Use Vazirmatn font for Persian and Arabic text across all websites
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Download and install Vazirmatn: https://fonts.google.com/specimen/Vazirmatn
Download and install Noto Sans: https://fonts.google.com/noto/specimen/Noto+Sans
This script is designed to work on web pages that specify Segoe UI, Roboto, Arial, Helvetica, and Tahoma as their Persian font. It does not affect non-web content such as plain .txt files, or system-level rendering.