Unfortunately non-functional on the DRM-protected pdf I tried. No indication of failure in any regard, perhaps another person would find it useful. Also the thought it advertises itself and additionally splays DEMO across every page is gauche enough that it'd be a scam if it did work.

Needs to make clearer that the watermark is so intrusive.

As of right now, it's practially a sales pitch and not an add-on

doesnt mention that you need to pay for it in order to avoid a watermark. If you want to do that, fine, but at least make it clear to people before they download it.

Just straight up doesn't work. Gives invalid format errors.

If I could give this zero stars, I would. Don't attempt to use it to download a PDF. Not only will the size be obscenely large, but unless you pay you get a link burned into the top and bottom of each page for subscriptions.

This might have been TOLERABLE- except it is also an unusable document. The description talks about a watermark.

Hint to the creator: A burned in black image that completely blocks a good quarter of the screen reading "DEMO" is not a watermark. A watermark is a FAINT image that marks a document, but leaves the content readable.

Not only will I not pay you now, but I hope no one else ever does.