Generating Vector PDFs from HTML in the Browser: A Deep Dive into dompdf.js

Live Demo: https://dompdfjs.lisky.com.cn GitHub: https://github.com/lmn1919/dompdf.js The Pain Points of Frontend PDF Generation Exporting web content to PDF is a common requirement that sounds simple but quickly becomes complex. Whether it's data reports, invoices, contracts, resumes, or certificates, almost every web application faces this challenge at some point. Current solutions each have significant drawbacks: Server-side rendering (Puppeteer, wkhtmltopdf, etc.) is powerful but requires maintaining Node.js services, consumes substantial resources under high concurrency, and adds backend coordination overhead. Screenshot-to-PDF (html2canvas + jsPDF) is the most popular frontend approach, but it's fundamentally rasterization—taking a screenshot of the DOM and stuffing it into a PDF. This results in large file sizes, unselectable text, blurry zoom, and the Canvas maximum pixel height limit (typically 16,384px) prevents generating long documents. Pure frontend drawing libraries (jsPD