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Merge PDF

Upload PDFs, preview every page, rearrange or delete pages, then download your merged PDF. Your files never leave your device.

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Up to 25 files · 40 MB per file · 100 MB total · for higher limits

⬆️Upload PDFs
↕️Arrange pages
⬇️Download result

What is Merge PDF?

The Merge PDF tool lets you combine multiple PDF files into a single, unified document in seconds. Whether you need to combine contracts, reports, invoices, or presentation slides, simply upload your PDFs, arrange the pages in any order by dragging and dropping thumbnails, remove unwanted pages, then click to download your perfectly merged PDF. The tool renders full-page previews of every document so you can verify the order before merging. All processing happens entirely in your browser using WebAssembly — no files are ever uploaded to a server, keeping your documents completely private and secure.

How It Works

Upload one or more PDF files using the drop zone or file picker. The tool extracts and displays thumbnail previews for every page across all uploaded documents. Drag page thumbnails to reorder them in the exact sequence you need, or click the delete button on any page to remove it from the output. Once satisfied with the arrangement, click "Merge & Download" to combine all pages into a single PDF file, which is then saved directly to your device.

Key Benefits

  • Combine unlimited PDFs into one organised document
  • Drag-and-drop page reordering — put pages in any order you want
  • Remove unwanted pages before merging
  • 100% private — no file upload, no server processing
  • Preserves full original quality of all pages
  • Free to use — no account required for standard file sizes

Frequently Asked Questions