📄 PDF Tool
PDF Merger — Merge PDF Files Online Free
Combine multiple PDF files into a single PDF. Works 100% in your browser — your files never leave your device.
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Click to select PDF files or drag & drop
Select multiple PDFs • Max 50MB total✓ PDF merged successfully! Click below to download.
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How to Merge PDF Files Online
- Click "Select PDF Files" or drag & drop your PDFs into the box above
- Arrange the PDFs in the desired order
- Click "Merge PDFs" — this happens entirely in your browser
- Download the merged PDF file
ℹ️ This tool uses the open-source PDF-lib library. No files are uploaded
to any server. Your PDFs remain 100% private on your device.
Is there a limit on the number of PDFs I can merge?
There's no hard limit on the number of files, but very large PDFs (50MB+) may
take longer to process in the browser. For best performance, keep total size under 50MB.
Will the merged PDF maintain quality?
Yes! PDF-lib merges PDFs losslessly, preserving all text, images, and formatting
at original quality.