Merge PDF
Drop your PDFs, put them in order, merge. Files never leave your device.
Drop PDF files here
- Files never leave your device
- Unlimited · No signup
Drag or use the arrows to reorder
Ready
DownloadMerge PDFs in 3 steps
- Choose your PDF files or drop them here.
- Drag the files into the order you want.
- Press "Merge PDFs" and download the result.
Why ConvertKoala?
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Files never leave your device
Merging runs entirely in your browser. Nothing is uploaded, so nothing can leak.
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Unlimited
No file count, size or daily caps. Merge as many PDFs as you like, as often as you like.
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No signup
No account, no email, no credit card. Open the page, pick your files, merge.
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Works everywhere
Phone, tablet or desktop; any modern browser will do. Nothing to install.
Frequently asked questions
How do I merge PDFs on iPhone or Android?
Open this page in your phone’s browser, tap "Choose files" and pick your PDFs. Use the arrows to set the order, then tap "Merge PDFs". The merged file saves to your phone like any other download.
Is it really free and unlimited?
Yes. There is no file limit, no daily quota and no paid tier. We can keep it free because the work happens on your device, not on our servers, so each merge costs us nothing.
Are my files uploaded anywhere?
No. The merge runs inside your browser. Your PDFs never leave your device and never reach our servers, so there is nothing for us to store or see.
Can I change the page order?
Yes. The files are merged in the order shown in the list. Drag them, or use the up and down arrows, to rearrange them before you merge.
Can I merge password-protected PDFs?
Not yet. A protected PDF has to be unlocked first: open it with its password, save an unprotected copy, then add that copy here. We show a clear warning if a file is encrypted.
Will merging reduce the quality?
No. Pages are copied exactly as they are, so text, images and page sizes stay untouched. We don’t compress anything, so there is no quality loss.