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Cross-document messaging

If you want to send a message or update data on one page to another on the same domain, you don't need to write any code; just use postMessage.

Last updated on : 2025-11-11

Browser Versions

IE

Edge

Firefox

Chrome

Safari

Opera

5.5 - 7

8 - 11

12 - 142

2 - 2

3.6 - 147

4 - 145

3.2 - 3.1

4 - 26.2

9 - 9

9.5 - 122

Fully Supported

Partially

No Support

Specifications

HTML Standard # dom-window-postmessage-options-dev

Syntax

targetWindow.postMessage(message, targetOrigin) targetWindow.postMessage(message, targetOrigin, transfer)

Browser Compatibility

Cross-document messaging on IE is partially supported on 8-11, and not supported on 5.5-7 IE versions.

Cross-document messaging on Edge is fully supported on all Edge versions.

Cross-document messaging on Firefox is fully supported on 3.6-147, and not supported on 2-2 Firefox versions.

Cross-document messaging on Chrome is fully supported on all Chrome versions.

Cross-document messaging on Safari is fully supported on 4-26.2, and not supported on 3.2-3.1 Safari versions.

Cross-document messaging on Opera is fully supported on 9.5-122, and not supported on 9-9 Opera versions.

Cross-document messaging on Safari on iOS is fully supported on all Safari on iOS versions.

Cross-document messaging on Android Browser is fully supported on all Android Browser versions.

Cross-document messaging on Opera Mobile is fully supported on all Opera Mobile versions.

Cross-document messaging on Chrome for Android is fully supported on all Chrome for Android versions.

Cross-document messaging on Firefox for Android is fully supported on all Firefox for Android versions.

Cross-document messaging on Samsung Internet is fully supported on all Samsung Internet versions.

Browser Support for Cross-document messaging

Cross-document messaging on Chrome

Cross-document messaging on Safari

Cross-document messaging on Firefox

Cross-document messaging on Internet Explorer

Cross-document messaging on Opera

Cross-document messaging on Edge

References

Data sourced from

100

High

Overall Browser Compatibility Score

Note:Cross-document messaging shows a browser compatibility score of 100. 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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