There are alternative apps in Mobile App Stores, this repo is no longer maintained, if you think I should countinue this for a good reason you can contact me, thanks.
Easily export Telegram contacts with profile images in vCard format
You can download the latest executable binary from here: https://github.com/salarcode/ExportTelegramContacts/releases
1- First you have to register at https://my.telegram.org/auth
2- Then you have to register an application for your phone at https://my.telegram.org/apps
3- Enter the retrieved 'api_id' and 'api_hash' in ExportTelegramContacts.exe.config or app.config file.
4- Run the application and choose option '1' and authenticate as instructed. NOTE: If you have Telegram application associated with the mobile number you've entered, you will most likely receive the code in the app instead of a SMS.
5- You are good to export the contacts
