Goimgrz(Go Image Resize) - 一款基于命令行的图片缩放工具

Goimgrz(Go Image Resize)是一款基于Golang开发的，命令行下针对图片URL资源、文件，进行图片缩放处理的命令行工具，支持图片目录扫描、文件名过滤、文件缩放方式、插值处理等功能！

Github地址：https://github.com/tkstorm/goimgrz

1. 特性

• Local文件、url图像资源文件调整大小，支持指定宽度和高度设置；
• 扫描本地文件目录图像并调整其大小；
• 图像文件大小，名称过滤；
• Resize插值函数规范；
• Jpeg质量设置；
• 支持批量和并发图像调整大小处理；

2. 安装

go get -v github.com/tkstorm/goimgrz/cmd/goimgrz

3. 命令行帮助

$ goimgrz -h
Usage of goimgrz:
  -crawler_url string
      the crawler url used by girls download the http images and resize only matched image files
  -dir string
      scan the dir where image inside to be resize
  -dst string
      the output dir where image after resize store (default "/tmp/goimgrz")
  -height uint
      set resize image's height
  -img string
      the local image file which to be resize
  -imgs string
      local image files which to be resize, separated by ','
  -interp uint
      the provided interpolation functions support (from fast to slow execution time), 0:NearestNeighbor,1:Bilinear,2:Bicubic,3:MitchellNetravali,4:Lanczos2,5:Lanczos3
  -name string
      using shell pattern to filter image, like *.png (default "*")
  -quality int
      set resize image's quality percent (default 75)
  -size string
      using file size to filter image, like +200k
  -url string
      the image's http(s) url to be resize, image resource(url|urls|img|imgs|dir) at least need set one
  -urls string
      image's http(s) urls to be resize, separated by ','
  -verbose
      append water image
  -water_img string
      append water image
  -width uint
      set resize image's width, default width and height is 0 represent origin image

4. 使用简单

$ goimgrz -img ./testdata/gopher2018.png -width 400
2019/06/25 16:10:16 resize ok: /tmp/goimgrz/gopher2018.png (inputW=400,inputH=0)

$ goimgrz -dir ./testdata -width 500  -dst /tmp/goimgrz/500
2019/06/25 16:11:22 resize ok: /tmp/goimgrz/500/gopher2018.png (inputW=500,inputH=0)
2019/06/25 16:11:22 resize ok: /tmp/goimgrz/500/web_bg.jpg (inputW=500,inputH=0)
2019/06/25 16:11:23 resize ok: /tmp/goimgrz/500/IMG_2489.JPG (inputW=500,inputH=0)

$ goimgrz -urls https://cdn-images-1.medium.com/max/1600/1\*k74qnaAcJd3bzRj7PnLIbg.jpeg,https://cdn-images-1.medium.com/max/2600/0\*jraDH1ztolpSmT9I
2019/06/22 18:49:29 resize ok: /tmp/1*k74qnaAcJd3bzRj7PnLIbg.jpeg (inputW=300,inputH=0)
2019/06/22 18:49:30 resize ok: /tmp/0*jraDH1ztolpSmT9I (inputW=300,inputH=0)

$ goimgrz -url https://cdn-images-1.medium.com/max/1600/1\*n1kWgo0dPS80uoE430hqSQ.jpeg -width 300
2019/06/22 18:42:17 resize ok: /tmp/1*n1kWgo0dPS80uoE430hqSQ.jpeg (inputW=300,inputH=0)

$ goimgrz -img ./testdata/IMG_2489.JPG -width 500 -interp 2
2019/06/25 16:16:40 resize ok: /tmp/goimgrz/IMG_2489.JPG (inputW=500,inputH=0)

$ goimgrz -dir ./testdata -size +1M
2019/06/23 23:02:20 resize ok: /tmp/IMG_2489.JPG (inputW=300,inputH=0)

$ goimgrz -dir ./testdata -size -1M -name '*/*.png'
2019/06/23 23:08:22 resize ok: /tmp/gopher2018.png (inputW=300,inputH=0)

5. Todo

• Http请求超时设置
• Http代理设置（下载特殊网络图像时）
• Crawler url支持（当需要一个html页面的图像时）
• Short Param Support
• Concurrent资源设置（现在没有限制并发资源设置）
• More图像格式支持（现在只支持jpeg，png，gif）