Crop preview notes
The checker calculates a centered crop for a target ratio and shows the exact pixels removed from each side.
It does not alter the source file; use a resize or social media tool after deciding the crop is acceptable.
Image Crop Checker
Preview a center crop before you resize a cover, thumbnail or profile image. The result shows how many pixels would be removed on each side.
Target ratio previewKept areaCrop marginsNo auto subject detection
Crop checker
Image preview
Choose an image to see checks.
Choose an image to see checks.
How it works
- 1Choose an image.
- 2Pick or enter a target aspect ratio.
- 3Check the preview, kept percentage and removed pixels before creating a resized image.
Privacy and limits
- The preview is calculated in your browser and the image is not uploaded.
- The checker uses a centered crop and does not detect faces, text, logos or subjects.
- Final platform crops may differ, especially in responsive layouts.
Common use cases
- Previewing a square avatar crop
- Checking a 16:9 cover from a portrait photo
- Seeing whether a product image loses edge content
Crop notes
- The preview uses a center crop.
- Subject, face, text and logo detection are not automatic.
- Kept percentage is based on pixel area, not visual importance.
Original test sample
- Upload a 1600 x 1200 image and choose 16:9 to confirm top and bottom pixels are removed.
- Choose 1:1 for a wide image and compare left and right crop margins.
Frequently asked questions
Are my images uploaded?
No. ImgShrink processes selected images in your browser and does not upload them to a server.
Can this tool guarantee an exact file size?
No. Target compression gets close when possible, but the final bytes depend on image detail, dimensions, format and browser encoding.
Why is an output format unavailable or different?
The browser controls image decoding and export support. Some browsers may not export AVIF or may flatten unsupported transparency.
Source and compatibility notes
This tool works in the browser, so output support depends on what your browser can read and export.
Last checked: 2026-09-07
Notes
- No server-side image processing is used.
- Output format support depends on the browser.
- Animated images and metadata are not treated as guaranteed preserved data.
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