Merge PDF Files Into One
Add your PDFs, put them in the right order, and get a single document with one click. Free, unlimited, and your files never leave your device.
- Free
- No file limit
- Customizable order
- 100% private
100% private — Everything is processed directly in your browser: your files, voice, and image are never sent to Chatzam's servers.
How to merge PDFs?
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Add your PDFs
Drag and drop all the files to combine, or select them from your device.
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Choose the order
Use the arrows to place each document where you want it in the final file.
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Merge
Click “Merge PDFs”: the combined file downloads right away.
Why merge your PDFs here?
Unlimited and free
No daily quota or maximum size: only your device's memory matters.
Original quality
Pages are copied as-is: text, images, and links stay identical, with no recompression.
Fast
Merging happens on your device in seconds, even for dozens of files.
Confidential
Your documents aren't uploaded: perfect for supporting documents, statements, or contracts.
Combine several PDFs into a single document
Rental application, job application, expense reports, or supporting documents: many processes require a single PDF combining several files. Add your files, put them in order, and the merged PDF is ready. Every page keeps its original quality.
Merge PDFs without sending them over the internet
Unlike most merging websites, Chatzam combines your PDFs directly in your browser with the pdf-lib library. Your documents never pass through any server: it's faster and much safer for your personal or professional paperwork.
Need to go further?
To keep only certain pages, use the “Split PDF” tool. To turn photos into a PDF before combining them, use “JPG to PDF”, then merge everything here.
Frequently Asked Questions
How many PDFs can I merge?
As many as you want. The only limit is your device's memory; on a recent computer, several hundred pages are no problem.
Is the page quality preserved?
Yes. Pages are copied without conversion: text stays selectable and images keep their resolution.
Can I merge PDFs on my phone?
Yes, the tool works in your smartphone's or tablet's browser.
Why is one of my files rejected?
Password-protected PDFs can't be merged. Save an unprotected copy first.