About merging PDFs
Whether you're combining scanned pages into one application, stitching invoices into a monthly file, or assembling chapters into a single report, merging is the most-used PDF operation there is. This tool joins any number of PDFs in the exact order you set — and unlike most "free" merge sites, it never uploads your documents. The merge happens inside your browser using the same PDF processing engine trusted by thousands of applications.
How to merge PDF files
- Click the drop area (or drag files onto it) and pick two or more PDFs.
- Reorder the list with the ▲ ▼ arrows — the top file becomes the first pages.
- Press Merge PDFs and your combined file downloads as
merged.pdf.
Good to know
- There's no page or file-size quota — limits depend only on your device's memory, and even 100+ MB merges work on a typical laptop.
- Password-protected files can't be read mid-merge; remove the password with the Unlock PDF tool first.
- Page sizes are preserved exactly — mixing A4 and Letter pages is fine.
- Need to drop some pages afterwards? Use Remove PDF Pages.
Frequently asked questions
Is there a limit on files or file size?
No fixed limit. Merging runs on your own device, so capacity depends on your device's memory — typical laptops handle hundreds of pages and files over 100 MB without trouble.
Are my PDFs uploaded to a server?
Never. Files are read and merged inside your browser; they never leave your computer, which also makes merging faster than upload-based sites.
Why was one of my files skipped?
It's almost always password protection. Remove the password first with the Unlock PDF tool, then merge.
Will merging reduce quality?
No — pages are copied exactly as they are, with no recompression, so the merged file matches the originals pixel for pixel.