How to Change Image Aspect Ratios at Scale

Use this guide when you have approved images and need to create the same assets in new aspect ratios at scale.

For this workflow, use the Change Aspect Ratio action in Batch. You do not need to write a prompt. Riverflow uses the target ratio and Center location settings to adapt the frame across every selected image.

Use This For

Use this workflow when you need to:

create paid social crops
produce ecommerce image variants
adapt images for stories, reels, feed, and landscape placements
turn one approved image set into several channel-ready formats
resize many product or campaign images without editing each one manually

Use the single-image Change aspect ratio action or Editor when you only need to fix one asset. Use Batch when the same ratio change needs to happen across many assets.

Before You Start

Use source images that are already approved or close to final.

Before creating the batch, check that:

the product or main subject is clearly visible
important text, logos, faces, hands, or props are not too close to the edge
the image has enough surrounding space to extend or crop naturally
the image quality is high enough for the final placement
you know which part of the image should stay protected in the new frame

If an image is already very tightly cropped, a new wide or vertical version may be harder to create cleanly. For one-off fixes, use Editor or Quick edit. For a new creative direction from a product image, create the image first in Photoshoots or Images, then use Batch to create ratio variants once you have an approved asset.

Upload your starting images

Add the images that you want to adapt.

Choose The Target Ratio

In the Batch setup, choose the aspect ratio you want Riverflow to create.

Common target ratios include:

1:1 for square placements
4:5 for portrait feed placements
9:16 for stories, reels, and vertical placements
16:9 for landscape placements

Other available ratios may include 21:9, 3:2, 4:3, 5:4, 3:4, and 2:3.

Before running the batch, decide which ratios you actually need. Generating unnecessary ratios creates extra review work.

Create The Batch

Open Batch.
Select the images you want to resize.
Choose Change Aspect Ratio.
Choose the target aspect ratio.
Choose the Center location for the main subject.
Review the batch setup and credit information.
Run a small test batch first if you are changing many images.
Review the outputs.
Run the full batch when the test looks right.
Download the approved results.

Review The Outputs

After the batch has run, review the outputs in Batch and decide which ones to keep.

For each output:

choose Approve if the image is ready to use
choose Reject if the image is not good enough or should not be used

Reject an output if the product has been cropped, the composition feels wrong, important text or logos are missing, or the background extension looks unnatural.

Tips

Run a small test batch before resizing hundreds of images.
Choose Center location based on where the main product, person, or message sits in the source image.
Use source images with enough surrounding space where possible.
Review vertical formats carefully because platform UI can cover the top and bottom of the image.
Keep approved source images unchanged and treat resized outputs as new variants.