What are the digital photo requirements for an OCI card?
A square JPEG or JPG, between 200 x 200 and 900 x 900 pixels, no bigger than 200 KB. The scanned signature follows the same format and size limit.
The OCI portal rejects photos that do not meet its standards, which can delay the application. If something is wrong with an upload, the Indian mission or post handling the case sends an email.
Source: ociservices.gov.in
