Project served me well for a long time to convert my feeds into readable and searchable list of channels. Bot is public and can be used by everyone, not only you. It does scrape scheduling taking into account feed activity -- inactive feeds are polled once an hour, while active ones can be polled faster based on amount of items posted around same time for last week. Supports ATOM/RSS feeds, custom IV for links, link editing (to use shorter links if website uses full links in RSS feeds).
This is GitHub public mirror, original repo can be found at: