Converting HTML to PDF can be a challenging task especially when you want to retain layout, fonts, images, and formatting. Traditionally, this process required manual extraction, third-party software, or complex libraries. But with CustomJS PDF API, converting PDF files to clean, web-ready HTML becomes fast, efficient, and fully automated.
This guide will walk you through the process and explain why CustomJS is one of the best tools for the job.
Why Convert HTML to PDF?
Before diving into the “how,” it’s important to understand why this conversion is valuable:
- Responsive Web Display: PDFs are static, but HTML can be adapted for mobile, desktop, or any screen size.
- Search Engine Indexing: HTML content can be crawled by search engines, unlike PDFs, improving SEO.
- Dynamic Integration: Extracted HTML can be embedded in websites, apps, or emails without manual reformatting.
- Easy Automation: Automate document workflows, like generating web previews of invoices or reports.
Advantages of Using CustomJS API for HTML-to-PDF Conversion
CustomJS doesn’t just convert PDFs it offers a full suite of benefits that make it stand out:
- Serverless & Lightweight: No need to set up servers or heavy libraries; everything runs via JavaScript.
- Fast Processing: Get your output almost instantly, even for multi-page PDFs.
- Accurate Conversion: Maintains layout, text formatting, images, and embedded fonts with precision.
- Flexible Automation: Integrates seamlessly with tools like Make.com, n8n, or any JavaScript workflow.
- Cost-Effective: Convert up to 600 documents per month for free—perfect for startups or small teams.
- Secure: All processing can be done serverless, reducing exposure to sensitive data leaks.
Step 1: Get Access to CustomJS PDF API
- Sign up for a CustomJS account.
- Navigate to the PDF API dashboard.
- Copy your API key—you’ll need it to authenticate requests.
Step 2: Prepare Your PDF File
Make sure the PDF file you want to convert is accessible:
- Stored locally, or
- Hosted on a web server with a public URL
CustomJS can handle both methods seamlessly.
Step 3: Call the HTML to PDF Endpoint
CustomJS provides a simple API call for conversion. Using JavaScript, you can convert your PDF like this:
Step 4: Use the PDF Output
Once you have your HTML:
- Embed it directly in web pages
- Display PDFs as interactive web previews
- Integrate with web apps or email templates
This ensures your documents are accessible, SEO-friendly, and fully responsive.
Step 5: Optional Customizations
CustomJS also allows:
- Extracting only certain pages of the PDF
- Preserving or flattening styles depending on your needs
- Batch conversion for multiple PDFs in one request
This flexibility ensures your workflow can scale without extra effort.
Why CustomJS Is the Best Choice?
Compared to traditional tools, CustomJS is designed for modern developers:
- No servers required — unlike legacy libraries or desktop apps
- Affordable pricing — convert hundreds of PDFs for free every month
- Seamless JavaScript integration — perfect for web and serverless environments
- Fast and reliable output — no waiting for slow renderers
In short, CustomJS makes PDF-to-HTML conversion faster, simpler, and far more efficient than ever before.
Final Thoughts
Whether you’re building a web app, generating reports, or creating interactive previews, converting PDFs to HTML is now easier than ever. CustomJS PDF API gives developers and businesses a powerful, reliable, and cost-effective way to automate this process.
By combining speed, accuracy, and serverless convenience, CustomJS ensures that your PDF-to-HTML workflows are scalable, secure, and seamless all while letting you focus on what truly matters: delivering content to users.
