Free Online PDF Merger
Merge multiple PDF files into one. Combine PDFs online for free with no file size limits.
Click to upload or drag and drop
Select multiple PDF files
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Free PDF Merger - Combine Multiple PDFs into One File
Merge multiple PDF documents into a single file with our secure, fast PDF merger tool. Perfect for consolidating reports, contracts, invoices, or any collection of PDFs. All processing happens in your browser—no uploads, zero privacy risks, completely free. Works on Windows, Mac, Linux, and mobile devices.
Quick How-To Guide
- 1Click "Select PDFs" to choose multiple PDF files from your computer
- 2Drag and drop the uploaded PDFs to reorder them in your preferred sequence
- 3Review the file list to ensure all documents are in the correct order
- 4Click "Merge PDFs" to combine all files into a single document
- 5Download the merged PDF to your device instantly
Why use our tool?
Unlimited PDF merging—combine 2, 10, or 100+ PDFs with no restrictions
Drag-and-drop reordering—arrange PDFs in your desired sequence before merging
100% client-side processing—files never leave your device, ensuring complete privacy
Preserve original quality—no compression or quality loss during the merge process
Lightning-fast performance—powered by modern browser technology for instant results
No file size limits—merge small receipts or large technical manuals without restrictions
Frequently Asked Questions
Find answers to common questions about using our tool, its features, and how it handles your data privacy.
No, absolutely not. Our PDF merger preserves 100% of the original quality, including images, fonts, formatting, and layout. Unlike some online tools that compress or reduce quality to save bandwidth, our client-side processing maintains every pixel and every detail exactly as it appears in the original files. The merged PDF is essentially a byte-perfect concatenation of your input files.
Yes, completely safe. This tool operates entirely within your web browser using JavaScript and WebAssembly. Your PDFs are never uploaded to our servers or transmitted over the internet. This makes it perfect for merging confidential documents like contracts, medical records, financial statements, or legal agreements. You can even use it offline after the initial page load.
No, password-protected PDFs must be unlocked before merging. If your PDF has a user password (required to open the document), you'll need to remove it first using a PDF password remover. This is a security measure to prevent unauthorized access to protected content. Once unlocked, you can merge the files normally.
There's no artificial limit imposed by our tool. The practical limit depends on your device's available memory (RAM) and browser capabilities. Most modern computers can easily handle merging 50-100+ PDFs simultaneously. For very large batches (100+ files), processing time will increase, but the tool will still work correctly.
Our PDF merger offers several advantages: it's completely free with no subscriptions, works on any device with a browser (including Chromebooks and mobile), requires no software installation, provides better privacy since everything stays on your device, and handles unlimited merges. For occasional PDF merging, it's often more convenient than installing heavyweight desktop software.
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