https://github.com/chunyenHuang/hummusRecipe https://www.npmjs.com/package/hummus-recipe

現行有許多生成PDF的工具，但是唯獨欠缺撿單好用的"修改"工具。HummusRecipe建構在HummusJS(https://github.com/galkahana/HummusJS)之上，大幅簡化了使用上的難度，也增加了許多親切的API。

安裝

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();