手机上图片压缩怎么操作

How to Choose an Image Compression Format: Key Points for Beginners

With the right format and parameters, a photo's file size can be reduced to one-third of the original with almost no visible difference. This article explains the applicable boundaries of JPEG, PNG, and WebP by scenario, clarifies the difference between compression and resizing, and provides solutions for compressing to a specified size, phone operation, and upload errors—beginners can get started right after reading.