Graphicsmagick use in implementing picture processing node

GraphicsMagick is the swiss army knife of image processing. Called Swiss Army knife.

 

Why use it? 1. Free 2 supports up to 88 kinds of image format processing, to achieve stable and efficient level 3 GB

 

The following is a window operation

 

Step One: Download and install graphicsmagick

 

Official website address:   http://www.graphicsmagick.org/

 

Step two: the installation directory to the environment variable

Successful test page is as follows:

<ignore_js_op> 

 

 

3, node calls graphicsmagick achieve picture compression, picture Cut

 

3-1: installation module of node gm

 

[Shell]  plain text view  Copy the code

?

1	npm install gm

 

3-2: Image compression achieved

 

Server core code:

 

<ignore_js_op>

 

Run server-side script:

[JavaScript]  plain text view  Copy the code

?

1	node mg.js 或则 nodemon mg.js

 

Renderings:

Compression ago:

<ignore_js_op>

After compression:

<ignore_js_op> 

3-3: implement image cropping

 

Server core code:

<ignore_js_op>

 

Run server-side script:

[JavaScript]  plain text view  Copy the code

?

1	node mg.js 或则 nodemon mg.js

 

Renderings:

<ignore_js_op>

 

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