
You should see something like the screenshot on the left.


Now, while your Photoshop extension is open, point your browser (either Chrome, Safari, Firefox…) to course use the port you’ve set in the XML file). This file needs to be formatted as an XML and should contain information about the ID of your extension, and the host/port (in the range 1024 - 65534) you want to connect through. debug file (you may need to make your OS show hidden files - download here an Automator app for OSX that toggles the visibility on/off). In the root folder of your extension, create a blank.

Since latest updates, Photoshop (and possibly other Adobe apps too) need remote connecting for debugging HTML Extensions - here’s a quick how-to.
