PDF Merge
Combine multiple PDF files into one document instantly in your browser. Free, private, no upload required.
How do I merge PDF files online?
Upload your PDF files, arrange them in the desired order by dragging or using arrow buttons, then click the Merge button. The combined PDF will be downloaded automatically to your device.
Is this PDF merger free to use?
Yes, this PDF merge tool is completely free with no limitations. You can combine as many PDF files as you need without any cost or registration.
Are my PDF files safe and private?
Absolutely. All PDF merging happens locally in your browser using JavaScript. Your files are never uploaded to any server, ensuring 100% privacy and data security.
Can I reorder pages when merging PDFs?
Yes, you can rearrange the order of PDF files before merging by dragging them or using the up and down arrow buttons next to each file entry.
Is there a file size limit for merging PDFs?
There is no strict file size limit. However, very large files or many files may take longer to process depending on your device's available memory.
How many PDF files can I merge at once?
You can merge as many PDF files as you need. There is no limit on the number of files you can combine in a single merge operation.
Does the PDF merger work on mobile devices?
Yes, the tool works on all modern browsers including mobile devices. The interface is responsive and adapts to different screen sizes.
Do I need to install any software?
No installation required. This is a browser-based tool that runs entirely in your web browser. Just open the page and start merging PDFs.
Can I merge password-protected PDF files?
If you know the password, you can merge password-protected PDFs. However, the merged output will not be password-protected unless you add protection afterward.
What technology powers this PDF merger?
This tool uses pdf-lib, a pure JavaScript PDF library, to merge files directly in your browser. No server-side processing is involved.
Can I merge scanned PDF documents?
Yes, you can merge any PDF files including scanned documents. The tool preserves all content including images, text, and formatting from the original files.
Will the merged PDF maintain the original quality?
Yes, the merged PDF maintains the exact same quality as the original files. No compression or quality loss occurs during the merge process.
How to Use PDF Merge
Combine several PDFs into one document right in your browser — no upload, no waiting on a server. The files stay on your device from start to finish.
- Add your documents to the “Click or drag PDF files here” area — several PDFs can be loaded at once.
- Order them with the up and down arrows next to each file; the list order becomes the page order of the merged PDF.
- Drop any file you don't need with its remove control, or reset the whole queue with Clear.
- Press Merge PDFs to build one combined document locally in your browser.
- Save it with Download and page through to confirm every file is there, in the order you set.
Files are merged whole — if you only need some pages of a PDF, extract or split them first and add the trimmed file here.
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