Merge PDF Files
Combine your PDF documents into one download. Processing happens on your device and leaves the original files untouched.
🔒 Your files are processed on your device and are not uploaded to our servers
How to use this tool
- Select all the PDFs together and review the displayed file names.
- Check the file order. To change your selection, select the complete list again.
- Press Start processing, then open the merged PDF and check its document order and page count.
How page order is determined
The tool copies all pages from the first file, followed by all pages from the next file in the browser’s selected-file list. Pages within each source document retain their order. There is no drag-to-reorder file list or individual page removal control in this merge interface.
Your file picker may sort a multi-file selection, so review the displayed list and the output rather than relying solely on the order in which you clicked files.
Review the combined document
Check the first page of each source document in the result. Page sizes and orientations can differ between sources. Interactive forms and digitally signed files need particular care: do not assume rebuilding the document preserves every form behaviour or validates an existing digital signature.
When this tool is useful
- Submit several supporting documents as a single attachment.
- Assemble report sections received as separate PDFs.
- Keep PDF receipts together in one reviewable document.
Privacy and data processing
The browser reads your file and creates the output locally, without uploading file contents to a conversion server. An internet connection may be needed to load the processing library the first time.
Save the result before leaving the page and keep the original for comparison. Downloaded copies remain on your device.
Frequently asked questions
Can I combine image files and PDFs here?
This tool accepts PDF documents. Convert your images to PDF first, then merge that result with your other documents.
Are my original files replaced?
No. The tool creates a new download and does not overwrite files on your device.
Can I drag files to change their order?
Not in the current interface. Check the selected-file list, reselect if needed and inspect the final order.
Does merging also compress the file?
Merging combines pages; it does not guarantee a smaller file. Try PDF compression separately after merging.
What to do next
For a picture attachment, use Images to PDF before combining it with other documents.
Before sharing the combined document, try Compress PDF and compare file sizes.