Merge PDF
Combine multiple PDFs into one.
Merge PDF at a glance
Merge PDF is a free online pdf tool you can use right now to combine multiple PDFs into one — no account, no install and no usage limit. It runs entirely inside your browser, so whatever you enter stays on your own device.
- Price
- Free — no trial, no paid tier, no watermark
- Sign-up
- Not required
- Where it runs
- In your browser — nothing is uploaded to a server
- Works on
- Chrome, Safari, Firefox and Edge — desktop, tablet and phone
- Category
- PDF & File Tools
100% private — your files never leave your browser.
About Merge PDF
Merge PDF combines several PDF files into one document, in the order you choose. Drag your files in, reorder them until the sequence is right, and download a single merged PDF — page sizes, orientation and embedded fonts are all preserved exactly as they were.
The merge happens inside your browser using the PDF's own page objects, which means two things worth knowing: nothing is uploaded to a server, and the pages are copied rather than re-rendered, so there is no quality loss and no re-compression. A scanned page merged today looks identical to the original.
It's the tool you want when a form arrives as five separate attachments, when you're assembling a portfolio from individual exports, or when a submission portal accepts exactly one file and you have six.
How to use Merge PDF
- Drop in two or more PDF files, or click to browse for them.
- Drag the thumbnails to set the page order — the merged file follows this sequence.
- Click Merge and download the combined PDF.
Frequently asked questions
Is there a file size or page limit?
There's no hard limit, but very large files are held in your device's memory while merging. On a phone, keep the combined total under roughly 100 MB; on a desktop you can go considerably higher.
Will merging reduce the quality of my PDFs?
No. Pages are copied across as-is rather than re-encoded, so text stays selectable, images keep their original resolution and fonts stay embedded.
Are my documents uploaded anywhere?
No — the merge runs entirely in your browser. Your files never leave your device, which matters when the PDFs are contracts, medical records or ID documents.
Can I merge password-protected PDFs?
Not directly. Remove the password in your PDF reader first, then merge — encrypted files can't be read without the password.