Telegram Contacts JSON to VCF

You can export your Telegram contacts via Telegram desktop app (Settings -> Advanced -> Export Telegram data).
To convert the exported contacts (JSON file) to a VCF file and import it by your phone, use this script.

Usage

python3 telegram_json_to_vcf.py [--add-all] json_file vcf_file
Arguments:
--add-all: Whether to add all of the contacts or add them one by one
json_file: Path to JSON file
vcf_file: Path to VCF file

Examples:
python3 telegram_json_to_vcf.py --add-all ./contacts.json ./contacts.vcf
python3 telegram_json_to_vcf.py ./contacts.json .

Notes

1. JSON file must have UTF-8 encoding.
2. You can specify the VCF file name (see the examples).
3. In case another file exists with the same name, then the VCF file is renamed.