Merge PDF
Combine multiple PDFs into one
Your files are processed locally in your browser and never uploaded to our servers.
How to use Merge PDF
- 1
Add your file
Drag & drop, tap to browse, or paste from your clipboard.
- 2
Choose your options
Adjust the settings for exactly what you need.
- 3
Download the result
Ready instantly — no watermark, no waiting in a queue.
Supported formats
Frequently asked questions
Is Merge PDF free?
Yes — completely free, with no signup and no watermarks. PL Tools is supported by a small number of non-intrusive ads.
Are my files uploaded anywhere?
No. Merge PDF runs entirely in your browser, so your files never leave your device and are never sent to our servers.
Is there a file size limit?
Nothing is uploaded, so there's no upload limit — but very large files depend on your device's memory. Files up to about 100 MB work well on most computers; phones may struggle with much larger ones.
Can I change the order of the PDFs?
Yes. Use the arrows next to each file to move it up or down before merging — the final PDF follows that order.
Is there a limit on how many PDFs I can merge?
No fixed limit. Because merging happens on your device, the practical limit is your device's memory — dozens of normal PDFs merge in seconds.
Which formats are supported?
Input: PDF. Output: PDF.
Does it work on my phone?
Yes. PL Tools works in any modern browser on iPhone, Android, tablets and desktop — there's nothing to install.