DocuSizer

Change Image Aspect Ratio Online

Fit your image into a different aspect ratio by padding with a background colour - no cropping, no distortion.

🔒100% private. All processing happens in your browser. Your images are never uploaded to any server.

How to Use Change Image Aspect Ratio

  1. 1

    Upload your image.

  2. 2

    Choose the target aspect ratio (1:1, 4:3, 16:9, etc.).

  3. 3

    Pick a background colour and click Apply.

Frequently Asked Questions

Will my image be stretched or cropped?

No - the original image is scaled to fit inside the new canvas and the remaining space is filled with the chosen background colour.

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