While "300MB" sites were popular, they operated outside the legal framework: Copyright Infringement:
In 2021,, search queries for "allmovieshub 300mb" highlighted a significant trend in online content consumption: the demand for high-compression, low-bandwidth video files. AllMoviesHub was a prominent example of a piracy website offering full-length feature films compressed into small file sizes (often around 300MB to 500MB) while attempting to maintain watchable quality (typically 480p or 720p). 2. The "300MB" Phenomenon allmovieshub 300mb 2021
I notice you’re asking for a review of content from with “300mb” and “2021” — this typically refers to a pirate website that distributes compressed, copyrighted movies illegally. While "300MB" sites were popular, they operated outside