Merge PDF Files - Free & Private
Combine multiple PDFs into one document instantly in your browser. No uploads, no registration, 100% free and secure.
Drop PDF files here or click to browse
Select 2 or more PDF files to merge
💡 Tip: Press Ctrl+O (or Cmd+O on Mac) to select files
How to Merge PDF Files
- 1
Select or drag-and-drop your PDF files
Choose 2 or more PDF files from your computer
- 2
Reorder and customize your files
Drag files to change their order. Optionally click "Select Pages" to choose specific pages - you can click individual pages or use the Quick Select field to enter ranges like "1-5, 10-15, 20"
- 3
Click "Merge PDFs" and download
Your combined file downloads instantly - all processing happens in your browser
Why Choose PDFCombiner?
100% Private
Files never leave your device. All processing happens in your browser.
Page-Level Control
Select specific pages from each PDF. No need to split files first.
Lightning Fast
Instant processing with no waiting. No server uploads or queues.
Visual Previews
See thumbnail previews of each PDF to identify your files easily.
Bookmark Preservation
Automatically preserve and adjust PDF bookmarks/outlines in merged documents.
Completely Free
No limits, no registration, no hidden fees. Merge unlimited PDFs.
No Registration
Start merging immediately. No account or email required.
⚠️ Disclaimer
This tool is provided "as-is" for convenience and is designed for general use. While we strive for accuracy and reliability, we cannot guarantee that merged PDFs will preserve all formatting, metadata, or special features in all cases. Please verify the output meets your requirements before using merged documents for important purposes. For critical documents, consider consulting with a professional PDF service.
Common Use Cases
Business Reports
Combine quarterly reports, financial statements, and analysis documents into a single comprehensive business report.
Academic Work
Merge research papers, appendices, and supplementary materials into a complete thesis or dissertation document.
Legal Contracts
Combine contracts, amendments, exhibits, and schedules into a single legally-binding agreement document.
Creative Portfolios
Merge design samples, case studies, and project descriptions into a professional portfolio presentation.
Event Documentation
Combine agendas, presentations, handouts, and meeting notes into a single event documentation package.
Project Proposals
Merge executive summaries, technical specifications, budgets, and timelines into a complete project proposal.
Why Privacy Matters: PDFCombiner vs Others
Most online PDF tools upload your files to their servers for processing. Here's why PDFCombiner's privacy-first approach is different:
Traditional PDF Tools
- Upload files to external servers
- Files stored temporarily on their servers
- Potential data breaches or unauthorized access
- Reliant on server uptime and speed
- Often require account creation or payment
- May sell or analyze your document metadata
PDFCombiner
- 100% client-side processing - files never leave your device
- Zero server storage - nothing uploaded or saved
- Impossible to breach - your data stays with you
- Works offline - no internet required after page load
- Completely free - no registration, no limits, no hidden fees
- No tracking - we don't collect or analyze your data
🔒 Perfect for sensitive documents: Financial reports, medical records, legal contracts, confidential business data
Frequently Asked Questions
Is it safe to merge PDFs online?
Yes! PDFCombiner processes your files entirely in your browser. Your PDFs never get uploaded to our servers or anyone else's. Everything happens locally on your device. Learn more in our complete guide →
How many PDFs can I merge?
There's no limit! Merge as many PDFs as you want. The only constraint is your browser's memory, which can typically handle dozens of files.
Do I need to create an account?
No! PDFCombiner is completely free and doesn't require any registration or login. Just visit the site and start merging.
What happens to my files after merging?
Your files are immediately removed from browser memory after you download the merged PDF. We don't store or keep any copies.
Can I select specific pages from each PDF?
Yes! Click the "Pages" button next to any file with multiple pages to select specific pages. You can choose exactly which pages to include in the merged PDF, eliminating the need to split files first.
Can I merge large PDF files?
Yes! PDFCombiner can handle large files, but processing time depends on your device's capabilities. For best performance, we recommend keeping total file size under 100MB. Very large files may take longer to process and consume more browser memory.
What keyboard shortcuts are available?
PDFCombiner supports keyboard shortcuts for faster workflow:
- Ctrl+O (or Cmd+O on Mac) - Open file selection dialog
- Tab - Navigate through interactive elements
- Enter or Space - Activate buttons and open file picker
- Arrow Keys - Navigate through file list when focused
Does this work on mobile devices?
Yes! PDFCombiner works on mobile phones and tablets. The interface is fully responsive and optimized for touch interactions. You can select PDFs from your device and merge them on the go.
Can I merge password-protected PDFs?
No, password-protected PDFs cannot be processed. You'll need to remove the password protection from your PDFs first before merging them. This is a security feature to respect file encryption.
Will merging PDFs reduce quality?
No! PDFCombiner preserves the original quality of your PDFs. Pages are copied exactly as they are without compression or quality loss. Text, images, and formatting remain intact.
Which browsers are supported?
PDFCombiner works in all modern browsers including Chrome, Firefox, Safari, and Edge. We recommend using the latest version of your browser for the best experience and performance.
What file formats are supported?
PDFCombiner works exclusively with PDF files (.pdf). If you have documents in other formats (Word, images, etc.), you'll need to convert them to PDF first before merging.
How to merge PDFs on Mac without Adobe?
PDFCombiner works perfectly on Mac! Simply open this website in Safari, Chrome, or any modern browser, drag and drop your PDF files, and click "Merge PDFs". No Adobe Acrobat or Preview app needed. Everything happens right in your browser, making it faster and more private than traditional desktop software.
How to merge PDFs on Windows 10/11 for free?
PDFCombiner is completely free on Windows 10/11 with no installation required! Open this website in Edge, Chrome, or Firefox, select your PDF files, and merge them instantly. Unlike Windows' built-in PDF tools which are limited, PDFCombiner offers page selection, bookmarks preservation, and works entirely offline after the page loads.
Can I merge PDFs on iPhone/iPad?
Yes! PDFCombiner works on iPhone and iPad using Safari or any mobile browser. Simply visit this website, tap the file upload button to select PDFs from your Files app, iCloud Drive, or other sources, then merge them. The interface is optimized for touch and works great on mobile devices. You can even add PDFCombiner to your home screen for quick access.
How to merge PDFs and keep hyperlinks?
PDFCombiner automatically preserves hyperlinks, bookmarks, and internal links when merging PDFs. External links (URLs) and internal document links remain clickable in the merged output. Our bookmark preservation feature also ensures that table of contents and navigation structures are maintained across the merged document.