📑 PDF Merge
Combine multiple PDF files into a single document. Drag to reorder. All processing happens in your browser.
Click to upload or drag & drop PDF files
Select multiple PDFs to merge
📖 How PDF Merging Works
Our PDF merger uses the pdf-lib library to process PDF files entirely in your browser. When you merge PDFs, each page from every file is copied into a new combined document while preserving formatting, images, links, and text. The original files remain unchanged.
Unlike many online PDF tools that require uploading files to a server, KitPunch processes everything locally on your device. This means your documents never leave your computer, making it completely private and secure — ideal for sensitive documents like contracts, tax forms, or personal records.
❓ Frequently Asked Questions
No. All processing happens locally in your browser using JavaScript. Your files never leave your device. This makes it safe to merge confidential documents.
Since processing happens in your browser, the limit depends on your device's available memory. Most devices can handle PDFs up to 100MB without issues. For very large files, ensure you have enough RAM available.
Yes! Simply drag and drop the files in the list to change their order. The merged document will follow the order shown in the file list.
📖 What Is PDF Merging?
PDF merging combines multiple PDF files into a single document while preserving all formatting, images, links, bookmarks, and text. This is essential for assembling reports from multiple sources, combining scanned documents, creating portfolios, and organizing multi-chapter documents.
Unlike cloud-based PDF tools that require uploading sensitive documents to remote servers, KitPunch processes everything locally using the pdf-lib library in your browser. Your contracts, tax forms, medical records, and business documents never leave your device.
🚀 How to Use This Tool
- Drag and drop or select multiple PDF files
- Reorder files by dragging them in the list
- Click Merge to combine all PDFs
- Download the single merged document
💡 Tips & Best Practices
Document Tip: Merge order matters — arrange files in the sequence you want them in the final document. For large merges (50+ files), close other browser tabs to free memory. The tool preserves hyperlinks and bookmarks from source PDFs.