Merge PDFs
Combine multiple PDFs into a single document. Reorder by dragging.
shieldFiles stay on your device — processing runs in your browser.
- check_circleReorder files by dragging
- check_circleCombines unlimited PDFs in your browser
- check_circleBookmarks and page metadata preserved
Merge PDF files into one document
Combine two or more PDFs into a single file. Drag the files into the order you want, and LumosPDF stitches them together while preserving bookmarks and page metadata. The whole merge runs in your browser, so none of your files are uploaded — making it safe for confidential documents.
How to merge PDF files
- 1Drop two or more PDFs into the upload area above.
- 2Drag the files to arrange them in the order you want them combined.
- 3Add more PDFs at any time, or remove ones you don't need.
- 4Click Merge and the combined PDF downloads to your device.
Frequently asked questions
How many PDFs can I merge at once?
There's no fixed limit — combine as many PDFs as your device can handle. Everything runs locally, so the only real constraint is your computer's memory.
Can I choose the order of the files?
Yes. Drag the files in the list to set the exact order before merging.
Are bookmarks and metadata kept?
Yes. LumosPDF preserves bookmarks and page metadata from the source files where possible.
Do my files get uploaded to merge them?
No. The merge happens entirely in your browser, so your documents stay private.
Is merging PDFs free?
Yes, merging is free with no account, no watermark, and no page limits.