Even though Indic scripts are supported through Unicode by modern platforms and browsers, many Indic websites still use the old non-Unicode font base encodings. Without those proprietary fonts installed in user's computer, those pages can not be rendered correctly.
Padma automatically transforms Indic text from proprietary formats to Unicode, so that user is able to review the page correctly without the proprietary fonts installed.
You can config Padma to transform a website automatically via the options page by adding the URI of the website and then save the options, if the conversion from the proprietary font to Unicode is supported in Padma (Please refer to known issue for detail). Or you can remove the URI and then save the options to avoid the automatic transformation to a specific page.