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How to Automatically Merge PDFs in JavaScript Using pdf.js

Summary: Learn how to merge multiple PDF files into one seamlessly using `pdf.js` in JavaScript. Automate your PDF handling tasks without the hassle of manual uploads. --- How to Automatically Merge PDFs in JavaScript Using pdf.js Working with multiple PDF files can often be a cumbersome task, especially when you need to combine them into a single document. Manual uploads and mergers can be monotonous and time-consuming. Fortunately, JavaScript provides a more elegant and automated solution to this problem using the pdf.js library. In this guide, we will demonstrate how to automatically merge PDFs without relying on manual uploads, making your document handling workflow more efficient and streamlined. What is pdf.js? Initially developed by Mozilla, pdf.js is a popular JavaScript library that allows you to render PDFs in a browser. But its capabilities extend much further, including the ability to manipulate PDF files programmatically. For this guide, we'll focus on leveraging pdf.js to merge multiple PDF files into one. Setup First, make sure to include pdf.js in your project. If you're using npm, you can install it via: [[See Video to Reveal this Text or Code Snippet]] Alternatively, you can include it directly in your HTML file via a CDN. [[See Video to Reveal this Text or Code Snippet]] Step-by-Step Guide Load the PDFs To begin, you need to load the PDF files you want to merge. We assume you have these PDFs stored locally or accessible via URLs. [[See Video to Reveal this Text or Code Snippet]] Merge PDFs Next, use pdf-lib, another JavaScript library, to merge the fetched PDFs. [[See Video to Reveal this Text or Code Snippet]] Execute the Merge Finally, you can call the mergePDFs function, providing an array of URLs or paths to your PDF files. [[See Video to Reveal this Text or Code Snippet]] Conclusion Using pdf.js and pdf-lib, you can automatically merge PDF files efficiently without the need for manual uploads. This technique simplifies your document management tasks and can easily be integrated into larger JavaScript applications or workflows. With these tools at your disposal, you can take your PDF handling capabilities to the next level. We hope you found this guide useful. Happy coding!