Merge PDF Files Online
Combine multiple PDF files into one document, in any order you choose.
Processing…
Works with files up to roughly 100 MB, depending on your device's memory.
Combining PDFs shouldn't require desktop software or a subscription. Our Merge PDF tool joins any number of PDF files into a single document directly in your browser tab — nothing is uploaded to a server, so your files never leave your device. This makes it a safe way to combine contracts, reports, scanned pages, invoices or chapters of a book into one clean file. Upload your PDFs, drag the file cards into the order you want, remove any you don't need, then click Merge. The tool stitches every page from every file together while preserving the original quality, text and formatting — nothing is rasterized or recompressed. Once merging finishes, download the combined PDF with one click. Because everything runs locally using your browser's own processing power, merging even large files is fast and works the same on a laptop, phone or tablet.
How it works
Upload your file
Drag and drop, or click to choose a file from your device.
Choose your options
Set the options for this tool — most tools work great with the defaults.
Download your PDF
Get your result instantly, processed right in your browser.
Frequently asked questions
Is merging PDF files really free?
Yes. Merge PDF is completely free with no limit on how many times you use it, no signup and no watermark added to your file.
How many PDF files can I merge at once?
You can merge as many PDF files as your device's memory allows — most users comfortably merge dozens of files at once.
Can I choose the order of the merged pages?
Yes. After uploading, drag and drop the file cards into the order you want before clicking Merge PDF.
Will merging reduce the quality of my PDF?
No. Pages are copied directly from the source files, so text stays selectable and images keep their original resolution.
Are my files uploaded to a server?
No. Merging happens entirely inside your browser using JavaScript — your files are never sent anywhere.
Can I remove a file after adding it?
Yes, click the remove icon next to any file in the list before merging.