Merge PDF
Combine multiple PDF files into one document. Drag and drop to reorder.
How to merge PDFs
- Click the upload area or drag and drop PDF files
- Arrange files in your preferred order (drag to reorder)
- Click "Merge PDFs" to combine them
- Download your merged PDF instantly
Why use our PDF merger?
Our merge tool runs entirely in your browser. Files never leave your device, keeping sensitive documents private. No signup, no upload limits, no file size caps beyond what your browser can handle.
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Common Use Cases for Merging PDFs
Combining multiple PDFs into one document is useful in many scenarios. Contract management teams merge separate signature pages with agreement bodies. Students combine multiple scanned lecture notes into a single study guide. Business professionals consolidate several reports into one deliverable for client presentations.
Our merge tool handles up to 50 MB per file and supports any number of files your browser can handle. Each page retains its original formatting, fonts, and layout.
Tips for Best Results
For optimal merging, ensure all source PDFs are complete before uploading. Files are processed in the order they appear in the list. Drag to reorder before clicking merge. If you experience slow performance with very large files (100+ pages), try merging in smaller batches. The tool uses pdf-lib to handle all PDF manipulation directly in your browser, which means no data ever leaves your computer.
Technical Specifications
- Input format: PDF (.pdf)
- Output format: Merged PDF (.pdf)
- File limit: Up to 50 MB per file, unlimited number of files
- Processing: 100% client-side via pdf-lib, runs in your browser memory
- Compatibility: All modern browsers (Chrome, Firefox, Edge, Safari)