Hello!
May i know for which exam are you trying to take a picture for??
For any exam you wish to apply you have to have a passport size photo till your shoulders.
There is no Stamp size photo preference for any exam.
You can find the specifications of the photo in the particular rule book of the exam you wish to write.

Hope this helps!
All the best!

Hii,

While filling the NEET 2020 Application, the candidate should know the specifications of required documents to be attached. The passport Size Photograph should be of Size 20 to 200 KB and must be JPG/JPEG format only. While Post card size photograph should be 50 to 300 KB (4'' × 6'') and must be JPG/JPEG format only. Both are different.

Naina, follow these instructions please:

Uploading of Photograph: Instructions

Must be latest passport picture in a white background with the Name of the candidate and date written on the photograph. The Size must be 50 Kb to 300 Kb and format should be JPG.

The focus has to be on the face with 80% coverage and ears clearly visible.

Uploading of Post Card size photograph: Instructions:

Must be latest post card size picture in a white background with the Name of the candidate and date written on the photograph. The Size must be 10 Kb to 100 Kb and format should be JPG

Uploading of Signature: Instructions

Candidates must sign with a black pen on a white background in JPG format with a file size of 4 Kb to 30 Kb

Uploading of Left hand thumb impression: Instructions:

The file size should be 10kb-50kb in JPG/JPEG format.

Class 10th Passing certificate: Instructions:

File size of 100kb to 400 kb in JPG/JPEG format.