Free PDF tools that keep your files on your device
Merge, split, compress, convert and sign PDFs right in your browser. No uploads, no sign-up and no limits.
Processed on your device – files are never uploaded
All PDF tools
Organize PDF
- Merge PDF Combine several PDFs into one file, in the order you want.
- Split PDF Split a PDF into several files: every N pages or by custom ranges.
- Rotate PDF Turn PDF pages left or right – one page or all of them.
- Remove PDF pages Delete pages you don't need from a PDF.
- Extract PDF pages Pick the pages you need and save them as a new PDF.
- Organize PDF Reorder, rotate and remove pages with drag and drop.
Optimize PDF
Convert to PDF
Convert from PDF
Edit PDF
- Add page numbers Number the pages of a PDF in the position and style you choose.
- Watermark PDF Stamp text or a logo over your PDF pages, with any opacity and angle.
- Crop PDF Trim margins or cut PDF pages down to the area you need.
- Sign PDF Draw, type or upload your signature and place it on any page.
Why use PDF4U
Private by design
Your files are processed by your own browser and are never sent to a server. Our pages are even blocked from connecting to other websites.
No limits
Use any tool as often as you like, with as many files as your device can handle. There are no daily caps and no watermarks.
No sign-up
Open a tool and start working. You don’t need an account, an email address or an app – a phone or computer with a modern browser is enough.
How to use PDF4U in 3 steps
Choose a tool
Pick what you need from the list above – for example Merge PDF, Compress PDF or Sign PDF. Each tool opens on its own page.
Add your file
Drag your file onto the page or tap to select it. Your browser reads it directly from your device, so nothing is uploaded and there is no waiting for a transfer.
Download the result
Adjust the options if you like, press the button and save the finished file. It is created on your device, and nothing is kept after you close the page.
Because the work happens in your browser, even contracts, ID copies and forms stay private.
Questions about PDF4U
Are my files uploaded to a server?
No. Every tool runs in your own browser, so your file is read and changed on your device and is never sent to us or to anyone else. Our pages are even blocked from connecting to other websites while you work. You can read the details in our privacy policy.
Is PDF4U really free? Do I need an account?
The tools are free, with no sign-up, no email address and no watermark on your files. We plan to show ads in the future to cover our costs; if that happens, we will update our privacy policy first.
Is there a limit on file size or on how many files I can process?
We don’t set a size limit and we don’t count how often you use the tools. The real limit is your device: a phone or an older computer may struggle with very large files (for example, more than about 50 MB on a phone), and the page shows a note when a file is big. If a job runs out of memory, try fewer pages at a time or use a computer.
Does it work on phones and tablets? Can I use it offline?
Yes, it works on phones, tablets and computers with a current browser. You need an internet connection to open the page; after it has loaded, the processing happens on your device. Some extras, such as the fonts for watermarks and page numbers, load only when you choose them. We don’t offer an installable offline app yet.
Which tools and languages are available?
The tools: Merge PDF, Split PDF, Compress PDF, Rotate PDF, Organize PDF, Remove PDF pages, Extract PDF pages, Add page numbers, Watermark PDF, Crop PDF, Sign PDF, Protect PDF, Unlock PDF, Repair PDF, JPG to PDF, PDF to JPG, PDF to PNG. PDF4U is available in 16 languages – use the language menu at the top of the page.
Which browsers does PDF4U support?
Any current version of Chrome, Edge, Firefox or Safari on a computer, phone or tablet. The tools need JavaScript and WebAssembly, which all current browsers have; very old browsers may not work.
How do I report a problem or contact you?
Write to [email protected] and tell us which tool you used, which browser and what happened. Please don’t send private documents. You can also find us on the contact page.