Searching for " The Dark Knight 2008 Hindi free" reveals that while the film is widely available on major platforms, there are no legitimate sites offering it for free streaming

Released in 2008, The Dark Knight revolutionized the superhero genre, transitioning it from comic book fantasy into a gritty, realistic crime thriller. In India, the film achieved massive box office success, largely driven by its exceptional Hindi dubbing.

due to intense violence and disturbing themes, and is generally not recommended for children under 13. The Full Trilogy

The film is available in Hindi language on various platforms: