
Is Interest-Based Advertising Opt-Out used on government websites?
Overall, we found Interest-Based Advertising Opt-Out on 15 government sites in the United States.
Do academic institutions use Interest-Based Advertising Opt-Out?
Yes. The most notable of these is warwick.ac.uk. In total, we know of 40 academic websites in the United States that use Interest-Based Advertising Opt-Out.
How does Interest-Based Advertising Opt-Out compare to its competitors?
Interest-Based Advertising Opt-Out is a moderately popular browser API, ranking ahead of 10 other browser APIs we track.
What are the alternatives to Interest-Based Advertising Opt-Out?
Alternatives and possible competitors to Interest-Based Advertising Opt-Out may include Origin Trials, Web Storage, and 
Fetch.
🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- This report is based on the analysis of 3,814,833 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.