What library should be used to scan checks through a webcam on a smartphone?

Question

JavaScript

Tell me a library that will allow you to recognize characters on paper, in particular, scan checks.
Case: The user made a purchase, opened the site, gave access to the camera, scanned the check, the data in the check (number, etc.)
was sent to the server. So, in fact, you need a function for character recognition on paper

Answer 1

You don’t need to recognize characters from the check, but the QR code that the online checkout prints. Using the QR code, you can already create a request to the OFD and get the receipt parameters. It is useless to pick in the direction of letter recognition.
QR codes can be recognized by a lot of things. For example: https://github.com/schmich/instascan

Answer 2

Different stores have different receipt formats. You will have to let the user select areas with the check number and amount, or drive predefined check formats into the application.
I did not use it, but there is such a line https://tesseract.projectnaptha.com/

Answer 3

firebase ml kit but if it is possible to use qr or bar code, then it is better to use them

Answer 4

There is also this

Answer 5

https://github.com/naptha/tesseract.js - it will cope with the check easily, the main thing is to indicate in the parameters that the language is Russian, otherwise it will be crap