Merge PDFs
Combine multiple PDFs into one instantly, in your browser.
Drag & drop files here, or click to select
How to Merge PDF Files Online
Select two or more PDF files from your device folders.
Drag the document cards to arrange their compilation order.
Choose standard combination settings or define page ranges.
Click the combine button to generate and save your single PDF.
Why Combine PDFs with SonuPDF?
Drag-and-Drop Order
Easily sort the document sequence with our simple graphical sorting interface.
Custom Page Ranges
Specify exact page selections from each file to merge only the sections you need.
In-Browser Consolidation
All document assembly operations run on your local CPU. No content is uploaded online.
Form and Link Retention
Keeps interactive form fields, page outlines, bookmarks, and internal links intact.
Frequently Asked Questions
There is no strict quantity limit, though extremely large files depend on your browser's memory capacities.
No. The merging is performed entirely inside your browser sandbox to keep data secure.
You must remove the password protection from the files prior to using the merging option.
No. Pages are merged by linking structure objects without re-compressing images, keeping resolution high.