I looked everywhere I could think of to find a way to use Bridge without any other external programs to watermark image files and had no luck. I knew it was possible. So I decided to create one myself.
I do not claim to be an expert at coding JavaScript. I'm adequate enough to code what I need but it usually isn't pretty so I'm sure there's a better way to code this.
As of now, it's a simple dialog interface with a few selections and settings that can be saved so you don't have to go through the process every time. It comes with 2 enabled blend modes (Normal and SoftLight) along with an opacity setting to blend the watermark to your image. Bridge does have some limitations with image manipulation so as of now you need to use a png file (alpha channel acceptable for transparent background) for the watermark file and jpg files for your image files. The output will also be in jpg format. I did include functions for 2 other blend modes (Darken and LinearLight) but those are not enabled since I haven't had time to completely test those out. With a little scripting knowledge and a few lines of code you can enable them and try them out if you want.
Comments and suggestions are welcome. I've been putting off some other stuff to get this far, though, so I may not get to this again any time soon. Anyone else who wants to modify this is more than welcome to. I have only tested this on Bridge CC 2019 but based on the code used, this should work back to at least CS3 but I make no guarantees on that.
To use this, go to the link, save that web page to your computer as "Watermark.jsx" and then copy that file to your Bridge Startup Scripts folder. Restart Bridge. You should see a new menu item under the Tools menu named "Watermark JPGs". Click on that and the dialog should open.
Adobe Bridge Watermark Plugin, JavaScript
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