Crop Image
Drag to keep only the part you need. Lock the aspect ratio or type exact coordinates and size.
Output size:
How to use
- Upload an image.
- Drag an area on the image or enter numbers. Pick a ratio to lock it.
- Choose an output format and download.
View detailed guide
What this tool does
Crops the part you need from an image and saves it as a new image. Draw roughly with the mouse or enter exact numbers, and lock a ratio such as 16:9 or 1:1.
Steps
- Drop an image or click to upload it. (Ctrl+V paste and loading from the workbench also work)
- Drag on the image to draw the crop area. Drag inside to move it and drag a corner to resize it.
- If you need a fixed ratio, pick it under "Aspect ratio". The area shrinks to that ratio around its current center and stays locked to it afterwards.
- For precision, type numbers into X, Y, Width and Height. The unit is original pixels.
- To remove empty edges, press "Auto-trim margins".
- Choose the format and quality and press "Download". To continue in another tool press "Send to Workbench".
Settings
- Aspect ratio: Free, Original ratio, 1:1, 4:3, 16:9 and more, or Custom (W:H). The area shrinks to the ratio around its current center as soon as you pick it.
- X, Y: the position of the top-left corner of the area. 0, 0 is the top-left corner of the image.
- Width, Height: the size of the crop area, which becomes the size of the result.
- Output format: PNG is lossless and supports transparency, JPG is small but has no transparency, and WebP combines both advantages.
- Quality, Target size: JPG and WebP only. If you enter a target size (KB), quality is lowered automatically to fit.
How it works
The image is drawn onto a canvas in your browser, only the selected area (in original pixels) is copied to a new canvas, and that canvas is encoded in the chosen format. Cropping uses the original resolution regardless of how large the image looks on screen, so no quality is lost in the crop itself. (If you save as JPG or WebP, that format's compression is applied.) "Auto-trim margins" scans every pixel and takes the bounding box of the pixels that are not transparent or nearly the same color as the top-left pixel (difference under 12).
Good to know
- Your work is gone when you close the tab.
- If the content already reaches the edges you will see the message "No margin to trim.".
- For ID photo sizes (mm), use "Crop to ID photo size".