The film's trailer was shown with Gulliver's Travels on December 25, 2010. It was later online on January 3, 2011. A poster was released there after on January 14, 2011. In February 2011, an exclusive online-only trailer was released on the "Wimpy Kid Movie" YouTube channel, officialwimpmovie. Due to the success of the first film in Singapore, the film was released there eight days before the US release on March 17, 2011. The film was released in Brazil on September 16, 2011. A TV spot of the movie was released in March 2011.
Diary of a Wimpy Kid: Rodrick Rules was released on a stand-alone DVD, a special edition double DVD pack, and a Blu-ray/DVD/digital copy combo pack on June 21, 2011. One of the bonus shorts was shown during iParty with Victorious on Nickelodeon at 8:00 PM on June 11, 2011.
The next day, to humiliate Greg, Rodrick reads and steals Greg's diary — in which Greg has written about his crush on Holly — and attempts to hand it over to Holly. Greg, with only his underwear on, chases after Rodrick and takes the diary back, but he accidentally hides in the women's restroom and when Greg returns, Rodrick reveals to Greg that he tapes the whole incident.
