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Resource Hints: preconnect

Last updated on : 2023-03-20

Note:

Resource Hints: preconnect shows a browser compatibility score of 75. 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.

Overview

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/ >.

Code snippets

metadata-prefetch.html

Source:metadata-prefetch.html

Browser Compatibility

Resource Hints: preconnect on IE is fully supported on None of the versions, partially supported on None of the versions, and not supported on 5.5-11 IE versions.
Resource Hints: preconnect on Edge is fully supported on 79-111, partially supported on 15-18, and not supported on 12-14 Edge versions.
Resource Hints: preconnect on Firefox is fully supported on 39-70, partially supported on None of the versions, and not supported on 2-113 Firefox versions.
Resource Hints: preconnect on Chrome is fully supported on 46-114, partially supported on None of the versions, and not supported on 4-45 Chrome versions.
Resource Hints: preconnect on Safari is fully supported on 11.1-16.4, partially supported on None of the versions, and not supported on 3.2-11 Safari versions.
Resource Hints: preconnect on Opera is fully supported on 33-95, partially supported on None of the versions, and not supported on 9.5-32 Opera versions.
Resource Hints: preconnect on Safari on iOS is fully supported on 11.3-16.4, partially supported on None of the versions, and not supported on 3.2-11 Safari on iOS versions.
Resource Hints: preconnect on Android Browser is fully supported on 97-111, partially supported on None of the versions, and not supported on 2.1-4 Android Browser versions.
Resource Hints: preconnect on Opera Mobile is fully supported on 64-73, partially supported on None of the versions, and not supported on 10-12 Opera Mobile versions.
Resource Hints: preconnect on Chrome for Android is fully supported on 97-111, partially supported on None of the versions, and not supported on below 97 Chrome for Android versions.
Resource Hints: preconnect on Firefox for Android is fully supported on None of the versions, partially supported on None of the versions, and not supported on any of the Firefox for Android versions.
Resource Hints: preconnect on Samsung Internet is fully supported on 5-20, partially supported on None of the versions, and not supported on 4-4 Samsung Internet versions.

High

Browser Compatibility Score

Low

Browser Support For IE Versions

Fully

Partially

5.5-11

No Support

Edge

High

Browser Support For Edge Versions

79-111

Fully

15-18

Partially

12-14

No Support

Firefox

Low

Browser Support For Firefox Versions

39-70

Fully

Partially

2-113

No Support

Chrome

High

Browser Support For Chrome Versions

46-114

Fully

Partially

4-45

No Support

Safari

High

Browser Support For Safari Versions

11.1-16.4

Fully

Partially

3.2-11

No Support

Opera

High

Browser Support For Opera Versions

33-95

Fully

Partially

9.5-32

No Support

Safari on iOS

High

Browser Support For Safari on iOS Versions

11.3-16.4

Fully

Partially

3.2-11

No Support

Android Browser

High

Browser Support For Android Browser Versions

97-111

Fully

Partially

2.1-4

No Support

Opera Mobile

High

Browser Support For Opera Mobile Versions

64-73

Fully

Partially

10-12

No Support

Chrome for Android

High

Browser Support For Chrome for Android Versions

97-111

Fully

Partially

No Support

Firefox for Android

Low

Browser Support For Firefox for Android Versions

Fully

Partially

No Support

Samsung Internet

High

Browser Support For Samsung Internet Versions

5-20

Fully

Partially

4-4

No Support

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Last Modified date

2023-03-20