With OLD, I have learned to never comply with a girl's request for more pics or even more information about me. There are two reasons for this. The first is that it sets the wrong frame. She thinks she is on some kind of throne and you are the peasant crawling on your knees kissing her feet hoping that she selects you. F-that. You are the prize, not her. She should be sending YOU additional pics. If a girl asks me for additional pics I would either next her right there or tell her to send me more pics of her, in which case I would say something like, "Sure, I'll get some together and send them your way. Could you please send me some more pics of you as well - specifically ones that clearly show the shape of your body," since that's the number one thing women hide in their photos with outfits and angles. And I would not send any pics of me unless she sent hers first. The funny thing is, most women will take GREAT offense to this request while at the same time, they are asking you for exactly the same thing for the same reason. Weed those women out by countering their request with your own request.
The second is that I find that women who do this are looking for reasons to disqualify you and are not serious about dating or meeting up. Before I wised up, I found that any time a girl asks you for more information about you or more pics etc, as soon as you provide it, they next you. Most of these women are probably not going out on any dates with anyone and are just looking for an excuse to stay home. This behavior falls into a common pattern many people exhibit - one in which you find excuses and reasons not to do something due to underlying psychological reasons such as fear. Example: A guy goes out with friends to a nightclub to meet women, but when faced with the decision to approach a hot girl, he says, "oh she's not my type" instead of approaching her, in order to ease his fear/anxiety, even if she is totally his type. This is exactly what many women do on OLD.
Same goes for when girls ask you about your hobbies or what you do for work etc. Believe me, the LESS you say about yourself over the dating apps, the better. Be fun, funny, and playful. Dodge the questions in a playful and funny way. Like when she asks you what you do in your time off, tell her you volunteer at a no-kill shelter for fruits and vegetables or that you dive shipwrecks for sunken treasure or whatever. Meeting in-person is the right time and place to discuss more about yourself, and for her to better see how you look and move. You should be choosing photos for your profile that show you well - without sunglasses, without baggy clothes, without tons of filters, without being far away etc. If you do that there is no reason she should need to see additional photos.