Free Online PDF Tool
Merge PDF Files Online
Combine two or more PDF files into a single document. Drag your files into any order you like, and LONX DOC merges them instantly — right inside your browser.
Open Merge PDF →No signup required · Free up to 20MB per file
How to Use Merge PDF
- Upload the PDF files you want to combine (drag & drop or browse).
- Drag to reorder the files — original, alphabetical, or reverse order.
- Click Merge and download your combined PDF.
Frequently Asked Questions
Is there a limit on how many files I can merge?
You can merge as many PDFs as you like, as long as the combined size stays within your plan's limits (20MB free, unlimited on Pro).
Is my file uploaded to a server?
No. This tool runs entirely in your browser — your file is never uploaded anywhere, so nothing ever leaves your device.