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How to Merge PDF Files Online — Step-by-Step Guide

When to Merge PDFs

  • Combine a cover letter and resume into one application PDF
  • Merge monthly financial reports into an annual report
  • Combine scanned pages from multiple scanning sessions
  • Attach multiple documents as one file for email

Step-by-Step: Merge PDFs Online

  1. Open PDF Merger.
  2. Upload your PDF files (you can select multiple at once).
  3. Drag to reorder the documents in the sequence you want.
  4. Click Merge.
  5. Download the combined PDF.

Tips for Better Merged PDFs

  • Check page orientation — mixing portrait and landscape pages can be confusing
  • Compress large PDFs before merging to keep the final file manageable
  • Add bookmarks/table of contents for merged documents longer than 10 pages
  • Verify the final merge result by scrolling through all pages
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