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Editorial Team
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Asked: 2026-05-31T13:41:45+00:00

i want to develop an extension in Chrome that will display an image above

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i want to develop an extension in Chrome that will display an image
above an html element that when clicked will launch an external Windows app.

Is it necessary to develop a NPAPI Plugin for such a thing?

Is there a simpler way to call an external app with Chrome?

Do you know any good and simple tutorials for NPAPI Plugin Development?

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1 Answer

  1. Editorial Team

    The Windows app can register a custom protocol handler. You can register a custom protocol for the app that will pass the image URL to the app. E.g. myapp://example.com/img.png or something similar.

    A good example of this is iTunes. It registers itms and online app pages offer to open iTunes to the app specified. The URL opened is itms://itunes.apple.com/us/app/google+/id447119634?mt=8.

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