No-Upload PDF Merger — Processed in Your Browser
Merge PDFs privately. Document contents are not uploaded to a server for merging — processing happens locally in your browser. No tracking cookies. Free plan supports up to 150 pages and 200MB.
How it works (client-side)
Everything runs on your device for total privacy.
1) Open Secure-Merge
Load the app in your browser. No account or signup needed.
2) Add PDFs
Drag and drop your PDF files or use the file picker.
3) Reorder
Arrange files or pages as needed. Preview stays local.
4) Merge & Download
Click Merge. Your combined PDF downloads instantly — no document data is uploaded.
Built for sensitive workflows
Contracts & NDAs
Keep confidential agreements on your device. Avoid cloud exposure.
IDs & Passports
Combine scans for travel or compliance without sending them online.
Case & Student Files
Legal and education scenarios where privacy is non-negotiable.
Processing stays on your device. Learn about local processing →
Frequently asked
Do my PDFs ever leave my device?
No. Secure-Merge runs entirely in your browser; nothing is sent to a server.
Can I use it without uploading files?
Yes. Standard PDF merging is processed entirely in your browser — no files are uploaded. Reloading the page offline depends on your browser cache; dedicated offline support is not currently implemented.
Are there file size or page limits?
The free plan supports up to 150 pages and 200MB per merge. Plus plans support larger files and higher page counts.
Is the output quality preserved?
Yes. Merged PDFs preserve the original quality.
Merge PDFs privately — no uploads, no file sharing
Processed locally in your browser. No uploads. No tracking cookies. Free plan: up to 150 pages and 200MB.