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Resource Hints: preconnect

To increase performance, gives the browser a suggestion to start the connection handshake DNS, TCP, TLS in the background. It is denoted by 'link rel= preconnect href= https://example-domain.com/ >.

Last updated on : 2025-11-11

Browser Versions

Edge

Firefox

Chrome

Safari

Opera

5.5 - 11

12 - 14

15 - 18

79 - 142

2 - 116

39 - 147

4 - 45

46 - 145

3.2 - 11

11.1 - 26.2

9.5 - 32

33 - 122

Fully Supported

Partially

No Support

Browser Compatibility

Resource Hints: preconnect on IE is not supported on any IE versions.

Resource Hints: preconnect on Edge is fully supported on 79-142, partially supported on 15-18, and not supported on 12-14 Edge versions.

Resource Hints: preconnect on Firefox is fully supported on 39-147, and not supported on 2-116 Firefox versions.

Resource Hints: preconnect on Chrome is fully supported on 46-145, and not supported on 4-45 Chrome versions.

Resource Hints: preconnect on Safari is fully supported on 11.1-26.2, and not supported on 3.2-11 Safari versions.

Resource Hints: preconnect on Opera is fully supported on 33-122, and not supported on 9.5-32 Opera versions.

Resource Hints: preconnect on Safari on iOS is fully supported on 11.3-26.1, and not supported on 3.2-11 Safari on iOS versions.

Resource Hints: preconnect on Android Browser is fully supported on 97-142, and not supported on 2.3-4 Android Browser versions.

Resource Hints: preconnect on Opera Mobile is fully supported on 64-80, and not supported on 10-12 Opera Mobile versions.

Resource Hints: preconnect on Chrome for Android is fully supported on all Chrome for Android versions.

Resource Hints: preconnect on Firefox for Android is fully supported on all Firefox for Android versions.

Resource Hints: preconnect on Samsung Internet is fully supported on 5-29, and not supported on 4-4 Samsung Internet versions.

Browser Support for Resource Hints: preconnect

Resource Hints: preconnect on Chrome

Resource Hints: preconnect on Safari

Resource Hints: preconnect on Firefox

Resource Hints: preconnect on Internet Explorer

Resource Hints: preconnect on Opera

Resource Hints: preconnect on Edge

References

Data sourced from

High

Overall Browser Compatibility Score

Note:Resource Hints: preconnect shows a browser compatibility score of 88. This is a collective score out of 100 to represent browser support of a web technology. The higher this score is, the greater is the browser compatibility. The browser compatibility score is not a 100% reflection for every browser and the web technology support. However, it does give you an estimate on how much you should rely on a particular web technology in terms of browser compatibility.

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