Merge PDF files online for free with PDF Merge Free. Combine PDFs directly in your browser with no upload, no sign up, no watermark, and private local processing.

• Private browser-based PDF merger: Merge PDF files locally in your browser without sending documents to a cloud upload endpoint. Your documents stay on your device.
• Reorder documents: Add multiple PDF files, drag them into the right order, preview the first page thumbnail, and remove anything you do not need before creating the final merged PDF.
• No upload required: The merge process runs entirely in your browser.
• No sign up needed: Open the tool, add PDF files, merge, and download. No account wall.
• No watermark: Download a clean merged PDF suitable for work, school, forms, and client documents.
• Helpful file checks: The workspace checks file size, page limits, invalid PDFs, and encrypted files before merging.
• Fast repeat workflow: Clear the workspace, add another batch, and keep combining documents without changing tools.
• File Limits: Supports up to 20 PDF files, up to 100 MB each, and up to 300 pages each.

This tool is ideal for contracts, invoices, reports, forms, study materials, and everyday office paperwork. It's also useful for application packets, scanned paperwork, client documents, receipts, class notes, and monthly reports.

Recommended browsers: Use a modern browser such as Chrome, Edge, Safari, or Firefox for the best PDF preview and merge performance.