webimg

中文

This Project base on gm,you shoud install graphicsmagick,If you need to use captcha or text watermark, You should install Ghostscript.

This project is used to generate a thumbnail, add watermarks, generate captchas, batch thumbnail watermark.

INSTALL

npm install webimg

thumbnail example

Webimg('./test.jpg').resize(100,50).thumb('thumb.jpg'); 

Watermark example

Webimg('./test.jpg')
	.markText('test')//text
	.markPos(5)//mark position  123456789
	.fontSize(50)//fongsize
	//.font('foot.ttf')//fontfamily
	.fontColor('#ffffff')//font color
	.watermark('./mark.jpg');

Verification code sample

var captcha = webimg().captcha();
console.log(captcha.getStr()); //get the captcha str

The thumbnail and watermark

Webimg('./test.jpg').params({
	width:100,  
	text:'hahahasdsd', ////watermark text
	fontcolor:'#ffffff',
	fontsize:12
}).thumb();

API

Webimg contructor

thumbnail and watermark
@param string image name

OR
Captcha:
@param int width
@param int height
@param string background color

size

@param function callback
return image size

filesize

@param function 
image's size

outFile

@param string   Set the output file name

font

@param string font path

fontColor

@param string fontcolor (#ffffff)

fontSize

@param int fontsize 

width

@param int width

height

@param int height

**Notice**
Thumbnails generated if only specify the width or height is not specified in accordance with the proportion of automatic calculation,If at the same time high then will be in accordance with the specified contract specifies the width, the proportion is improper cutting automatically

resize

@param int width
@param int height

quality

@param int image quality 1-100

backgroundColor

@param string background color #000000

markImg

@param string watermark image path

markText

@param string Set text watermark

markPos

@param int Sets the position of the watermark
As Follow:
1,2,3
4,5,6
7,8,9

params

@param object    
This method is used for one-time setup parameters
params：
`width` width  @param int
`text` The watermark generated images at the same time If the test img is at the same time Then add images and text watermark random accident @param string
`fontcolor` fontcolor @param string #ffffff
`fontsize` fontsize @param int 
`img` file path @param string 
`pos` mark position @param int 1,2,3,4,5,6,7,8,9
`quality` quality @param int  1-100
`outFile` The output file address Thumbnails, watermark, a verification code
		The format of the output file address Can make the thumb. JPG thumb so the final path consistent with the original image,If it is /aa. JPG with /  Will direct medical specified address

thumb

@param string/null/function   
@param function  
Generated thumbnail in the end the method called
For the batch thumbnail generation can be specified only output file parameters,the callback function can accept a param for the thumb name;

watermark

@param string/null    
Watermark generated output after the address, does not specify, it will automatically generated automatically added after the original file name _t0(_t1,_t2)

captcha

@param string/function
Verification code output address, if you do not specify output address you will need to specify a callback function, the callback function returns the corresponding PNG image Buffer
function(err,buf){

}

captcha Verification code generated

getStr

Returns the generated captcha string

random

Provide authentication code with random string, this method can cover can customize the characters

gm

 Webimg.gm => gm