Both websites have exact same wording in their faq to this question. Well almost.
(via printmyaadharcard)
(via myaadharcard)
(via printmyaadharcard)
(via myaadharcard)
The sites do not seem to have any kind of permission from Government to "collect and print" Aadhar card.
This may mean that they are doing illegal work?
... unauthorised printing of Aadhaar card or aiding such persons in any manner may amount to a criminal offence punishable with imprisonment under the Indian Penal Code and also Chapter VI of The Aadhaar Act, 2016
“The Aadhaar card or the downloaded Aadhaar card printed on ordinary paper is perfectly valid for all uses. If a person has a paper Aadhaar card, there is absolutely no need to get his or her Aadhaar card laminated or obtain a plastic Aadhaar card
The print-out of the downloaded Aadhaar, even in black and white form, is as valid as the original Aadhaar letter sent by UIDAI