How to export a completely transparent image?

Question

For a game I’m making, I need a completely transparent image, i.e., every pixel shall have zero opacity.
I tried to make a completely transparent image in Photoshop, and try to save it as a PNG, but it doesn’t save.
I get no error message; the file just does not appear in the desired folder.
When I export a different file with opaque pixels, it works.

I managed to find a blank image online the right dimensions, but I would like to know why I can’t just do this in Photoshop or how I would be able to do it.

Lucian · Answer

Here's what you should be doing:

Create a new document in Photoshop, give it any size you need and set the 'Background Contents' to 'Transparent'.
Go to 'File → Save for Web', choose the PNG-24 format and tick the 'Transparency' box.
Hit Save, give it a name and you're done.

How to export a completely transparent image?

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