Merge PDF Files Online — Free, Private & Instant
Combine multiple PDF files into a single document.
Click to upload or drag and drop
PDF files only
Privacy first: This tool runs entirely in your browser. Your data never leaves your device.
Combine multiple PDF documents into a single file in seconds, entirely inside your browser. No files are ever sent to a server, so your documents stay completely private. Simply drag in your PDFs, arrange the order, and download the merged result.
How to Use PDF Merge
- Upload your PDFs: Click "Add Files" or drag and drop two or more PDF files onto the page.
- Arrange the order: Drag the file thumbnails to set the order in which pages will appear in the merged document.
- Merge: Click the "Merge PDFs" button to combine all files into one.
- Download: Download the resulting merged PDF file to your device.
Features
- Combine unlimited PDF files in any order
- Drag-and-drop reordering before merging
- Runs entirely in your browser — no server upload
- Free to use with no account required
- Preserves original page quality and content
- Works on desktop and mobile browsers
Common Use Cases
PDF merging is commonly used by students combining chapters, professionals assembling multi-part reports, and anyone who needs to send a single document instead of multiple attachments. It is especially useful when preparing contracts, portfolios, or invoices that span several files.
Frequently Asked Questions
- Is there a limit to how many PDFs I can merge?
- There is no hard limit on the number of files. Very large combined file sizes may be slower to process depending on your device, but all processing happens locally in your browser.
- Are my PDF files uploaded to a server?
- No. All merging happens directly in your browser using JavaScript. Your files never leave your device.
- Will the merged PDF lose quality?
- No. The tool combines the pages from your PDFs without re-encoding or compressing the content, so the original quality is preserved.
- Can I merge password-protected PDFs?
- Password-protected PDFs cannot be merged until they are unlocked. You will need to remove the password protection first before uploading.
- What browsers are supported?
- The tool works in all modern browsers including Chrome, Firefox, Safari, and Edge on both desktop and mobile.