Javascript / jQuery压缩图像正确的oreantation post并使用Ajax Laravel 5.2保存到控制器

I am using Laravel 5.2 framework. My application requirements are to do a client side image compression to minimize data bandwidth consumption. To achieve this I am looking around for solutions in JavaScript and/ or jQuery. From my previous implementation of image upload as multi-part data using form post I discovered that some images flip upon upload to the server so I need to do a client side orientation correction before image upload. The images are to be uploaded using ajax. The resulting images must have 240x 240 dimensions.I am using Laravel 5.2 framework. My applicatio