I recently needed to apply a watermark/copyright message to 100’s of images site-wide, so I added a new feature to the Image Sizer plugin; the extra code works by merging a .png overlay into the cached images. This means you can use drop-shadows, logos, transparency etc. - works a treat.

I know a few other people have been asking about this. Attached are sample images showing how it could be used.

Update:
Also attached is the modified Image Sizer 2.5.6.05 plugin for EE1.6.x.

Usage examples:

Guru—

Have added some of my own mods to Image Sizer.  Have you tried contacting the developer directly?  That was my thought, but decided to search the forum first to see if he was still active.

First time seeing this one and I am very interested in this. Is this hack available?

I’ll send you a PM about this.

Is there an example or modified imgsizer for download?
I’m interested in this post as I have to make something similar..
On every image upload (I’m using Mark Huot file field) I have to put a watermark

Modified plugin is now attached to the first post.

Is it possible to do this for the latest version for EE2?

Watermarking using the Lumis Image Resizer?
Awesome!! Just what I was look for… means I dont need to use the gallery module.

Am I right in believing it keeps all the parameters from the main Lumis imgsizer plugin like auto sizing, caching, quality, greyscale, it just adds the watermarking feature?
and works fine with the plugin as a single and paired tag?