How to resize an image to 48x48
- Choose or drop your images above.
- Keep “Crop to fill” for an exact 48x48 result, or pick “Fit inside” to avoid cropping.
- Download the resized files individually or as a ZIP.
About 48x48 pixels
A 48x48 image is square, with an aspect ratio of 1:1, and holds 2,304 pixels in total. As a JPEG it usually lands between 0.3KB and 0.5KB, depending on the picture and the quality you choose.
Where 48x48 is used
A medium icon size used for desktop shortcuts and as one of the sizes inside a favicon file.
- 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 48x48 by trimming the edges that do not match the shape. Fit inside keeps the whole picture and scales it so neither side exceeds 48x48, 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 48x48, 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
Design at a larger size, then shrink, so the result stays crisp. Need another size? Try 64x64, 32x32, 128x128, the general image resizer, or browse every size preset.
Frequently asked questions
Why is my image not exactly 48x48?
You are probably using Fit inside, which never crops. Switch to Crop to fill for exact dimensions.
How big will a 48x48 file be?
As a JPEG, usually between 0.3KB and 0.5KB. Photos with lots of fine detail come out larger, and simple graphics smaller. Lower the quality for a smaller file.
Is 48x48 the right size for desktop icons and favicons?
It is a widely used size for desktop icons and favicons, but platforms and agencies change their rules. Check the current guidelines before you upload.
Will detail survive at 48x48?
At small sizes fine detail disappears. Crop in close on the main subject and use a simple, high-contrast picture for the best result.