⚡ Browser APIs in Korea

Browser APIs (Application Programming Interfaces) are a set of functions that allow web developers to interact with the browser and system resources, providing features such as data storage, network requests, performance monitoring, graphics rendering, background tasks, and camera and microphone access.

Korea is an East Asian country with a population of around 52 million people.

According to our data, browser APIs are detected on 27.9% of websites from Korea.

⭐ Most Popular in 2026

The following chart shows the top browser APIs in Korea in 2026, based on market share.

The most popular is Web Storage, which dominates the market with a substantial 89.4% share.
It is followed by XMLHttpRequest with 43.4% and Fetch with 6.6%.

Web Storage 89.4%
XMLHttpRequest 43.4%
Fetch 6.6%
Navigation Timing 4.5%
Beacon API 2.8%
WebSocket 1%
WebGL 0.8%
Geolocation API 0.5%
PerformanceObserver 0.3%
Interest-Based Advertising Opt-Out 0.2%
Notifications API 0.1%
Origin Trials 0.1%
Speech Recognition API 0.06%
WebRTC 0.04%
📢 Speech Synthesis API 0.01%

🚀 Highlights

Here is a list of the top APIs that are more popular in Korea than worldwide.
Differences between global and country rankings are shown in parentheses.

6. WebSocket ^(-1)
7. WebGL ^(-2)
8. Geolocation API ^(-2)
11. Notifications API ^(-1)
12. Origin Trials ^(-3)
13. Speech Recognition API ^(-4)
15. 📢 Speech Synthesis API ^(-1)

✨ Best Browser APIs

Below is a more detailed list of 17 browser APIs used on sites from Korea, ranked by their market share.

Rank	Name	Market share
1	Web Storage Cambridge, Massachusetts, United States A browser API and client-side key-value database that allows websites to store persistent data on users' devices.	89.4%
2	XMLHttpRequest Cambridge, Massachusetts, United States A JavaScript API to create HTTP requests.	43.4%
3	Fetch Cambridge, Massachusetts, United States A modern XMLHttpRequest alternative for fetching network resources.	6.6%
4	Navigation Timing Cambridge, Massachusetts, United States A part of the Performance API that provides metrics related to navigation from one page to another.	4.5%
5	Beacon API Cambridge, Massachusetts, United States Used to send asynchronous and non-blocking requests to a web server.	2.8%
6	WebSocket Fremont, California, United States A communication protocol that enables persistent, full-duplex data exchange between a client and a server over a single TCP connection.	1%
7	WebGL A cross-platform, royalty-free open web standard for a low-level 3D graphics API based on OpenGL.	0.8%
8	Geolocation API Cambridge, Massachusetts, United States Allows web applications to retrieve the user's location, including latitude and longitude.	0.5%
9	PerformanceObserver Cambridge, Massachusetts, United States A part of the Performance API that is used to monitor performance measurement events.	0.3%
10	Interest-Based Advertising Opt-Out Allowed sites to exclude themselves from Federated Learning of Cohorts cohort calculations using the "interest-cohort=()" permission policy.	0.2%
11	Notifications API Cambridge, Massachusetts, United States Used to configure and display desktop notifications to the user.	0.1%
12	Origin Trials Mountain View, California, United States A way for developers to test and use experimental web platform features.	0.1%
13	Speech Recognition API A part of the Web Speech API that controls the speech recognition service.	0.06%
14	WebRTC A set of protocols and APIs that enable real-time communication natively from web browsers and and mobile applications.	0.04%
15	📢 Speech Synthesis API A part of the Web Speech API that controls the text-to-speech service.	0.01%
16	Screen Orientation API Cambridge, Massachusetts, United States Exposes the current type and angle of the device's screen orientation, and dispatches events when it changes.	0.01%
17	IndexedDB Cambridge, Massachusetts, United States A transactional NoSQL database system for the persistent storage of structured data inside a user's browser. Free	0.01%

👉 See Also

🌎 Browser APIs in other countries

Data is based on the analysis of 25,833 websites from Korea.
Statistics were last calculated on March 30, 2026.
For details, see our methodology and disclaimer.