Merge PDFs
Combine PDF files in your chosen order. Optionally insert blank pages so each document starts on a front side.
Output PDFChoose filesProcessed on your device
A blank page is inserted after each odd-length document except the last.
Example
Merging a three-page document and a two-page document with duplex alignment produces six pages: 3 + 1 blank + 2.
Supported features and limits
- Check the file order before saving. Page sizes are kept unless you use the A4 tool separately.
- Encrypted PDFs are not supported. Bookmarks, signatures, attachments, forms, and annotations may not be preserved. Open the result and check important documents before using them.
Bookmarks, digital signatures, attachments, forms, and annotations may not be preserved. Review important documents after processing.
Frequently asked questions
Will my original files change?
No. The tool creates new result files. Review the downloaded results before using them.
Are my files uploaded?
Selected files are processed in your browser. File contents and filenames are not sent to a server. Aggregate tool-use counts are collected as described in the privacy notice.