easyqrcodejs-nodejs

EasyQRCodeJS-NodeJS

EasyQRCodeJS-NodeJS is a NodeJS server side QRCode image generator. Support setting Dot style, Logo, Background image, Colorful, Title and more.

EasyQRCodeJS-NodeJS 是一个 NodeJS 环境下的服务端 JavaScript QRCode 图片生成模块。支持点状风格，Logo，背景图片，规则色彩控制，标题等设置。

Table of contents

• Table of contents
• Choose what you need
• Feature
• Try It!
• Demo preview
• QR Code Structure
• Installation
• Basic Usages
• QRCode API
• Object
• Options
• Methods
• License
• EasyQRCodeJS-NodeJS-Premium
• End

Choose what you need

Project	Support
EasyQRCodeJS	Running with DOM on CLIENT-SIDE . Browser(IE6+, Chrome, Firefox, Safari, Opera, Mobile Safari, Android, Windows Mobile, ETC.), Electron, NW.js, ETC.
EasyQRCodeJS-NodeJS	Running without DOM on SERVER-SIDE. Save image to file or get data url text. NodeJS, Electron, NW.js, ETC.

Feature

• English

  • Save QRCode image file without DOM on server side

  • Support save PNG image file

  • Support get standard base64 image data url text: data:image/png;base64, ...

  • Required Patterns that support dot style

  • Support for Quiet Zone settings

  • Support custom Position Pattern inner fill and outer border color

  • Support custom Alignment Pattern inner fill and outer border color

  • Support custom Timing Patterns vertical, horizontal color

  • Support Logo images (including transparent PNG images)

  • Support Background Image

  • Support for title, subtitle settings

• 中文

  • 无需 DOM 的服务端 QRCode 图片保存

  • 支持存储为 PNG 图片

  • 支持获得 Base64 编码的标准图形 URL 字符串：data:image/png;base64, ...

  • 支持点形风格的 Required Patterns

  • 支持 Quiet Zone 设置

  • 支持自定义 Position Pattern 内填充和外边框颜色

  • 支持自定义 Alignment Pattern 内填充和外边框颜色

  • 支持自定义 Timing Patterns 垂直，水平颜色

  • 支持 Logo 图片（包括背景透明的 PNG 图片）

  • 支持 Background Image 背景图片

  • 支持标题，副标题设置

Try It!

Try It!

Demo preview

QR Code Structure

Installation

npm install easyqrcodejs-nodejs

Basic Usages

const QRCode = require('easyqrcodejs-nodejs');

// Options
var options = {
	text: "www.easyproject.cn/donation"
};

// New instance with options
var qrcode = new QRCode(options);

// Save QRCode image
qrcode.saveImage({
	path: 'q.png' // save path
});

QRCode API

Object

var qrcode = new QRCode(options);

Options

 var options = {
		// ====== Basic
		text: "https://github.com/ushelp/EasyQRCodeJS",
		width: 256,
		height: 256,
		colorDark : "#000000",
		colorLight : "#ffffff",
		correctLevel : QRCode.CorrectLevel.H, // L, M, Q, H
		dotScale: 1 // Must be greater than 0, less than or equal to 1. default is 1
		
		// ====== Quiet Zone
		/*
		quietZone: 0,
		quietZoneColor: 'transparent',
		*/
		
		// ====== Logo
		/*
		logo:"../demo/logo.png", // Relative address, relative to `easy.qrcode.min.js`
		logo:"http://127.0.0.1:8020/easy-qrcodejs/demo/logo.png", 
		logoWidth:80, // widht. default is automatic width
		logoHeight:80 // height. default is automatic height
		logoBackgroundColor:'#fffff', // Logo backgroud color, Invalid when `logBgTransparent` is true; default is '#ffffff'
		logoBackgroundTransparent:false, // Whether use transparent image, default is false
		*/
	
		// ====== Backgroud Image
		/*
		backgroundImage: '', // Background Image
		backgroundImageAlpha: 1, // Background image transparency, value between 0 and 1. default is 1. 
		autoColor: false,
		*/
		
		// ====== Colorful
		// === Posotion Pattern(Eye) Color
		/*
		PO: '#e1622f', // Global Posotion Outer color. if not set, the defaut is `colorDark`
		PI: '#aa5b71', // Global Posotion Inner color. if not set, the defaut is `colorDark`
		PO_TL:'', // Posotion Outer color - Top Left 
		PI_TL:'', // Posotion Inner color - Top Left 
		PO_TR:'', // Posotion Outer color - Top Right 
		PI_TR:'', // Posotion Inner color - Top Right 
		PO_BL:'', // Posotion Outer color - Bottom Left 
		PI_BL:'', // Posotion Inner color - Bottom Left 
		*/
		// === Alignment Color
		/*
		AO: '', // Alignment Outer. if not set, the defaut is `colorDark`
		AI: '', // Alignment Inner. if not set, the defaut is `colorDark`
		*/
		// === Timing Pattern Color
		/*
		timing: '#e1622f', // Global Timing color. if not set, the defaut is `colorDark`
		timing_H: '', // Horizontal timing color
		timing_V: '', // Vertical timing color
		*/
		
		// ====== Title
		/*
		title: 'QR Title', // content 
		titleFont: "bold 18px Arial", //font. default is "bold 16px Arial"
		titleColor: "#004284", // color. default is "#000"
		titleBackgroundColor: "#fff", // background color. default is "#fff"
		titleHeight: 70, // height, including subTitle. default is 0
		titleTop: 25, // draws y coordinates. default is 30
		*/
	   
		// ====== SubTitle
		/*
		subTitle: 'QR subTitle', // content
		subTitleFont: "14px Arial", // font. default is "14px Arial"
		subTitleColor: "#004284", // color. default is "4F4F4F"
		subTitleTop: 40, // draws y coordinates. default is 0
		*/
	   
		// ===== Event Handler
		/*
		onRenderingStart: undefined,
		*/
	   
		// ==== Images format
		/*
		format: 'PNG', // 'PNG', 'JPG'
		compressionLevel: 6, // ZLIB compression level (0-9). default is 6
		quality: 0.75, // An object specifying the quality (0 to 1). default is 0.75. (JPGs only) 
		*/
	   
		// ==== Versions
		/*
		version: 0 // The symbol versions of QR Code range from Version 1 to Version 40. default 0 means automatically choose the closest version based on the text length.
		
		*/           
}

Option	Required	Type	Defaults	Description
Basic options	---	---	---	---
text	Y	String	''	Text
width	N	Number	256	Width
height	N	Number	256	Height
colorDark	N	String	#000000	Dark CSS color
colorLight	N	String	#ffffff	Light CSS color
correctLevel	N	Enum	QRCode.CorrectLevel.H	QRCode.CorrectLevel.H QRCode.CorrectLevel.Q QRCode.CorrectLevel.M QRCode.CorrectLevel.L
dotScale	N	Number	1.0	Dot style required Patterns. Ranges: 0-1.0
Quiet Zone	---	---	---	---
quietZone	N	Number	0	Quiet Zone size
quietZoneColor	N	String	transparent	Background CSS color to Quiet Zone
Logo options	---	---	---	---
logo	N	String	undefined	Logo Image Path or Base64 encoded image. If use relative address, relative to easy.qrcode.min.js
logoWidth	N	Number	undefined	Height
logoHeight	N	Number	undefined	Width
logoBackgroundTransparent	N	Boolean	false	Whether the background transparent image(PNG) shows transparency. When true, logoBackgroundColor is invalid
logoBackgroundColor	N	String	#ffffff	Set Background CSS Color when image background transparent. Valid when logoBackgroundTransparent is false
Backgroud Image options	---	---	---	---
backgroundImage	N	String	undefined	Background Image Path or Base64 encoded image. If use relative address, relative to easy.qrcode.min.js
backgroundImageAlpha	N	Number	1.0	Background image transparency. Ranges: 0-1.0
autoColor	N	Boolean	false	Automatic color adjustment
Posotion Pattern Color options	---	---	---	---
PO	N	String	undefined	Global Posotion Outer CSS color. if not set, the defaut is colorDark
PI	N	String	undefined	Global Posotion Inner CSS color. if not set, the defaut is colorDark
PO_TL	N	String	undefined	Posotion Outer CSS color - Top Left
PI_TL	N	String	undefined	Posotion Inner CSS color - Top Left
PO_TR	N	String	undefined	Posotion Outer CSS color - Top Right
PI_TR	N	String	undefined	Posotion Inner CSS color - Top Right
PO_BL	N	String	undefined	Posotion Outer CSS color - Bottom Left
PI_BL	N	String	undefined	Posotion Inner CSS color - Bottom Left
Alignment Color options	---	---	---	---
AO	N	String	undefined	Alignment Outer CSS color. if not set, the defaut is colorDark
AI	N	String	undefined	Alignment Inner CSS color. if not set, the defaut is colorDark
Timing Pattern Color options	---	---	---	---
timing	N	String	undefined	Global Timing CSS color. if not set, the defaut is colorDark
timing_H	N	String	undefined	Horizontal timing CSS color
timing_V	N	String	undefined	Vertical timing CSS color
Title options	---	---	---	---
title	N	String	''
titleFont	N	String	bold 16px Arial	CSS Font
titleColor	N	String	#000000	CSS color
titleBackgroundColor	N	String	#ffffff	CSS color
titleHeight	N	Number	0	Title Height, Include subTitle
titleTop	N	Number	30	draws y coordinates.
SubTitle options	---	---	---	---
subTitle	N	String	''
subTitleFont	N	String	14px Arial	CSS Font
subTitleColor	N	String	#4F4F4F	CSS color
subTitleTop	N	Number	0	draws y coordinates. default is 0
Event Handler options	---	---	---	---
onRenderingStart(qrCodeOptions)	N	Function	undefined	Callback function when rendering start work. can use to hide loading state or handling.
Images format options	---	---	---	---
format	N	String	PNG	'PNG' or 'JPG'
compressionLevel	N	Number	6	ZLIB compression level between 0 and 9. (PNGs only)
quality	N	Number	0.75	An object specifying the quality (0 to 1). (JPGs only)
Version options	---	---	---	---
version	N	Number	0	The symbol versions of QR Code range from Version 1 to Version 40. default 0 means automatically choose the closest version based on the text length. Information capacity and versions of QR Codes NOTE: If you set a value less than the minimum version available for text, the minimum version is automatically used.

Methods

• saveImage(ImagesFormatOptions)

  //  Save PNG Images to file
  qrcode.saveImage({
  	path: 'q.png' // file path
  });
  

• toDataURL()

  // Get standard base64 image data url text: 'data:image/png;base64, ...'
  qrcode.toDataURL().then(data=>{
  	console.info('======QRCode PNG DataURL======')
  	console.info(data)
  });
  

License

MIT License

EasyQRCodeJS-NodeJS-Premium

With EasyQRCodeJS-NodeJS-Premium you can use Canvas to customize any element, Such as Eye frame sharp, Eye ball sharp, QR Body block sharp, etc.

If you need more functions, we can provide you with customized development of API libraries or products. please contact me to buy.

EasyQRCodeJS-NodeJS-Premium 让您可以在 QRCode 中通过 Canvas 自定义任何喜欢的元素，例如 Eye frame sharp, Eye ball sharp, QR Body block sharp 等等。

如果您需要更多功能，我们可以为您提供 API 库或产品的定制开发。请联系我购买。

End

Email：[e-mail]

http://www.easyproject.cn

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