Contracts with attachments, scattered scans, chapters saved as separate files — you often need several PDFs delivered as a single document. With this Merge PDF tool you can combine multiple PDFs into one right in your browser, with no software to install and no account to create.
It's simple. Add every file you want to combine, drag them into the order you need, and click once. You can add up to 20 files of up to 100MB each, so even large documents come together in a single pass. The order shown in the list — top to bottom — becomes the page order of the final PDF.
The key difference is how it works. Typical online PDF sites upload your files to their servers and send back the result, but here every operation runs entirely inside your browser. Sensitive documents like contracts, ID scans, and medical records never leave your device, so you can use it with confidence.
How to Use
- 1
Select PDF files
Drag in the PDFs you want to combine, or add them with the 'Choose files' button. Up to 20 files, 100MB each.
- 2
Check & adjust order
Reorder files by dragging them in the list. They are placed into the final PDF from top to bottom.
- 3
Run merge
Click 'Merge PDF' and your browser starts combining instantly. It finishes within seconds depending on file size.
- 4
Download
Download the merged PDF right away. All data used in the process is cleared when you close the browser.
When It's Useful
At work — submit reports in one file
When the body, attachments, and a quote arrive as separate PDFs, combine them into one clean file to send in a single email.
Students — consolidate materials
Merge lecture notes split by chapter or scattered references into one file that's easy to print and keep.
Freelancers — bundle contract documents
Combine a contract, ID copy, and bank statement into one PDF to hand off to a client without the back-and-forth.
Tidy up scans
Restore PDF fragments saved page-by-page by a scanner app back into one document in the right order.
Tips
- Prefix file names with 01, 02, and so on to make the order easy to verify right after adding them.
- PDFs saved page-by-page by a scanner app can be bundled together here in one go.
- If you spot unwanted pages in the result, clean them up with the 'Delete Pages' tool.
- When merging several large files, close other tabs to free up browser memory for a faster run.
- Need to combine more than 20 files? Merge them in groups first, then merge those results together.
- Check whether page orientations (portrait/landscape) are mixed before merging to avoid surprises when printing.
FAQ
Are my merged files stored on a server?
No. Merging runs 100% inside your browser; files are never uploaded or stored. When you close the page, the data is gone.
How many files can I merge?
Up to 20 files of 100MB each per pass. If you need more, merge some first and then add the rest to that result.
Can I change the merge order?
Yes. Drag items in the file list to reorder them; they merge from top to bottom.
What's the minimum number of files?
Merging runs from 2 files up. With a single file the button stays disabled.
Can I merge password-protected PDFs?
PDFs with an open password can't be read in the browser, so they won't merge. Remove the password first, then try again.
Does quality drop after merging?
No. Pages are copied over without re-compression, so the original quality and text stay intact.
Can I remove a file I added by mistake?
Yes. Before merging, remove items individually with the X button, or clear the whole list with 'Clear all'.
Does it work on mobile?
Yes. It runs the same in mobile browsers (Safari, Chrome) with no app to install. Large files are faster on a PC, though.