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browser-image-compress

v1.0.2

Published

A image compress tool work in browser

Downloads

1

Readme

简介

  • 一个不依赖服务器对图片进行压缩的库, 目前支持 png, jpeg, webp, bmp
  • 借助 wasm 的方式,让c++代码,和c++类库高效运行在浏览器里面
  • png 压缩使用了业界著名的 libpngquant,效果优异

使用

  1. 安装 npm install -S @edu/browser-image-compress
  2. 引入 & 使用
    import compress from '@edu/browser-image-compress'
    
    var fileDialog = document.querySelector('input[type=file]')
    var imgPreview = document.querySelector('img.preview')
    
    fileDialog.onchange = async ({ target: { files } }) => {
      let file = files[0]
      const result = await compress(file, {
        quality: 70, 
        maxWidth: 500, //最大宽度
        ditherring: 0.7, //色彩抖动水平
        mode: 2, //压缩模式,1为指定最大颜色数量,规则为 quality * 2; 2为自动计算最大颜色数量
        debug: true, // 打开日志开关
      })
      imgPreview.src =  URL.createObjectURL(res);
    }

TODO

  • [x] png 格式压缩
  • [x] jpeg, bmp格式压缩
  • [ ] gif 格式压缩

开发

  • js部分开发

    1. 安装依赖 npm run install
    2. 开发模式运行 npm run dev
    3. 生产模式编译 npm run build
    4. 运行demo npm run demo
  • c++部分开发

参考