Merge PDF Files
Combine multiple PDF documents into one file. Simple, fast, and secure with drag-and-drop reordering.
Merge Settings
Select PDF files to merge
Upload 2 or more PDF files to merge them into a single document
Powerful PDF Merging Features
Everything you need to combine PDF documents efficiently
Drag & Drop Merging
Simply drag PDF files to upload and reorder them exactly how you want
Custom Order
Arrange your PDF files in any order before merging them together
Secure Processing
All PDF merging happens locally in your browser for maximum privacy
Batch Processing
Merge multiple PDF files at once to save time and effort
Instant Download
Get your merged PDF file immediately after processing completes
No Size Limits
Merge PDFs of any size without restrictions or file count limits
How to Merge PDF Files
Combine your PDF documents in just three simple steps
Upload PDF Files
Select or drag multiple PDF files that you want to merge together
Arrange Order
Drag and drop files to reorder them exactly how you want them combined
Download Merged PDF
Click merge and instantly download your combined PDF document
PDF Merge FAQ
Complete guide to merging PDF files, organizing documents, and troubleshooting common issues
How many PDF files can I merge at once?
You can merge up to 20 PDF files in a single operation, with each file up to 100MB. For larger projects, consider merging in batches or contact support for enterprise solutions.
Can I change the order of pages and files?
Yes! Simply drag and drop PDF files to rearrange them in any order before merging. The first file in the list will appear first in the merged document, followed by the others in sequence.
Will the quality and formatting be preserved?
Absolutely! The original quality, formatting, fonts, images, and layout of your PDF files are maintained exactly in the merged document. No quality loss occurs during the merging process.
Is it safe to merge PDFs online?
Yes, completely safe! Our tool processes everything locally in your browser using JavaScript. Your PDF files never leave your device or get uploaded to any server, ensuring maximum privacy and security.
What happens to bookmarks, links, and form fields?
Internal bookmarks and links within individual PDFs are preserved. However, cross-document links between merged files may need updating. Form fields are maintained but may require reconfiguration in the merged document.
Your files never leave your device
PDF Merger - Free Online PDF Merge Tool runs entirely in your browser. We cannot see, store, or even touch your files — conversion is 100% local.
All processing happens in your browser using WebAssembly and Web Workers.
No file is uploaded to any server — not ours, not a third party's.
Nothing is retained. Close the tab and your files are gone from memory.
After the initial page load, you can even disconnect from the internet.
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