PDF Merger
Updated June 1, 2025Combine several PDFs into one document and drag pages to reorder them before saving.
Features
- Combine multiple PDF files into one
- Drag-and-drop reorder pages before merging
- Support for unlimited PDF inputs
- Preview page thumbnails
- Download merged result as a single PDF
- 100% client-side—no uploads to servers
Common Use Cases
- Combine multiple reports into a single document
- Merge scanned pages into one complete PDF
- Assemble presentation slides from separate files
- Combine invoices and receipts for expense reports
- Consolidate research papers from different sources
PDF Merging Explained
PDF merging combines two or more PDF files into a single, unified document. This is essential for consolidating reports, assembling presentations, or combining scanned documents.
How merging works: The tool copies all pages from each input PDF, in order, into a new document. You can reorder files before merging to arrange them in any sequence. The result is a complete PDF containing everything from your source files.
Order matters: Files are merged in the order you arrange them. If you want a title page first, place that PDF at the top. Use the drag-and-drop reorder feature to get the sequence right before clicking merge.
Preservation: All text, images, formatting, and page dimensions from the original PDFs are preserved. Bookmarks and interactive elements may not carry over, but the visual content remains intact.
Examples
Input: report-part1.pdf (10 pages) + report-part2.pdf (15 pages)
Result: combined-report.pdf (25 pages)Input: title.pdf + content.pdf + appendix.pdf
Reorder: title first, then content, then appendix
Result: Complete presentation PDFInput: scan-01.pdf through scan-10.pdf (one page each)
Result: full-scan.pdf (10 pages)Frequently Asked Questions
No hard limit, but very large merges (50+ files or 500+ total pages) may be slower depending on your device's memory. For most use cases (2-10 files), merging is nearly instant.
No. Each page retains its original layout, fonts, images, and dimensions. Merging simply concatenates pages—it doesn't modify individual page content.
Each page keeps its original dimensions. A merged PDF can contain mixed page sizes (e.g., A4 and Letter). If you need uniform size, resize pages before or after merging.
Yes! Use drag-and-drop to reorder files in the list. The merge order follows the list order from top to bottom. Rearrange until you're satisfied with the sequence.
File size is roughly the sum of all input PDFs. If your merged result is too large, use the PDF Compressor afterward to reduce the size without losing quality.
No, you'll need to remove the password first. Once all PDFs are unprotected, you can merge them freely with our tool.
💡 Tips
- Arrange files in the order you want them to appear in the final PDF
- Use PDF Compressor after merging if the combined file is too large
- Merge related documents to keep them organized and easy to share
- Check the merged PDF to confirm all pages are present and in order