All tools / Merge PDF
Merge PDF files into one
Add your PDFs, put them in the order you want, and download a single document. Everything happens on your device.
How to merge PDF
- Add two or more PDF files.
- Drag them, or use the arrows, to set the order.
- Select Merge PDFs and download the result.
Your file never leaves this tab.
Merge PDF runs as code inside your browser. The document is read from your device, changed in memory, and handed back to you as a download. There is no upload step and no copy on our servers.
That also means it keeps working on a plane or a slow connection once the page has loaded.
Check it yourself
- Open your browser developer tools and go to the Network tab.
- Use the tool on a file.
- You will see no request carrying your file anywhere.
Questions about Merge PDF
Is there a limit on how many PDFs I can merge?
There is no fixed limit. The practical limit is your device memory, so very large batches (hundreds of megabytes) may be slow on a phone.
Do my files get uploaded?
No. The merge is done by code running inside your browser tab. Close the tab and nothing is left behind.
Can I merge password-protected PDFs?
Not directly. Use Unlock PDF first, enter the password, then merge the unlocked copies.
Will bookmarks and links survive?
Page content and internal page links are kept. Document-level bookmarks from the source files are not carried into the merged file.
About merge pdf Tool
The merge pdf tool at Kyvorix is built to run 100% in your browser. Your file is read locally, processed in memory and returned as a download. No upload, no storage on our servers, works offline.
Free to use, no sign-up, no watermark. Perfect for students, offices and anyone who needs quick PDF jobs without risking privacy.
Benefits
- Private: file never leaves your device
- Fast: no queue, instant processing
- Free: no limits, no account needed
Frequently Asked Questions
Is this tool free?
Yes, 100% free, supported by ads.
Do you upload my file?
No, everything runs in your browser offline.
Works on phone?
Yes, Chrome, Safari, Firefox on mobile and desktop.
About Merge PDF - Free Private Tool
Kyvorix Merge PDF runs 100% in your browser. Files are read locally, merged in memory and returned as download. No upload, no server storage, works offline.
Free, no signup, no watermark.