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
Is this tool secure? Will my files be leaked?
Yes. 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 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. Merging very large or numerous files consumes significant system resources, which can lead to longer processing times. 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. The process will likely fail if you attempt to merge such files. Please ensure your PDFs are not encrypted before uploading.
How do I start a new merge after one is complete?
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.
Do I need to install any software to use this tool?
No installation is required. Our PDF merger is a fully browser-based tool. All you need is a modern web browser like Chrome, Firefox, or Safari to use it on any operating system.
Will the quality of my PDFs be affected after merging?
No, the quality of your PDFs remains unchanged. Our tool merges the files without re-compressing or altering the content of the pages, ensuring the original visual fidelity is preserved.
What browsers are supported?
Our tool is designed to work on all modern web browsers, including Google Chrome, Mozilla Firefox, Apple Safari, and Microsoft Edge. For the best performance, we recommend using the latest version of your browser.
Is there a limit on the total size of files I can merge?
There are no artificial limits imposed by the tool itself. However, performance depends on your computer's available memory and processing power. Merging extremely large files might be slow or could potentially crash the browser tab if your system runs out of resources.
What happens if my browser crashes during the merge?
Since all processing is done locally, if your browser crashes, the merge process will be interrupted and no merged file will be created. You will need to refresh the page and start the process again. Your original files will not be affected.
How is the final merged file named?
The merged file is automatically given a unique name to prevent overwriting existing files in your downloads folder. The default name is typically in the format of `merged-` followed by a timestamp, for example, `merged-1677654321.pdf`.