How to Merge PDF Files Online for Free Need to combine multiple PDF documents into one? Our free PDF Merger makes it incredibly easy. Whether you're combining reports, merging invoices, or creating a document collection, this tool handles it all - completely free and without uploading your files anywhere. 100% Private & Secure Unlike other online PDF tools that upload your files to their servers, Wux PDF Merger processes your documents entirely within your browser. Your sensitive documents never leave your device. No Limits or Watermarks Merge as many PDFs as you like, with no daily limits, file size restrictions, or ugly watermarks. It works on Windows, Mac, Linux, and mobile devices - anywhere you have a modern browser. How to use Click "Select PDF Files" and choose multiple PDF documents Drag and drop to reorder documents or individual pages Remove any pages you don't want in the final document Click "Merge & Download" to get your combined PDF Frequently Asked Questions Is the PDF Merger really free? Yes, 100% free with no hidden costs, subscriptions, or premium features. Are my PDF files uploaded to a server? No. All processing happens locally in your browser. We never see or store your files. Can I reorder individual pages? Yes! You can drag and drop both entire documents and individual pages to create your perfect order. Is there a file size or page limit? There are no server limits, but very large files may be limited by your browser's memory. Can I merge password-protected PDFs? Not currently. You'll need to remove the password first using another tool. What's the difference between this and PDF Splitter? PDF Splitter extracts pages from a single PDF. PDF Merger combines multiple PDFs into one document.