"Careful" is a song by the American rock band Paramore, and is the fourth single from their third studio album, Brand New Eyes. The song charted on the Billboard Hot 100 the week Brand New Eyes was released before it was announced as a single. It charted due to digital downloads. Several radio websites announced this as an upcoming US single.
It was announced on the official Paramore fanclub that a video containing live footage of the song would be released on June 8, 2010. The video was shot and edited by Brandon Chesbro, who also directed the video for the band's previous single "The Only Exception". The video was released via Fueled by Ramen's YouTube account. It contains performances of the song in many concerts throughout 2009 and includes clips from their Brisbane Soundwave Tour and also at their one-off performance at Festival Hall in Melbourne, Australia. The clip also contains footage from their 2010 Spring Tour as well as their 2009 Fall Tour. It also shows clips of the band off stage. The music video is also the third of Paramore's videos to be a compilation of performances from various concerts, the first two being "All We Know" from All We Know Is Falling and "Hallelujah" from Riot!.