PDF Merger - Free Desktop App
Combine multiple PDF files into one document. Drag, drop, reorder. No uploads, works offline, unlimited merges.
Merge Your PDFs
Combine unlimited PDFs
Your PDF files will be merged into a single document. Reorder pages by dragging, add bookmarks, and preserve all links and formatting.
Note: All processing happens locally on your computer. Your files never leave your device.
Why Desktop PDF Merger Beats Online Tools
| Feature | Online Tools | Diwadi Desktop |
|---|---|---|
| Upload Required | ❌ Required | 🎯 Never |
| File Size Limit | ❌ 50MB max | ♾️ Unlimited |
| Speed | ⏳ Slow (upload/download) | ⚡ Instant |
| Batch Processing | ❌ 1 file | ✅ 1000s |
| Privacy | ⚠️ Risky (cloud upload) | 🔒 100% Local |
| AI Features | ❌ No | 🤖 Yes |
| Offline | ❌ No | ✅ Yes |
| Cost | Free | Free ✅ |
How It Works
Download & Install
Takes just 30 seconds. No account, no credit card required.
Browse & Select Your PDF Files
Navigate your files like a regular file browser. Batch processing supported.
Get Single Merged PDF (Instant)
Processing happens locally on your computer. No upload wait.
Perfect For Every Use Case
From contracts to portfolios, merge PDFs for any purpose
Contracts & Agreements
Combine contracts with signatures, appendices, and terms into one complete document.
Business Reports
Merge monthly reports, financial statements, and analytics into comprehensive documents.
E-books & Manuals
Compile chapters, sections, and appendices into complete publications.
Design Portfolios
Combine project samples, case studies, and credentials into a professional portfolio.
Invoices & Receipts
Consolidate billing documents for accounting, expense reports, or tax purposes.
Academic Papers
Merge research papers, citations, and appendices for submission or review.
Why Choose Diwadi Desktop?
Privacy First
Files never leave your computer. No cloud upload, no data collection, 100% local.
Lightning Fast
Process files 10x faster than online tools. No upload wait, no download wait.
No Limits
Convert unlimited files of any size. Batch process thousands in one click.
AI-Powered
Smart formatting detection, auto-cleanup, better accuracy.
Works Offline
No internet required. Perfect for flights, secure environments.
Free to Use
No trial limits, no watermarks, no credit card required.
Frequently Asked Questions
Is the PDF merger really free?
Yes, completely free with no limits. Merge unlimited PDF files of any size, as many times as you want. No watermarks, no signup, no credit card required.
Do my PDFs get uploaded to a server?
Never. All PDF merging happens locally on your computer. Your files never leave your device - unlike iLovePDF, SmallPDF, or other online tools that require uploading sensitive documents.
Can I reorder pages before merging?
Yes! Drag and drop to reorder individual pages or entire documents before merging. You have complete control over the final document structure.
Will bookmarks and links be preserved?
Yes, Diwadi preserves hyperlinks, bookmarks, and internal references when merging PDFs. You can also optionally add bookmarks for each merged file.
How many PDFs can I merge at once?
Unlimited. Merge 2, 20, or 200 PDFs in a single operation. There's no file count limit - only your computer's memory and disk space.
What about encrypted or password-protected PDFs?
You can merge password-protected PDFs if you know the password. Enter the password when prompted, and Diwadi will include the file in the merge.
Does it work offline?
Yes, Diwadi works 100% offline after installation. Perfect for travel, flights, or secure environments without internet access.
What platforms are supported?
Mac (Apple Silicon and Intel), Windows (10, 11). Download the version for your operating system.