Are my files uploaded anywhere?

No. Plume merges your PDFs directly inside your browser. Your files never leave your device and nothing is sent to a server — you can even merge with your wifi switched off.

Yes — unlimited merges, no sign-up, no watermark, and no daily limit. Because the work runs on your device, it costs us almost nothing, so we don’t charge for it.

Do I need an account or to install anything?

No account and no install. Open the page and start merging straight away in any modern browser, on desktop or mobile.

Is there a file size or count limit?

There’s no hard limit. Because everything runs on your device, very large files depend on your device’s memory, but typical documents merge in seconds.

Can I reorder or remove files before merging?

Yes. Drag files into any order, sort them by name or size, and remove any you don’t want — then merge what’s left.

Does merging change the quality?

No. Pages are copied exactly as they are — same text, images and fonts. Nothing is re-compressed, so quality is identical to your originals.

Is it safe to merge confidential or sensitive PDFs?

Yes — that’s the whole point of Plume. Because your documents are never uploaded, nobody (including us) can see them. It’s well suited to contracts, IDs, medical and financial files.

Merge PDF

Merge PDF files into one.

To merge PDF files for free, drag your PDFs into the box below, arrange them in the order you want, and click Merge — your combined PDF downloads instantly. Everything runs inside your browser, so your files are never uploaded and never leave your device. No sign-up, no watermark, no file limits.

Drop your PDFs here

or click to browse your files

Choose files

Add your files

Drop in or browse as many PDFs as you like.

Drag to reorder

Set the exact order with a quick drag.

Merge & download

One click and your combined PDF saves locally.

Processed on your deviceNo uploads, everNo sign-up & free

How to merge PDF files

1
Add your PDFs
Drop your PDF files into the box above, or click to browse. Add as many as you like.
2
Put them in order
Drag the files to arrange them. They’ll be merged from top to bottom.
3
Merge & download
Hit Merge and your combined PDF downloads instantly — all done on your device.

Plume vs upload-based PDF mergers

Most “free” online PDF mergers send your documents to a server and promise to delete them later. Plume never uploads them in the first place.

Feature	Plume	Upload-based tools
Where files are processed	In your browser	Uploaded to a server
Do files leave your device?	Never	Yes (“deleted later”)
Sign-up	None	Often required
Watermark	None	On free tiers
File size / count limit	Only your device’s memory	Free-tier caps
Works offline	Yes (after load)	No
Price	Free	Freemium

Is it safe to merge PDFs online?

Yes — merging PDFs with Plume is safe because your files never leave your device. Unlike most online PDF mergers, which upload your documents to a server and delete them afterwards, Plume does all the work inside your browser tab. Nothing is transmitted, stored or seen by us. You can even disconnect from the internet and it still works — which makes it a good fit for contracts, IDs, and medical or financial documents you’d rather not send to a stranger’s server.

Frequently asked questions

Are my files uploaded anywhere?: No. Plume merges your PDFs directly inside your browser. Your files never leave your device and nothing is sent to a server — you can even merge with your wifi switched off.
Is it really free?: Yes — unlimited merges, no sign-up, no watermark, and no daily limit. Because the work runs on your device, it costs us almost nothing, so we don’t charge for it.
Do I need an account or to install anything?: No account and no install. Open the page and start merging straight away in any modern browser, on desktop or mobile.
Is there a file size or count limit?: There’s no hard limit. Because everything runs on your device, very large files depend on your device’s memory, but typical documents merge in seconds.
Can I reorder or remove files before merging?: Yes. Drag files into any order, sort them by name or size, and remove any you don’t want — then merge what’s left.
Does merging change the quality?: No. Pages are copied exactly as they are — same text, images and fonts. Nothing is re-compressed, so quality is identical to your originals.
Is it safe to merge confidential or sensitive PDFs?: Yes — that’s the whole point of Plume. Because your documents are never uploaded, nobody (including us) can see them. It’s well suited to contracts, IDs, medical and financial files.

More PDF tools

Every Plume tool runs the same way — privately, in your browser. See all PDF tools →