ImageMagick是一个免费的创建、编辑、合成图片的软件。它可以读取、转换、写入多种格式的图片。图片切割、颜色替换、各种效果的应用，图片的旋转、组合，文本，直线，多边形，椭圆，曲线，附加到图片伸展旋转
Converting HEIF/HEIF image formats to PNG/GIF/JPEG in the browser
Screen{shot,cast} and perform ImageOps on the command line 🌱 🏞️
🔀 Convert small PNG images to SVG Tiny 1.2
🎨 Convert images to 15/16-bit RGB color with dithering
Batch image resizer, optimiser and profiler using ImageMagick convert, OptiPNG, JpegOptim and optional ZopfliPNG, Guetzli and MozJPEG.
A guided AVIF/JPEG XL/WebP conversion utility for JPEG and PNG sources.
UGATITによる画像変換器
A lightweight image converter which supports PNG, PNM, BMP, QOI, JPEG-LS, and H.265 intra-frame.
PHP library to convert between gif, jpeg, png and webp image files
A Node wrapper for the FLIF executable
Here are some libraries about using the browser to do image processing (format conversion), and make the corresponding demo pages.这里收集了一些关于使用浏览器做图片处理（格式转换）的库，并制作了相应的演示页面。
♻️ Reusable, scalable, bash scripts to create and optimize images.
Simple methods to convert between OpenCV's cv::Mat and Qt's QImage and QPixmap
Python tool for downsizing Microsoft PowerPoint presentations (pptx) files.
Convert (and compress) lots of image formats into JPEG, PNG and WebP formats.
Convert HEIC image files to JPG format using libheif