Merge PDF
Combine multiple PDF files into a single document. Drag to reorder before merging.
Free Online PDF Merger
Need to merge PDF files into a single document? This free merge PDF tool lets you combine multiple PDFs into one file directly in your browser. No uploads, no accounts.
When you merge PDF files with 100X Tools, everything happens locally. Your documents never leave your device.
Whether you need to merge PDF files for a presentation or combine scanned documents into one file, this tool handles it in seconds.
How to Merge PDF
Drop your PDFs
Drag two or more PDF files into the upload area.
Review the order
Files are listed in order. Remove any you don't need.
Click Merge
All pages combine into a single PDF.
Download
Your merged PDF is ready.
Why Use Merge PDF on 100X Tools
Private by default
All processing happens in your browser. Your files never leave your device. We cannot see or access your documents. This makes it the safest way to handle sensitive or confidential files.
No accounts, no limits
No signups, no watermarks, no daily limits. Every tool is free and works immediately. There is nothing to install or configure.
Works offline
Once the tool loads, it can work without an internet connection. Your files are processed locally — no network required after the initial page load.
Fast and accurate
Results in seconds. No waiting for server processing, no queue, no upload/download delays. The tool runs at the speed of your device.
Frequently Asked Questions
How many PDFs can I merge?+
There is no limit. You can merge as many PDF files as your browser can handle.
Will merging affect quality?+
No. Merging simply combines pages. Each page retains its original quality.
Related Tools
After merging, compress the result with Compress PDF. Extract pages with Split PDF.
Private by Design
Unlike many free online tools, we do not upload your files to any server. We do not store or track your documents. We do not require registration or accounts. Everything runs locally in your browser. You can safely use this tool with sensitive documents — contracts, invoices, reports, or personal files.