Image Transformer

MVP. Crop and resize images. Designed to work under proxy.

Requirements

libmagic, ffmpeg libraries version 4.x, libvips.

Usage

Send the file and options, get the converted file.

 curl -F "file=@image.png" -F "width=320" -F "height=240" -F "crop=true" -F "lq=false" -F "format=jpeg" http://localhost:8080/transform -o test.jpg

Request options

• file - string, original file
• width - integer, resize to width
• height - integer, resize to height
• enlarge - boolean, enlarge image if smaller than requested size
• crop - boolean, crop image
• lq - boolean, genreate low-quality image. It has a much smaller size, but it takes longer to convert.
• force - boolean, ignore original aspect ratio.
• gravity - enum string, choose area to crop. By default uses smart crop. Expected values:
  • north
  • center
  • south
  • west
  • east
• format - enum string, choose output image format. By default uses input file format. Expected values:
  • jpeg
  • webp
  • png

Some options do not work without other options. For example, it is impossible to crop image if only width was specified.

Limitations

Only jpeg, webp or png expected. Other formats not implemented.