Ever tried loading websites full of selfies and filtered food images on a shabby connection? If your answer is yes, then you know it always leads to tears and frustration. Good thing Mozilla’s got your back — the non-profit behind Firefox just announced a project called mozjpeg, which aims to shrink JPEG file sizes for faster-loading web pages. To get the ball rolling, the group made a fork of an existing JPEG codec and threw in a feature that crunches photos without affecting quality.