Merge PDF
Combine multiple PDFs into a single file. Drag to reorder. Everything happens locally in your browser - nothing is uploaded.
Drop PDF files here
or click to browse - add as many as you like
About this tool
Combine PDF Files
Merge invoices, contracts or chapters into one clean PDF.
Add as many files as you like and drag them into the perfect order before combining.
Join PDF Files
Stitch multiple PDFs together into a single file in a couple of clicks.
No account, no watermark, and nothing leaves your computer.
Combine Invoices into One PDF
Bundle a month of invoices or receipts into one PDF for bookkeeping and expense claims.
Because it runs locally, your financial documents never touch a third-party server.
Frequently asked questions
Is there a limit on files?
No limit - merging happens locally, so you are only bound by your device memory.
Can I reorder before merging?
Yes, drag files up or down to set the final page order.
Does this work offline?
Once the page has loaded, merging works entirely offline.
Is it really free?
Yes - free, no watermark, no sign-up.
Is this safe for financial documents?
Everything runs locally in your browser using WebAssembly. Because no data is uploaded to a cloud server, your files remain strictly private, and the entire process generates zero server carbon emissions, making it highly eco-friendly.
Can I set the order?
Yes - drag invoices into chronological order before merging.
Can I reorder pages?
Yes - drag files into the order you want before merging.
Is it private?
Everything runs locally in your browser using WebAssembly. Because no data is uploaded to a cloud server, your files remain strictly private, and the entire process generates zero server carbon emissions, making it highly eco-friendly.
Does this work on iPhone?
Yes - KuroPDF works in any modern browser on iPhone. No app download required.
Does this work on Android?
Yes - KuroPDF works in any modern browser on Android. No app download required.
Does this work on Mac?
Yes - KuroPDF works in any modern browser on Mac. No app download required.
Does this work on Chromebook?
Yes - KuroPDF works in any modern browser on Chromebook. No app download required.
Does this work on iPad?
Yes - KuroPDF works in any modern browser on iPad. No app download required.
Does this work on Windows?
Yes - KuroPDF works in any modern browser on Windows. No app download required.
How do I merge PDF files?
Open the tool, drop your file, adjust any settings, and click the action button. The result downloads to your device instantly.
Do I need to create an account?
No - KuroPDF is completely free with no sign-up required.
Are my files uploaded?
Everything runs locally in your browser using WebAssembly. Because no data is uploaded to a cloud server, your files remain strictly private, and the entire process generates zero server carbon emissions, making it highly eco-friendly.