This stands for "Web Download." Unlike a "Web-Rip" (which records a stream), a WEB-DL is a lossless extraction of the file directly from a streaming service (like Netflix, Prime Video, or Hotstar). This means there are no on-screen watermarks and the quality is as close to the original source as possible.
The file string "Cat.S01.1080p.WEB-DL.AAC.5.1.ESub.x264-HDHub4u" refers to the first season of the Indian crime thriller series , released on on December 9, 2022. The Times of India Series Overview Cat.S01.1080p.WEB-DL.AAC.5.1.ESub.x264-HDHub4u....