How to crop batch multiple images?

[hello8989]

I have a bunch of images that I want to trim. How to crop/ trim batch multiple images?

Thank you!

[Jon-M-Spear]

Do they all need exactly the same amount of crop and same positioning of crop?

If so, create a 'canvas size' action.  Then go to File > Automate > Batch.  Select your images and apply your Canvas Size action.

If each image needs a unique input, I can't think of a way to batch that.

[hello8989]

Thank you, but what is 'canvas size' action?

[hello8989]

I just want to trim the 'blank page' around my images.

[Jon-M-Spear]

Photoshop has a facility to record a set of repetitive actions which you can run in the future.

Canvas Size is a means to change the canvas size (not to be confused with resampling the image).  So if you had a canvas of (say) 200px x 200px.  If you set canvas size to 180px x 180px, you would reduce the canvas size by 10px on each side. (crop).

What do you mean by 'blank page'?  Why have images got blank page?   

[Stephen Marsh · Accepted solution]

Image > Trim, based off transparency, upper left or lower right pixel colour?

[hello8989]

Thank you! It works! 

[kaig11620057]

I created an action for trimming images with transparent backgrounds but when I run Batch for multiple files, Photoshop asks me every single time anyway whether I want the trimming to be based  on transparent pixels or whatever color in the corners. How can I skip on this dialogue and sort of set it to transparency by default so I can leave the computer and just let it run?

[Stephen Marsh]

@kaig11620057 - Action panel screenshot please, relevant steps expanded.

[kaig11620057]

I mean the standard dialogue when you trim a picture:

Although I recorded an action having my preferred default options ticked, Photoshop asks me for every single picture in a batch process...and that is not the point obviously.

Do you know how to skip this dialogue?

[Stephen Marsh]

@kaig11620057 – I know what you want to achieve, but I don't know how you have recorded your batch action... This is why I asked for a screenshot of the action panel with the steps expanded and visible (not the command itself).

EDIT: here is an example of how to setup the action correctly. I have tested in a batch action and it works fine!

This of course presumes that the image isn't flattened!

[kaig11620057]

Ah sorry I misunderstood 🙂 Yeah the pictures are not flattened but may have multiple layers inside. The whole procedure is basically

* trim transparency

* Select all layers

* set transparency on all layers to 0%

* merge all layers to one

Here is my action:

Any ideas?

[Stephen Marsh]

@kaig11620057 – I setup an action the same as yours and ran it via batch, the trim step didn't pop up any dialog with non-flattened files.

I can't test this script as I can't reproduce your issue, but you could always try replacing the Trim step in your action with a script:

#target photoshop
var savedDisplayDialogs = app.displayDialogs;
app.displayDialogs = DialogModes.NO;
try {
    activeDocument.trim(TrimType.TRANSPARENT);
} catch (e) {}
app.displayDialogs = savedDisplayDialogs;

https://prepression.blogspot.com/2017/11/downloading-and-installing-adobe-scripts.html 

[kaig11620057]

Thank you, I will definitely give that a try!