PDF Merge | Combine PDF Files (Free, Local Processing)
Merge multiple PDF files into one neatly organized document with drag-and-drop ordering. All processing happens locally in your browser—fast, private, and no uploads.
How to Use This Tool
- 1
Upload or drag & drop PDF files
- 2
Arrange file order using drag & drop or arrows
- 3
Review file names and total page count
- 4
Click "Merge PDFs" to combine
- 5
Download your merged PDF instantly
Use Cases & Examples
Merge scanned documents
Combine scanned pages into one PDF archive for easier storage and sharing.
Consolidate work documents
Group contracts, invoices, and forms into a single organized file.
Merge presentation materials
Join slides and appendices into one presentation or report PDF.
How PDF Merge Works
pdf-lib loads each source file and copies all pages without re-encoding, preserving fonts and layout.
Documents are merged following your chosen order while keeping structure intact.
Everything runs client-side in your browser for speed and complete privacy.
Frequently Asked Questions
Q.Is it safe to merge PDFs online?
A. Yes, all merging happens locally in your browser; files never leave your device.
Q.How many files can I merge?
A. Up to about 20 files or roughly 100 pages depending on memory and browser limits.
Q.Can I change the order of files?
A. Yes, reorder files anytime with drag-and-drop or arrow controls.
Q.Does merging reduce quality?
A. No, merging is lossless—pages are copied directly without re-encoding.
Q.Can I merge password-protected PDFs?
A. No, encrypted PDFs must be unlocked before merging.
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