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BPSC Signature Dimension: 300 x 80 px
BPSC Signature Size: Less than 60KB
BPSC Signature format/extension: in JPG (.jpg extension) format.
By using a modern digital camera, or even a phone with a built-in camera, it is easy to create a very large file. But large image files can take a long time to upload and use a lot of storage space, so we have limited the upload size to 60 KB.
~ BPSC Authority
If your image is too big you can easily make it smaller (300x80px, less than 60KB) with this BPSC Signature Resizer tool.
~ Newisty Authority