Crop Image by Aspect Ratio

Crop pictures to standard proportional ratios such as 1:1, 4:3, 16:9, or custom proportions.

How It Works & Processing Standards

Crop pictures to standard proportional ratios such as 1:1, 4:3, 16:9, or custom proportions.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Desktop max file size: 40MB
  • Mobile max file size: 20MB

Crop Image by Aspect Ratio is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Crop Image by Aspect Ratio

  1. 1
    Select PhotoChoose your picture.
  2. 2
    Choose Aspect RatioEnter ratio width and height units (e.g. 16 and 9).
  3. 3
    Download Cropped AssetSave your formatted image.

Common Use Cases

  • Cropping camera photos to 16:9 for YouTube thumbnails or video backdrops
  • Fitting portfolio pictures into 1:1 square Instagram grid cards
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