Help Center
Find all the information you need about our PDF Merger Tool here. From how-to guides to frequently asked questions, we provide comprehensive support.
How to Use: Merge PDFs in Three Easy Steps
1. Upload Files
Start by clicking the "Select PDF Files" button, or simply drag and drop multiple PDF files into the designated area.
2. Adjust Order
Uploaded files will appear in a list. You can click and hold a file to drag it up or down, arranging the order for the final merged document.
3. Merge & Download
Once the order is set, click the "Merge PDF" button. After processing, click "Download Merged PDF" to save your file.
Tool Highlights
Completely Secure
All your files are processed within your browser. Nothing is uploaded to any server. Your privacy is 100% protected.
No File Limits
This tool has no hard limits on the number or size of PDF files. Processing power depends solely on your computer's performance.
Drag & Drop Sorting
Easily drag and drop files to intuitively adjust the merge order. No complex settings, what you see is what you get.
Completely Free
Our PDF merger tool is completely free, with no hidden fees or feature limitations. You can use it anytime, anywhere.
Frequently Asked Questions (FAQ)
Is this tool secure? Will my files be leaked?
Absolutely secure. The key feature of this tool is that all operations are performed locally in your browser. File data is never uploaded to our servers. This means no one but you can access your files, ensuring your privacy is fully protected.
Why is merging large PDF files slow or causing the browser to freeze?
Because all processing happens on your local computer, the speed is directly affected by your computer's CPU and memory. If you are merging very large or numerous files, it may consume significant system resources, leading to longer processing times or a temporarily unresponsive browser. This is normal.
Can I merge encrypted or password-protected PDF files?
No. Due to security restrictions, this tool cannot process PDF files that are password-protected or have editing restrictions. The process will likely fail if you attempt to merge such files. Please ensure the PDFs you upload are accessible and not encrypted.
After a merge is complete, how do I start a new one?
After you successfully download the merged file, a "Merge Again" button will appear. Clicking it will reset the tool to its initial state, allowing you to start a new merge task immediately.