Merging multiple PDF files into one document makes sharing, organising, and archiving much simpler. Whether combining report chapters, assembling a portfolio, or gathering signed contracts, PDF merging saves time and keeps everything in one place.
Common PDF Merge Use Cases
- Combining scanned document pages into a single file
- Assembling a report from multiple section PDFs
- Merging signed contract pages into one document
- Creating a portfolio from individual project PDFs
- Combining monthly bank statements into an annual file
How to Merge PDF Files Free
Visit imgresizr.com's PDF Tools section and upload all the PDFs you want to merge. Arrange them in the order you want them to appear in the merged document — drag to reorder. Click Merge and download your combined PDF. There is no limit on the number of files you can merge, and the tool preserves all formatting, bookmarks, and page sizes from each original file.
Tips for PDF Merging
- Arrange files in the correct order before merging — reordering after is more work
- Make sure all PDFs use the same page size for a uniform look (all A4, or all letter)
- Add a table of contents page at the beginning for long merged documents
- Rename the merged file descriptively (e.g., "Annual-Report-2025.pdf") before distributing
- Add page numbers to the merged PDF using the PDF editing tools if needed
File Size After Merging
The merged PDF file size is approximately the sum of all input files. If the resulting file is too large for email, use imgresizr.com's PDF compress tool after merging to reduce the file size without visible quality loss.
Merge PDF files for free at imgresizr.com — no file size limits, no account required, instant download.