To apply for JEE Main, candidates have to fill up JEE Main Application Form in online mode only.

While you are in the process of filling the application form of JEE Main, you may come across various terms or stages which may not be easy to understand.

For thumb impression there is some criteria which are:

All the scanned images - photograph, signature and thumb impression are required to be in jpg/jpeg format only.

Image of the thumb impression should be greater than 1 kb and less than 30 kb.

Dimension of thumb impression image should be 3.5 cm (length) x 1.5 cm (Height) only

Upload scanned images of the following:
Your photograph
Your Signature
Your Thumb Impression

Specifications for Scanned Thumb Impression
Draw a rectangular box of 7×2 cm in size on a white A4 sheet.
Using an ink pad of black or blue ink, put your Thumb impression

Important:
Left for boys & right for girls on it

Scan the Thumb impression using a scanner only. It should be in JPEG format.