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Resize image to 40x40

Resize image to 40x40 for small avatars and list icons. Choose crop to fill the frame for an exact size, or fit inside to keep the whole picture.

Lower means a smaller file.

Width × height (px)

How to resize an image to 40x40

  1. Choose or drop your images above.
  2. Keep “Crop to fill” for an exact 40x40 result, or pick “Fit inside” to avoid cropping.
  3. Download the resized files individually or as a ZIP.

About 40x40 pixels

A 40x40 image is square, with an aspect ratio of 1:1, and holds 1,600 pixels in total. As a JPEG it usually lands between 0.2KB and 0.4KB, depending on the picture and the quality you choose.

Where 40x40 is used

A small square used for avatars in comments, chats and lists.

  • Check the result at its real size, not zoomed in, before you use it.
  • Use a simple, bold design with a transparent background. Fine detail disappears at small sizes.
  • Save icons as PNG so edges stay sharp. Use JPG only for photo avatars.

Crop to fill or fit inside?

Crop to fill always gives exactly 40x40 by trimming the edges that do not match the shape. Fit inside keeps the whole picture and scales it so neither side exceeds 40x40, which can leave one side shorter. For a typical 4:3 phone photo, crop to fill removes about 25% of the picture. A 3:2 camera photo loses about 33%, a 16:9 screenshot about 44%, and a square image about 0%.

Quality and format

Check the result before you upload

Open the finished file and check three things: the picture measures 40x40, the subject is not cut off, and the file is small enough for where you upload it. If a platform sets a size limit, run the result through the online compression tool or choose a limit such as 200KB.

A tip for this size

Crop to a centred face, because very little detail survives at this size. Need another size? Try 48x48, 32x32, 64x64, the general image resizer, or browse every size preset.

Frequently asked questions

Why is my image not exactly 40x40?

You are probably using Fit inside, which never crops. Switch to Crop to fill for exact dimensions.

How big will a 40x40 file be?

As a JPEG, usually between 0.2KB and 0.4KB. Photos with lots of fine detail come out larger, and simple graphics smaller. Lower the quality for a smaller file.

Is 40x40 the right size for small avatars and list icons?

It is a widely used size for small avatars and list icons, but platforms and agencies change their rules. Check the current guidelines before you upload.

Will detail survive at 40x40?

At small sizes fine detail disappears. Crop in close on the main subject and use a simple, high-contrast picture for the best result.