The function of uploading images to generate thumbnails has been implemented using gm. You can refer to this library, but your server must be pre-installed with GraphicsMagick or ImageMagick. http://aheckmann.github.io/gm/
I have had related needs when using NW.js as a client before. I have found some implementations and experienced them myself. Let me give you recommendations for the two situations.
If it is pure Node.js, I recommend a domestic images library https://github.com/zhangyuanw... It imitates JQ syntax, Chinese documentation, and does not rely on other image processing libraries.
If you are using NW.js or Electron, which can use canvas, I recommend using canvas directly to implement it. You can take screenshots, pick colors, get the pixel values of all pixels, etc., and it is easy to transplant
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The function of uploading images to generate thumbnails has been implemented using gm. You can refer to this library, but your server must be pre-installed with GraphicsMagick or ImageMagick.
http://aheckmann.github.io/gm/
I have had related needs when using NW.js as a client before. I have found some implementations and experienced them myself. Let me give you recommendations for the two situations.
If it is pure Node.js, I recommend a domestic images library https://github.com/zhangyuanw... It imitates JQ syntax, Chinese documentation, and does not rely on other image processing libraries.
If you are using NW.js or Electron, which can use canvas, I recommend using canvas directly to implement it. You can take screenshots, pick colors, get the pixel values of all pixels, etc., and it is easy to transplant