Image Cropper
Crop images to any region or fixed aspect ratio and export as PNG or JPEG, entirely in your browser.
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Cropping is one of the oldest and most powerful editing decisions in photography and design. It removes the parts of an image you do not want, focuses attention on the subject, and changes the aspect ratio to fit wherever the picture will be used. A photograph that feels cluttered often just needs a tighter crop; a banner that has to be exactly sixteen by nine needs the right region selected before anything else. Cropping does not add information, but by choosing what to leave out it shapes how an image reads.
Frequently asked questions
Is my image uploaded to crop it?
How do I select the area to crop?
What do the aspect ratio options do?
Does cropping reduce image quality?
Should I export as PNG or JPEG?
Can I crop on a phone or tablet?
Why does the preview look smaller than my actual image?
Is there a limit on image size?
About Image Cropper
This cropper loads your image into an HTML canvas and overlays a draggable, resizable selection rectangle controlled with pointer events, so it works the same way with a mouse, a trackpad, or a touchscreen. You can drag the rectangle to reposition it and pull the corner handle to resize, and you can lock the selection to a fixed aspect ratio: Free for any shape, or 1:1, 16:9, 4:3, and 3:2 for square, widescreen, classic photo, and 35mm framing. When you press Crop, the selected region is drawn to a fresh canvas at the source image's full resolution and exported as a PNG or a JPEG ready to download.
Because cropping happens on the original full-resolution pixels rather than the scaled-down preview, the exported image keeps its native sharpness; the on-screen preview is only there to let you frame the selection comfortably. Choosing PNG preserves transparency and gives lossless output, which suits logos, screenshots, and graphics, while JPEG produces a smaller file with an adjustable quality setting, which suits photographs where a tiny amount of compression is invisible.
The entire tool runs locally in your browser using the Canvas and Blob APIs. Your image is never uploaded, there is no server, no account, and no tracking, and it keeps working offline once the page has loaded. That makes it safe for private photos, unreleased designs, and any image you would rather not send to an online service, while still giving you a fast, precise crop in a couple of clicks.
Why aspect ratios are never arbitrary
The aspect ratios offered by a cropper are not random numbers, they are the accumulated standards of more than a century of photography, cinema, and screen design. The 3:2 ratio comes straight from 35mm film, which Oskar Barnack adopted for the original Leica in the 1910s by running motion-picture film sideways through the camera. That decision rippled forward: 35mm became the dominant still format, and most digital camera sensors still use 3:2 today purely because the lenses and habits were built around it.
The 4:3 ratio dominated television and computer monitors for decades, a legacy of early film standards carried into the first TV broadcasts and then into the cathode-ray tube displays that sat on every desk. When high-definition video arrived it shifted to 16:9, a wider frame chosen as a mathematical compromise that could reasonably display both the old 4:3 content and the very wide cinema formats. That widescreen ratio then spread from televisions to laptops, phones, and the video platforms that now dominate the web, which is why 16:9 is the safe default for almost any moving image.
The square 1:1 ratio had a quieter history until social media revived it. Medium-format film cameras like the Hasselblad shot square negatives, and the format had a devoted following, but it was Instagram's launch in 2010 with mandatory square photos that burned 1:1 into a generation's visual vocabulary. Today choosing a crop ratio is really choosing a destination: a square for a profile picture, widescreen for a video thumbnail, 3:2 for a print. The cropper just makes the geometry effortless once you know where the image is going.