https://github.com/chunyenHuang/hummusRecipe
https://www.npmjs.com/package/hummus-recipe
现行有许多生成PDF的工具，但是唯独欠缺简单好用的"修改"工具。
HummusRecipe建构在HummusJS(https://github.com/galkahana/HummusJS)之上，
大幅简化了使用上的难度，也增加了许多亲切的API。
中文字型需另外下载
https://github.com/chunyenHuang/hummusRecipe/blob/master/tests/font.js
安装
npm i hummus-recipe
修改PDF
const HummusRecipe = require('hummus-recipe');
const pdfDoc = new HummusRecipe('input.pdf', 'output.pdf');
pdfDoc
.editPage(1)
.text('浮水印', 'center', 250, {
color: '066099',
fontSize: 30,
bold: true,
font: 'Helvatica',
align: 'center center',
opacity: 0.2,
rotation: 180
})
.rectangle(20, 20, 40, 100)
.comment('添加Comment annotation', 200, 300)
.image('/path/to/image.jpg', {width: 300, keepAspectRatio: true})
.endPage()
//
.editPage(2)
.comment('Add 2nd comment annotaion', 200, 100)
.endPage()
.endPDF();
生成PDF
const HummusRecipe = require('hummus-recipe');
const pdfDoc = new HummusRecipe('new', '/output.pdf',{
version: 1.6,
author: 'John Doe',
title: 'Hummus Recipe',
subject: 'A brand new PDF'
});
pdfDoc
.createPage('letter-size')
.text('哈囉~ \n 你好', 'center', 250, {
color: '066099',
fontSize: 30,
bold: true,
font: 'Helvatica',
align: 'center center',
opacity: 0.8,
rotation: 180
})
.endPage()
.endPDF();