gif-bpm-counter detect bpm (range 70 ~ 180) of gif from any url How to use heroku app create git push heroku master example http://gif-bpm-counter.herokuapp.com usage http://gif-bpm-counter.herokuapp.com/?url=https://78.media.tumblr.com/afea78fc57cad13e6a9669083e8a8530/tumblr_onka1stxOS1uvues3o1_500.gif this url return 125, this is the BPM of gif. licence MIT