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Resize a Batch of images (Web App)

How to use Batch to resize multiple images at once. Web App.

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Written by Craig Wright

You can change the size of the images in your batch to suit different requirements. For example, you could resize some of the images to use on social media platforms and some to use on your website.

A batch showing images resized at different sizes


Steps (Web App)

To resize images in a batch:

  1. Select the images you want to resize.
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    To learn more, see How to select images using the Batch feature (Web App).
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  2. Select Resize.

  3. Choose a size from the presets or set Custom dimensions.
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    If your images have no background or a solid color background, Photoroom resizes them. You can ignore the remaining steps.
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    If your images have a background picture, either the original background, an image you chose, or an AI background, continue with the next step.
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  4. Choose a type of resizing and then select Apply to images:
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    • Expand with AI
      Keeps the entire image visible and uses AI to fill any transparent pixels (such as new canvas space as a result of resizing).
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    • Fill image
      Scales the image equally on all sides until it fills the canvas. Any parts outside the canvas are cropped.
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    • Fit image
      Centers the image and scales it to the largest size that fits inside the canvas, while keeping the whole image visible. Any unused canvas space is transparent.​


If the resizing changes how images fit on the canvas, you can reposition the layers later. For details, see Position, flip, and rotate a batch of images (Web App).

Note: If you resize a batch and then apply a template, the template size overrides the resize setting.


Examples of resizing with different fit options

In these examples, the original size of the batch images is 1512 × 2016 pixels.

The three images are now square and have been scaled to fill the square. The images are cropped on all 4 sides.

We resize them to Landscape 2016 × 1512 (4:3) and choose Expand with AI. For each selected batch image, Photoroom changes the canvas size and uses AI to add extra background to fill the canvas.

We resize the images again, this time to Square 1512 × 1512 and choose Fill image. For each selected batch image, Photoroom changes the canvas size and scales the image equally on all sides so that the image fills the space. The edges are cropped.

We resize the images again, this time to a Custom size of 1800 × 2080 and choose Fit image. For each selected batch image, Photoroom changes the canvas size, then centers the image and scales it to fit the canvas while keeping the whole image visible. In this case, there is transparent space at the left and right.

The images are resized to portrait, but a larger canvas than the original size. The extra canvas space is shown as transparent areas on the left and right sides.

Troubleshooting

Unusual results with images that have white borders

Photoroom can produce unusual results if your source images have white borders at the top, bottom, or sides. This is because the AI treats the white borders as part of the image.

To solve the problem, exit the Batch Editor and crop the edges from the image. Then create a new batch using the cropped images.


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