[Linux] 各种文件格式转换工具 (File type convert tools)

pdf 转成图片，图片png 压缩成 jpg

api handle image on golang, watermar, convert2jpg

WaterMarkIt is a simple web application that allows you to easily add watermarks to a list of images, convert them to JPG format, and download them as a ZIP archive. You can configure the watermark size and position and save these settings locally in your browser.

With this tool, users can easily select a folder containing PNG images, set the output folder for the converted JPG images, adjust quality and dimensions, and initiate the conversion process.

Convert images from PNG to JPG