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 1.5% 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: 1.5%
🏆 Interest-Based Advertising Opt-Out Awards
- 🥉 Third most popular in Austria in the Browser APIs category.
- ⭐ 4th most popular in Nepal 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 Greece in the Browser APIs category.
- ⭐ 6th most popular in Ireland in the Browser APIs category.
- ⭐ 6th most popular in Hungary in the Browser APIs category.
- ⭐ 6th most popular in Iran in the Browser APIs category.
- ⭐ 6th most popular in Taiwan 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 16,234 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 | #76 | United Kingdom | English | |
| 3 | #202 | United States | American English | |
| 4 |  youradchoices.com |
#311 | English | |
| 5 | gitlab.com | #326 | United States | American English |
| 6 | #490 | France | American English | |
| 7 | web.archive.org | United States | English | |
| 8 | #1,332 | English | ||
| 9 | #1,399 | Slovakia | Slovak | |
| 10 | #1,677 | India | English | |
| 11 | #1,701 | United States | American English | |
| 12 | #1,705 | United States | English | |
| 13 | #1,765 | United States | American English | |
| 14 | #1,909 | United Kingdom | British English | |
| 15 | #2,217 | English | ||
| 16 | ubuntu.com | #2,223 | United Kingdom | English |
| 17 | United States | American English | ||
| 18 | #2,447 | English | ||
| 19 | #2,481 | Germany | German | |
| 20 | #2,699 | France | English |
📈 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 22.9%
- United States 11.5%
- Austria 6.7%
- United Kingdom 5.7%
- France 5%
- Switzerland 3.9%
- Netherlands 3.7%
- Russia 2.9%
- Italy 2.9%
- Other 34.8%
Most Interest-Based Advertising Opt-Out users speak English, German, or French.
- English 44.9%
- German 22.7%
- French 4.7%
- Spanish 3.6%
- Dutch 3.4%
- Russian 3.4%
- Italian 2.4%
- Chinese 1.3%
- Polish 1.3%
- Other 12.3%
The Interest-Based Advertising Opt-Out browser API is especially popular on .com, .de, and .org top-level domains.
- .com 26%
- .de 15.6%
- .org 8.3%
- .at 4.5%
- .ch 2.7%
- .net 2.6%
- .nl 2.3%
- .ru 2.1%
- .fr 2%
- Other 33.9%
The primary market segments for websites utilizing Interest-Based Advertising Opt-Out include business, marketing and merchandising, and education and reference.
- Business 18.8%
- Marketing/Merchandising 9.4%
- Education/Reference 9.3%
- Internet Services 5.4%
- Software/Hardware 4.2%
- Blogs/Wiki 4.1%
- Health 3.8%
- Online Shopping 3.8%
- Non-Profit/Advocacy/NGO 3.6%
- Other 37.6%
🕵️ 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 18 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 34 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 9 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 
XMLHttpRequest.