How to open a padlock without a key is a question you should not ask when it is your padlock. Nevertheless you will find while internet researches several ways for trying to open a padlock without a key such as picking, hammering, wrenching, bolt cutting and so on. A lot of people always try to find ways for breaking padlocks. If you want to start in a competition for showing your talents, you should consider lock picking. For some people this is an art or chess without a chessboard. Shimming is as well an option. But – stay on the legal side please.