Merge PDF files
Combine several PDFs into a single document — privately, in your browser.
Drag & drop your file here
or click to choose — your file is processed locally and never uploaded
How to merge PDFs
- 1
Add your files
Drop in two or more PDFs. Nothing is uploaded — they're read straight from your device.
- 2
Put them in order
Drag the files to arrange them, or remove any you don't need.
- 3
Merge & download
Click Merge and your combined PDF is built locally, ready to download.
Combine PDFs without uploading them
Merging PDFs usually means handing your documents to a website that uploads them to a server. When those documents are contracts, medical records or financial statements, that's a real privacy risk. pdfnoupload merges your files entirely inside your browser using pdf-lib, so the pages are assembled on your own machine and the result is downloaded directly to you. No copy of your data is ever sent across the internet.
Fast, free and offline-capable
Because there's no upload and no server round-trip, merging is instant even for large files — the only limit is your own device's memory. After your first visit the app is cached, so you can merge PDFs with no internet connection at all. It's completely free, with no watermarks and no sign-up.
Frequently asked questions
Are my files uploaded anywhere?+
No. Merging happens entirely in your browser. You can confirm this by opening DevTools → Network and watching for zero upload requests while you merge.
Is there a limit on how many PDFs I can merge?+
There's no fixed limit. Since everything runs locally, the practical limit is your device's available memory.
Can I reorder the pages or files?+
Yes — arrange the files in the order you want before merging, and the pages are combined in that sequence.