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I've been moving toward publishing my photos online and due to copyright concerns I want to put watermarks with my logo on my photos (mainly I just don't want people stealing my photos and claiming them as theirs when they aren't). Unfortunately, I can't find any modern software with the ability to watermark a batch (100+) photos at once (as lightroom CC removed watermarking).

Suggestions would be greatly appreciated!

  • What copyright concern do you expect your logo to solve? – Robin Dec 4 '18 at 18:38
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Here comes the Linux way (assuming imagemagick is installed):

composite -dissolve 30% -gravity SouthEast -quality 100 logo.png in.jpg out.jpg

There is also ImageMagick for Windows, I guess.

Here comes a quick explanation of the command:

composite - Command we execute, part of the IM suite
-dissolve 30% - Give the watermark an opacity of 30%
-gravity SouthEast - Locate watermark in bottom-right (possible values here)
-quality 100 - Quite obvious, the JPEG quality for the output
logo.png - Your watermark, thanks to -dissolve, doesn't have to be opaque
in.jpg - The original image that you wish to watermark
out.jpg - The filename of the result image

Now let's write a quick bash script to watermark every image in the folder originals:

#!/bin/bash
for i in originals/*; do
    composite -dissolve 30% -gravity SouthEast -quality 100 logo.png "$i" "results/$(echo $i | cut -d '/' -f 2)"
done

Execute this in a folder containing your logo.png as watermark, a folder originals with your input images, and an empty folder called results where the modified images will be saved in.

  • If you do make the switch to Linux, look into Darktable (basically lightroom but free), it has a watermark module too and even though I've never tried it I'm sure it can be applied in batch too! – confetti Dec 5 '18 at 14:18
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Lightroom Classic CC still has watermarking features when you export the photos. Adobe has the exact steps here: https://helpx.adobe.com/lightroom/help/using-watermark-editor.html

  • Came here to post exactly this! – Hueco Dec 4 '18 at 17:58
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If you have access to Photoshop, you can record applying a watermark as a custom action, and apply that to a batch of photos (through File -> Automate -> Batch).
Alternatively, you can use a program like JACo Watermark to process your files.

  • Can you provide your affiliation with the second software you mention? – Romeo Ninov Dec 4 '18 at 17:05
  • I have no affiliation with it: it was the first open source, free-to-use software I found that was able to do what the OP asked for. (I realize the letters in the name are quite similar to my user name). – Joachim Dec 4 '18 at 18:55
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You can do this with XNView MP software (free). Select the images, menu Tools->Batch Convert, on Actions tab select Add action->Image->Watermark, select appropriate image for watermark and press Convert button

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And my all-time favorite image viewer for windows, Irfan view.

0. Backup your source material.

  1. File > Batch converion/rename.

  2. On the panel choose Batch conversion and "Use advanced options.

  3. And on the next panel there is the add watermark image, and adjust the position.

I would prepare a nice watermark in another program like Gimp.

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Faststone Image Viewer is another option. Free for non-commercial use and with a better interface than IrfanView and XNView.

  • Better interface for whom? – Romeo Ninov Dec 5 '18 at 14:54

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