BetaPDF Pro AI is currently in Open Beta. Enjoy unlimited access to all AI features for the next 45 days!
Merge Multiple PDFs at Once
Got dozens of PDFs? Batch merge multiple PDF files into one large master document in seconds.
Drop PDFs here or click to browse
Free plan · up to 50 MB per file
How to merge multiple pdfs at once?
Upload Files
Drag and drop the multiple PDF documents you want to combine.
Reorder Visually
Drag the thumbnails into the exact order you want them to appear in the final document.
Instant Download
Click Merge. Your computer instantly stitches them together without uploading anything.
View Your Processed Files
- Local history stored in your browser
- Quick access to recent downloads
- Files auto-deleted from our cloud
Why use PDF Pro for this?
Got dozens of PDFs? Batch merge multiple PDF files into one large master document in seconds. Our advanced WebAssembly-powered merging engine ensures that your documents are combined perfectly without any loss of quality or formatting.
Is it Safe to Merge Sensitive PDFs Online?
Absolutely. Unlike other free PDF tools, we use Zero-Upload processing. We never read, analyze, or upload your data to a cloud server. Your documents are stitched together right inside your device's memory.
Frequently Asked Questions
Is there a limit to how many PDFs I can merge?
Because we process files locally on your device using WebAssembly, you can merge hundreds of PDFs without hitting server limits.
PDF Pro tools are 100% cloud-based and secure. Your documents are processed with end-to-end encryption.