A small but wonderful trick: You have a document with many images and you are not quite sure whether to take the images in color, black and white, sepia or something else.
There is a trick that allows you to compare several versions quite quickly.
Step 1
I have inserted all the images into my example document and now go to the Link panel. I want to link exactly these images differently.
Step 2
I have a folder with black and white images and I have copied the same ones (only in color) into a folder called "colorful".
You can name the folders whatever you like. The only important thing is that the file names are the same!
Step 3
Then I can tell InDesign that I want to re-link the images.
I select a link and then I just have to go to the small options menu at the top right under Links - the smaller the menu, the more important the options.
Just click into it. There's the menu command Relink to folder. That's exactly what we want.
Step 4
Then we can immediately say: Please link to my folder "colorful". We confirm with OK and the picture is now colorful.
Step 5
But I actually wanted all the pictures to be colored. So I just have to select all the pictures and click on Link to folder again.
Step 6
Then I select my "colorful" folder again and all the pictures appear in color.
That's how quickly all the pictures I want are replaced without having to rename any folders or file names.
So you can quickly compare whether the layout should contain black and white or colorful images or or or. This is the quickest option.