🆚 IAB TCF vs. JSON

Compare technologies based on real-world usage data *
IAB TCF
JSON

Type

Standard
Standard

About

The Transparency & Consent Framework (TCF) is an open-source industry standard developed by IAB Europe that helps companies comply with GDPR and ePrivacy requirements when processing personal data in digital advertising ecosystems.

It defines technical specifications and policies for collecting and communicating user consent choices, standardizes how these preferences are shared between publishers, advertisers, and CMPs, maintains a centralized list of approved vendors, and ensures transparency by giving users clear control over how their data is used.

JSON (JavaScript Object Notation) is a lightweight, language-independent data exchange format derived from JavaScript and used to structure and transmit data between systems.

It represents data as key-value pairs and ordered arrays, supports various data types, and is widely used in web APIs, configuration files, and data storage.

Headquarters

Brussels, Belgium

Website

iabeurope.eu #636,075
json.org #518,939

Categories

Standards › Rank #18
Standards › Rank #4

Popularity

Determined by the number of sites using each technology.

JSON is 32 times more popular than IAB TCF.
Total websites

Market share

Standards

Popularity by country

Determined by the number of sites detected from each country.

JSON is more popular in the United States, Germany, and the United Kingdom, while IAB TCF is more popular in the British Virgin Islands.
United States
Germany
United Kingdom
France
Spain
Italy
Australia
Netherlands
Japan
Canada

Awards

Popularity by domain category

Determined by the number of sites in each category.

JSON is more popular than IAB TCF in all market segments.
Business
Marketing/Merchandising
Online Shopping
Blogs/Wiki
Education/Reference
Internet Services
Entertainment
Travel
Health
Non-Profit/Advocacy/NGO

Top sites

Top-ranked sites that use these technologies.

Name
Rank
#16
#67
#78
#104
#112
View more ➝
Name
Rank
#2
#5
#7
#8
#13
View more ➝

See also

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When making your decision, it is better to rely on data that cannot be falsified.
Our service evaluates the popularity of technologies by the number of websites using them.

Statistics were last calculated on .
For details, see our methodology and disclaimer.