PDF Tool

Merge PDF Files

Merge multiple PDF files into a single document. Drag to reorder pages, select specific page ranges per file, and preserve bookmarks and links.

Drop your files here, or browse

PDF files only · Up to 50 files · Drag to reorder

Related tools

Split PDF
Split or extract pages from a PDF
Compress PDF
Reduce PDF file size
Rearrange PDF Pages
Reorder, rotate, and delete PDF pages

How to Merge PDF

  1. Upload your PDFs

    Drop your PDF files into the upload area or click to browse. You can add up to 50 files.

  2. Arrange and select pages

    Drag files to reorder them. Expand any file to select specific pages. Set advanced options as needed.

  3. Merge and download

    Click "Merge & Download" — your combined PDF is ready in seconds, processed entirely in your browser.

Features

  • Drag-and-drop file reorder
  • Per-file page selection
  • Preserve bookmarks & internal links
  • Optional blank page between documents
  • Password-protected PDF support
  • Up to 50 files, 200MB per file

Frequently Asked Questions

Does Docukit upload my PDFs to a server?
No. All merging happens 100% in your browser using WebAssembly. Your files never leave your device.
How many PDFs can I merge at once?
Up to 50 PDF files. For very large batches, we recommend splitting into groups if you notice memory warnings.
Can I reorder pages from different PDFs?
Yes — expand any file card to see its page thumbnails and select exactly which pages to include, in what order.
Are encrypted PDFs supported?
Yes. You will be prompted to enter the password for any encrypted PDF before it can be merged.