Crop image

Keep a rectangular part of an image using percentage coordinates.

Free · No sign-up · No file upload

Drop your files here

Supported files: JPG, JPEG, PNG, WEBP · Up to 50 MB per file · up to 50 files

Editing options→ Original format
Smaller sizeHigher quality

How to crop an image with percentages

  1. Choose JPG, PNG or WebP images.

  2. Enter X and Y as percentages for the top-left corner of the area to keep.

  3. Enter the width and height of that area as percentages.

  4. Check the preview and download.

Turning pixel measurements into crop percentages

Every value is a percentage of the original image, not a pixel count. To convert, divide the pixel position by the image width or height and multiply by 100. On a 1200 × 800 image, removing an 80 px banner from the top means Y 10 and Height 90. Positions and sizes are rounded down to whole pixels.

Percentages also keep batches consistent. A phone screenshot and a laptop screenshot are cut at the same relative position, for example the top tenth of each. Width and height percentages are independent, so the kept area only has the original shape when both values are equal. To bring a crop to an exact pixel size, run it through Resize image.

Supported files

JPG, JPEG, PNG, WEBP → Original format

  • Up to 50 MB per file · up to 50 files
  • Total input: 300 MB
  • Total output: 150 MB
  • Maximum image size: 40 MP · 16,384 px

Static images only. Animated PNG and WebP are not supported.

Example result

Before

Example result: Crop image (Before)
source.jpg342.4 KB · 1200×800

After

Example result: Crop image (After)JPG · 720×560
crop-image-1.jpg86.2 KB · 720×560
Example settings: Quality 80 · X (%) 10 · Y (%) 25 · Width 60% · Height (0 = automatic) 70%

Frequently asked questions

How do the crop percentages define the saved area?
X and Y locate the top-left corner. Width and height are percentages of the original image. This tool uses numeric fields, not a draggable selection.
How do I crop an image to a square?
Work out the percentages from the shorter side. For a 4000 × 3000 photo, enter X 12.5, Y 0, Width 75 and Height 100 to keep a centered 3000 × 3000 square.
Why did my width or height value drop when I changed X or Y?
The kept area cannot extend past the right or bottom edge, so Width (%) is limited to 100 minus X and Height (%) to 100 minus Y. Lower X or Y first if you need a larger area.
Does cropping change the resolution of the part I keep?
No. The kept pixels are copied one to one, so 50% of a 4000 px wide image becomes exactly 2000 px wide. Only the compression changes, using the Quality value for JPG and WebP files.
Are my files uploaded to a server?
No. Files are processed in your browser on this device and are not sent to BlurMe servers.

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