Merge PDF files into one document, free and in your browser
Combining PDFs usually means uploading confidential documents to a stranger's server and hoping their retention policy is real. This merge tool never does that: your files are read straight into the tab, joined there, and handed back as a download. Add as many PDFs as you like, drag them into the order you want, and save a single file — no account, no watermark and no page cap.
How to merge PDF files into one
Add your PDFs
Drag every PDF you want to combine onto the dropzone, or click to pick them from your file browser. You can keep adding files after the first batch.
Put them in order
Drag the file cards to reorder them. The merged document follows the order shown, top to bottom, and each card tells you how many pages it contributes.
Merge and download
Press Merge. The combined PDF is built in your browser and saved to your downloads folder in a second or two — nothing is uploaded at any point.
What Merge PDF can do
Unlimited files and pages
There's no cap on how many PDFs you combine or how long the result is.
Order you control
Reorder by dragging before you commit, and see each file's page count first.
Bookmarks and text survive
Pages are copied, not rasterised, so the text stays selectable and searchable.
Nothing uploaded
Merging happens in the tab. Confidential contracts stay on your machine.
Merge PDF — frequently asked questions
How do I merge PDF files without uploading them?
Open this page and drop your files on it. The merge runs as WebAssembly inside your browser tab, so the PDFs are never sent anywhere — you can even disconnect from the network after the page loads and it still works.
How many PDFs can I merge at once?
As many as your device's memory allows. There is no imposed limit on file count, page count or file size; a few hundred megabytes of PDF is comfortable on a typical laptop.
Will merging reduce the quality of my PDF?
No. Pages are copied across intact rather than re-rendered, so text stays selectable, images keep their original resolution and vector graphics stay sharp.
Can I merge a password-protected PDF?
Remove the password first with the Unlock PDF tool — that also runs on your device — then merge the unlocked copy.
Do my PDFs get uploaded to a server?
No. Every tool on Notoo Tools runs as JavaScript and WebAssembly inside your browser tab. There is no server that receives your files — you can disconnect from the network after the page loads and the tool keeps working.
Do I need an account or a subscription?
Neither. There's no sign-up, no email, no free-tier limit and no watermark. Bookmark the tool and it opens straight into the work.