Batch processing, resizing and centre-ing in Affinity Photo

[dts1983]

I'm trying to use Affinity Photo to resize various images (book covers) proportionally to fit centrally onto a white canvas 720px square. I'd also like them to save as the name of the file ready for upload to our website. I'm a newbie to Affinity and batch processing generally. Thanks. 

[stokerg]

Hi dts1983 and Welcome to the Forums,

Not sure if you have found these resize Macros from @John Rostron Would would do the resizing for you if need to keep to fixed size.  The renaming of the files, we can't currently do

[John Rostron]

My macros scale the image proportionally, but to not fit to a canvas. The Macro below applies a similar macro to the others, but scales the document to 720px max. It then Resizes the canvas to 720px square, with the image centred on a transparent background. Let me know if you wanted a white background.

Fit to 720px square.afmacro

It should work as part of a batch process.

John

[dts1983]

Hi John,

Thanks for you're reply and macro. Sorry it's taken so long to get back to you, things have been a bit strange for the past month or so.

I've installed the macro and run it as a batch process, half the files were produced brilliant results but the other half something strange happened. I think it's enlarged the image but cropped it to the original size.

I've at attached some examples in case anyone can shed any light on the issue.

Thanks,

Daniel 

[KFreshDetroit]

On 3/23/2020 at 7:58 AM, John Rostron said:

My macros scale the image proportionally, but to not fit to a canvas. The Macro below applies a similar macro to the others, but scales the document to 720px max. It then Resizes the canvas to 720px square, with the image centred on a transparent background. Let me know if you wanted a white background.

Fit to 720px square.afmacro 1.35 kB · 10 downloads

It should work as part of a batch process.

John

 

This macro works great, but there were a couple things I wanted to ask how to do on there.

Like how can I make it 1500px and black background?

Fit to 720px square.afmacro

[John Rostron]

@KFreshDetroit, Sorry for the delay.

You can easily amend the first part of the macro to resize to 1500px. However, you will need to set the background colour to black before you run the macro (unless any Affinity guru can tell me otherwise).

Here is the resizing macro:

Layer > Unlock
Layer > Rasterize and Trim
Filter > Distort > Equations     
  (Enter the following in the x and y fields,  then Apply)
   (x/1500)*max(h,w)
   (y/1500)*max(h,w)
Document > Clip Canvas
Layer > Rasterize
Select > Alpha Range > Select Partially Transparent
Edit > Fill> Inpainting
Select > Deselect

The second part would be:

Document > Resize Canvas
   Unlock the link between width and height, set both to 1500. Click on [Resize].
Layer > New Fill Layer
   (This creates a Black Fill Layer on top of your image, assuming your background colour is set to black. )
Arrange > Move Back One
   This moves the layer behind your image

Here is the macro:

Fit to 1500px square.afmacro

John

 

[KFreshDetroit]

Thanks man! Someone else did one for me, but its nice to know the steps to do it!