• https://github.com/ankitects/anki - repository for Anki on desktop computers.

I am using the “Remove Duplicate Cards” addon available at https://ankiweb.net/shared/info/95590040 .

To install it

start anki on the command line
-> Tools -> Add-ons
-> Get Add-ons
-> enter the code displayed on the addon page (ex:- 95590040)

Ref:-

• https://docs.ankiweb.net/addons.html
• https://ankiweb.net/shared/info/95590040

Notes:

• The account on https://ankiweb.net/ can be synchronised with anki (installed on a Debian machine). The advantage of the Debian version is that you can delete the cards as needed. The online version does not support card deletion. I am currently using

% anki --version
anki 2.1.8

% dpkg -l anki | grep ^ii
ii  anki           2.1.8+dfsg-1 all          extensible flashcard learning program

today | 2020-11-09

• AnkiDroid is not affiliated with Anki Desktop or AnkiWeb. AnkiDroid is based on Anki Desktop but it is developed by an entirely separate community of volunteers.
  • Ref:- https://docs.ankidroid.org/#AnkiDesktop

Settings → Security & privacy → Privacy → Permission manager → Files → “See more apps that can access all files” → AnkiDroid.A → Allow access to manage all files → drag to the right.