MELLOW HUB · FREE TOOL

Image cropper: cut a picture to 1:1, 4:5, 9:16 or a shape you set

Crop a picture to 1:1, 4:5, 9:16, 16:9 or your own shape and keep its own pixels: nothing is resized. Free, in your browser; nothing is uploaded.

By Mellow · Updated October 12, 2026

Crop a picture to a shape

Choose a pictureAny picture. It stays in this page: nothing is uploaded.

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How do I crop a picture without losing quality?

Cut it and do not resize it. This cropper keeps the largest part of your picture that has the shape you choose, at the picture’s own pixels, so nothing is enlarged and nothing is squeezed. A 4:5 crop of a 4000 × 3000 photo comes out 2400 × 3000; a 9:16 crop of the same photo comes out 1688 × 3000. Zooming in keeps a smaller part, still at its own pixels.

What each shape keeps of a photo

Shape	From 4000 × 3000	From 3000 × 4000
1:1	3000 × 3000	3000 × 3000
4:5	2400 × 3000	3000 × 3750
3:4	2250 × 3000	3000 × 4000
2:3	2000 × 3000	2667 × 4000
9:16	1688 × 3000	2250 × 4000
16:9	4000 × 2250	3000 × 1688
3:2	4000 × 2667	3000 × 2000
4:3	4000 × 3000	3000 × 2250

The table is arithmetic: the largest crop of each shape, in the picture’s own pixels. Which shape a network asks for is in the answers linked below.

Cropping or resizing?

Crop when the picture is the wrong shape: this tool. The pixels stay as they are.
Resize when a network wants an exact size: the image resizer cuts to the shape and brings it to that size.
Keep it whole when nothing may be cut: the no-crop tool puts the whole picture on a ground of the right shape.

Questions

How do I crop a picture to a shape?

Choose the picture and a shape. The largest part of the picture with that shape is kept; drag the picture to move what is kept, and zoom in to keep a smaller part. Then save it as a JPG or a PNG.

Does cropping make the picture smaller or blurry?

No. The cropper cuts and does not resize: every pixel that is kept is the picture’s own. A 4:5 crop of a 4000 × 3000 photo is 2400 × 3000. To bring a picture to a network’s exact size, use the image resizer.

Can I crop to a shape that is not in the list?

Yes. Choose “Your own” and give the width and the height in parts, as in 5 to 7. The crop takes that shape at the largest size the picture allows.

Should I save a JPG or a PNG?

A JPG for a photograph: it is far smaller. A PNG for a screenshot, a drawing or anything with transparency: it keeps every pixel as it is. A transparent picture saved as a JPG gets a white ground.

Is my picture uploaded?

No. The picture stays in this page and is cut in your browser; the file is made on your own device.

Cropped; now post it everywhere at once

Mellow Hub takes the picture from here into one post and sends it to the networks you connect, now or at a time you choose, checking each network’s rules first. Need a network’s exact size rather than a shape? The image resizer cuts and resizes to each one.

Post to Instagram and TikTok at once

Every social media image size, with sources

This tool is free and needs no account. Mellow Hub publishes your first 3 posts free, with no card; after that it is paid, with a 7-day free trial. It publishes only what you, or an assistant you have authorised, send or schedule.

Choosing a scheduler? Mellow Hub next to Buffer, Metricool and Postiz, from each one’s own pricing page, including where another is cheaper.

Answers that go with this tool

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YouTube thumbnail tester: See a thumbnail in YouTube’s home feed, search and sidebar at their real sizes, then export it at 1280×720 under 2 MB.
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Caption generator: Describe a post, pick a network and a tone, and get captions counted against that network’s limit.
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