Free online PDF merger — no signup
Merge PDF Online Free
Combine PDF files into one — no watermark
Use this free online PDF merger to combine multiple PDF files into a single document. Merging happens in your browser, so your PDFs never leave your device.
Drop PDF files here or click to choose
Select two or more PDFs to combine into a single document. You can add more files after the first upload.
Merging happens in your browser. Your PDFs stay on this device.
Why use our PDF Merger?
- Merge multiple PDF files into one document
- 100% free forever — no signup or account
- No watermark or hidden limits on merges
- Drag to reorder PDFs before merging
- Browser-based PDF combiner — files stay on your device
- Works on Windows, Mac, Linux, iPhone, and Android
Combine files in seconds
Add PDFs, drag to reorder, and click merge. Get a clean combined PDF with the same fonts and layout.
Open PDF MergerMerge multiple PDF files into one document
Stop sending five attachments when you only need one. Merge contracts, reports, invoices, or lecture notes into a single PDF that's easier to share, upload, and archive. The order you choose in the list is the order your pages appear in the merged file.
Merge PDF online free — no signup, no watermark
Many PDF combiner tools add watermarks or force you to create an account. This merger is different: it's 100% free, doesn't add logos, and does not require email or registration. Just open the page, merge your PDFs, and download the combined file.
Popular ways to use the PDF merger
Combine scanned pages
Scan documents as separate PDFs and then merge them into one clean, ordered file for clients, HR, or school.
Bundle reports and invoices
Combine monthly invoices, statements, or project reports into a single PDF before you send or upload them.
Merge PDFs on phone or tablet
Use Safari or Chrome on iOS and Android to merge PDFs on the go, without installing extra apps.
How to merge your PDFs online (3 steps)
1) Upload your PDFs
Click Start Merging or drag & drop your files into the merger. Add as many PDFs as you need.
2) Reorder the files
Drag to arrange the file order before merging. For page-level edits, you can use Split PDF or Edit PDF first.
3) Merge & download
Click Merge & Download to create a single PDF. Your combined file downloads instantly — no watermark, no signup required.
Security & privacy
TechRex is privacy-first. Merging happens entirely in your browser using client-side processing. Your PDFs are not uploaded to a remote server by default.
- No signup, no watermark, no hidden limits
- Files stay on your device while merging
- TLS is used for any optional network requests
- Clear your browser storage if you want to remove local traces
Frequently asked questions
How do I merge PDF files online for free?
Open this Merge PDF tool, upload your files, drag to reorder, and click Merge & Download. Your combined PDF downloads instantly with no watermark.
Is my file uploaded to a server?
No. The merger processes PDFs in your browser using client-side code, so your documents stay on your device unless you choose to share them.
Can I merge large PDFs and many files?
Yes. You can add many multi-page PDFs. The practical limit depends on your device memory and browser, not an artificial cap.
Does it work on iPhone and Android?
Yes. The tool is mobile-friendly and works in Safari or Chrome on iOS and Android with no app installation.
Can I remove or rotate pages before merging?
Yes. For page-level tweaks such as removing or rotating pages, open the Edit PDF or Split PDF tools first, then merge the cleaned-up files.