Merge PDF Files
Merge PDF files locally in the selected order. Reorder inputs before creating a downloadable combined PDF.
Drop files here. Files stay on your device.
How to use
Select up to 20 PDFs. Use the arrow controls to reorder files; pages within each source stay in their original order. Run the tool to generate a new PDF and check its page count before downloading.
All PDF processing runs in a local browser Worker. Cancel or clear terminates the Worker and discards the unfinished result. Nothing is uploaded and source files are not modified.
Behavior and limits
Limit: 100 MiB total and 2,000 output pages. Encrypted or damaged PDFs are rejected. Digital signatures, bookmarks and interactive form behavior are not preserved reliably when pages are copied. Keep originals and verify important output.
Questions & answers
Will digital signatures remain valid?
Do not rely on them after merging. A new PDF is created and signed originals should be retained separately.
Can I use this without uploading data?
Processing runs on your device. Input is not sent to a conversion API. Keep the page open until the result is ready.