Merge PDF files online for free with our browser-based PDF merger. Combine multiple PDFs into one document, reorder pages by drag-and-drop, and download the merged file instantly. Powered by pdf-lib running locally in your browser — your documents are never uploaded, making this safe for contracts, financial statements, medical records, and other confidential PDFs.
Drag multiple PDF files into the upload area, or click to select them. Add as many as you need.
Drag-and-drop the file thumbnails to set the order pages will appear in the merged document. Remove any file you don't want with the X button.
Click Merge to combine all PDFs into a single file. Download starts immediately.
Every PDF merger that asks you to upload your files keeps a copy of those documents — temporarily or permanently — on their servers. For legal documents, financial records, signed contracts, or anything else confidential, that's a serious privacy risk. This merger runs in your browser, so your PDFs never leave your device.
Use the merger to combine signed pages back into a single contract, assemble a multi-section report from individual chapter PDFs, bundle scanned receipts for an expense report, or merge boarding passes and itineraries for a trip.
There's no file count limit, no page count limit, and no signup. The tool uses the same pdf-lib library that production document workflows rely on, so the merged output is fully standards-compliant and opens correctly in Adobe Acrobat, Preview, Chrome, and every other PDF reader.