I currently use a third-party tool to make a screen shot of the position, have it recognized and added to a lichess study.
It works but cumbersome and generally doesn't save much time vs entering the position by hand. Additionally, a tool developer doesn't seem interested in enhancing it at this time.
I wonder if lichess development team maybe interested to add this feature to their list of things to implement.
Can i just clarify, you want an app which can automatically recognise a position (e.g off a youtube chess video) and input it into Lichess analysis?
@mkoganov You should actually be able to get the FEN of a position fairly quickly by accessing the page source (CTRL+U).
@EliasDR , I do not believe it works this way. PDF or any type of book in electronic format doesn't contain fen.
@TheChessPlayer21 I want to select the region of my computer screen, that will be chess diagram and save it into a lichess study.
If it is not a chess diagram, that operation should of cause fail.
I don't think that has been implemented, but I might know something- let me send it to you in DMs if that's fine?
@mkoganov You're right. I misunderstood the question (thought you wanted to grab position from a game in lichess). That aside, I don't think lichess will develop a tool that could grab a position, since it lies outside the scope of the website.
<Comment deleted by user>
Need artificial intelligence to detect the chess board as a chess board and then find the correct placement just like google how it tell that what something is and it is really hard to code but still good idea
@mkoganov lichess doesn't need to do that, an extension that recognises the position already exists. YOu can have it here:
chrome.google.com/webstore/detail/chessvisionai-chess-posit/johejpedmdkeiffkdaodgoipdjodhlldIt will generate the FEN, which you can paste into
lichess.org/editor 
