How to resize an image to 820x312
- Choose or drop your images above.
- Keep “Crop to fill” for an exact 820x312 result, or pick “Fit inside” to avoid cropping.
- Download the resized files individually or as a ZIP.
About 820x312 pixels
A 820x312 image is landscape, with an aspect ratio of about 2.63 to 1, and holds 0.26 megapixels. At 300 DPI it would print at about 2.7 x 1.0 inches (6.9 x 2.6 cm). As a JPEG it usually lands between 28KB and 56KB, depending on the picture and the quality you choose.
Where 820x312 is used
The size Facebook displays for a page or profile cover on desktop. On phones it shows a taller crop, so the middle is the safest place for key content.
- Keep the file light. A banner of a few hundred KB loads fast and is rarely rejected.
- Put the important part in the centre. Apps crop banners differently on phones and desktops.
- Avoid small text near the edges, where profile pictures and buttons can cover it.
Crop to fill or fit inside?
Crop to fill always gives exactly 820x312 by trimming the edges that do not match the shape. Fit inside keeps the whole picture and scales it so neither side exceeds 820x312, which can leave one side shorter. For a typical 4:3 phone photo, crop to fill removes about 49% of the picture. A 3:2 camera photo loses about 43%, a 16:9 screenshot about 32%, and a square image about 62%.
Quality and format
Check the result before you upload
Open the finished file and check three things: the picture measures 820x312, 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
Preview the cover on a phone, because the crop is different from desktop. Need another size? Try 1200x480, 1500x500, 1080x566, the general image resizer, or browse every size preset.
Frequently asked questions
Why is my image not exactly 820x312?
You are probably using Fit inside, which never crops. Switch to Crop to fill for exact dimensions.
How big will a 820x312 file be?
As a JPEG, usually between 28KB and 56KB. Photos with lots of fine detail come out larger, and simple graphics smaller. Lower the quality for a smaller file.
Is 820x312 the right size for Facebook cover photos?
It is a widely used size for Facebook cover photos, but platforms and agencies change their rules. Check the current guidelines before you upload.
Will detail survive at 820x312?
At small sizes fine detail disappears. Crop in close on the main subject and use a simple, high-contrast picture for the best result.