100% free🔒 No uploads⚡ Instant

Merge PDF

Combine multiple PDFs into one file. Merge multiple PDF files into a single PDF online for free.

Your file never leaves your device — everything is processed locally in your browser.

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How to use Merge PDF

Drop your files into the upload box above (or click to browse).
Adjust the options to your liking.
Click the process button — everything runs instantly in your browser.
Download your result. Your file was never uploaded anywhere.

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Part of 23 PDF Tools on fltools — all free, all on-device.