PDF Merger
Combine multiple PDF files into one. Drag to reorder, then merge instantly.
Drop PDFs here or click to browse
Select 2 or more PDF files to merge
How to Use the PDF Merger
Using the PDF merger is simple. Drag and drop multiple PDF files into the upload area, or click to browse your device. Once uploaded, you'll see a list of all PDFs with their page counts and file sizes. You can drag PDFs to reorder them before merging. Click "Merge PDFs" to combine them into a single document, which will download automatically.
Why Merge PDFs?
Merging multiple PDFs into one makes it easier to share, print, or archive documents. Instead of managing separate files, you get a single organized PDF that contains all your content in the order you choose.
Privacy & Security
All PDF merging happens directly in your browser using JavaScript. Your files are never uploaded to any server. Everything is processed locally on your device, ensuring your documents remain completely private and secure.
Frequently Asked Questions
How many PDFs can I merge at once?
You can merge as many PDFs as you want. The only limit is the total file size your browser can handle, which is typically several hundred megabytes depending on your device.
Can I reorder the PDFs?
Yes! You can drag and drop PDFs in the list to reorder them before merging. The merged PDF will contain pages in the order you arrange them.
What file formats does this tool support?
This tool works with PDF files only. If you need to merge other document types (Word, images, etc.), you can convert them to PDF first using online tools, then merge them here.
Is there a file size limit?
There's no strict limit, but merging very large PDFs (over 500MB combined) may be slow or cause performance issues. For best results, keep total file size under 200MB.
What happens to my files after merging?
After merging, the resulting PDF is downloaded directly to your device. The original files are not stored anywhere, and once you close the tool, the uploaded files are cleared from memory.
Can I undo a merge?
No, but you can always re-upload your original PDFs and merge them again with different orders. Keep your original files as backups.
Love using BreezyTools?
Go Pro for an ad-free experience, priority features, and support independent development — for less than a coffee a month.