Are my images uploaded to a server?

No. The image is decoded into a canvas and cropped locally in your browser. Nothing is ever sent anywhere.

How accurate is the crop?

Cropping is pixel-exact. The displayed selection is scaled for the screen, but the crop is performed on the image's true pixel dimensions, so the output matches the coordinates you set.

Which formats can I crop?

Any image your browser can decode — including JPG, PNG, WebP and GIF (first frame). The cropped output is saved as a lossless PNG.

Can I crop to exact pixel dimensions?

Yes. Besides dragging a rectangle, you can type the exact X and Y offset plus the width and height in pixels, so you can crop to a precise size such as 1080×1080 for a square thumbnail.

Does cropping lose quality?

No re-sampling happens — the chosen rectangle of original pixels is copied out unchanged and saved as a lossless PNG, so the cropped region looks identical to the source.

Is there a file size limit?

There is no fixed limit; the only constraint is your device's memory, since the whole image is decoded into a canvas. Very large photos work but use more RAM.

Will the original file be modified?

No. The crop produces a brand-new PNG for download. Your original file on disk is never touched or overwritten.

Image Crop Tool — Gera Tools

Crop images privately in your browser

Select any part of an image and export just that region. This crop tool is handy for trimming screenshots, making square avatars, removing unwanted edges, or cutting a product out of a busy photo — all without uploading anything.

How it works

When you add a file, the browser decodes it into a <canvas> at its true pixel dimensions. You define the crop region either by dragging a rectangle on the preview or by typing exact X, Y, width and height values in pixels. Because the on-screen preview is scaled to fit, the tool maps your selection back to the original resolution before copying, so the crop is pixel-exact. The selected rectangle is then drawn onto a new canvas sized to the crop and exported as a lossless PNG.

Field	Meaning
X	Left edge of the crop, in pixels from the left
Y	Top edge of the crop, in pixels from the top
Width	Crop width in pixels
Height	Crop height in pixels

Example

To pull a 300×300 square starting 50px from the top-left of a 1200×800 photo, set X = 50, Y = 50, Width = 300, Height = 300, then click Crop. The output is a 300×300 PNG containing exactly that region of the original pixels.

Everything happens locally — the image is decoded into a <canvas>, the chosen rectangle is copied out, and the result is offered as a download. Your files are never uploaded.