Merge PDF
Combine multiple PDFs in any order — drag to reorder, view first-page thumbnails, see page counts, and merge entirely in your browser. No upload.
Drop PDF files here, or
You can add more files at any time. Drag tiles to reorder before merging.
About Merge PDF
Merge PDF files online free. Combine multiple PDFs into one. No sign-up. Merge PDF in browser. Fast and secure.
Our free Merge PDF on AllOnlineTools.org helps you get results in seconds without installing software or creating an account. It is designed for everyday users, professionals and students who need a reliable pdf utility online.
Everything runs in your web browser when possible, so your content stays on your device. We do not store your files or text on our servers for these client-side tools. Open the tool, complete your task, and download or copy the result — that is it.
How to use Merge PDF
- Click browse or drag PDF files into the drop zone.
- Drag file tiles to reorder them before merging.
- Review the total page count shown above the list.
- Click Merge & Download to combine PDFs into one file.
- Save the merged PDF to your device.
Why use our Merge PDF?
- Merge, split, compress and convert PDFs online
- Client-side processing — PDFs stay on your device
- No file size limits from our servers (browser memory applies)
- Free with no watermark
- Works on Chrome, Edge, Firefox and Safari
Frequently asked questions
Is Merge PDF free to use?
Yes. Merge PDF on AllOnlineTools.org is 100% free with no sign-up, no install and no hidden fees.
Do I need to create an account?
No account is needed. Use Merge PDF instantly in your browser.
Is my data safe?
Merge PDF runs in your browser whenever possible. Your files and text are not uploaded to our servers for these client-side features.
Does it work on mobile?
Yes. Merge PDF is responsive and works on Android, iPhone, tablet and desktop browsers.
Are my PDF files uploaded to your server?
No. PDF merge, split, compress and similar tools run locally in your browser using JavaScript. Your documents stay on your device.
Is there a limit on how many PDFs I can merge?
There is no server-side limit. Very large files or many files may be limited only by your device memory and browser.