PDF Merge

Combine multiple PDF files into one document. Merge PDFs in any order with drag-and-drop simplicity—no software installation needed.

100% client-side No signup Free forever

Drag & drop PDF files here or browse

Select multiple PDF files to merge (Max 20MB each)
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How to Use PDF Merge

How to Merge PDFs

  1. Upload PDFs: Click to select or drag and drop multiple PDF files.
  2. Arrange order: Drag files to reorder them as needed.
  3. Preview pages: Click on any PDF to see page thumbnails.
  4. Set options: Choose whether to keep bookmarks and metadata.
  5. Click Merge: Combine all PDFs into one document.
  6. Download: Save the merged PDF to your device.

Tips for Best Results

  • Name your source files descriptively for easier organization
  • Check page orientation before merging
  • Remove any password protection from PDFs before merging
  • For large merges, ensure adequate free memory in your browser
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Features

  • Merge unlimited PDF files
  • Drag and drop file ordering
  • Page preview thumbnails
  • Preserve or remove bookmarks
  • Keep document metadata option
  • Fast client-side processing
  • No file upload to servers
  • Works with large PDFs
  • Maintains original quality
  • Supports scanned PDFs
  • Mobile-friendly interface
  • Free with no registration
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About PDF Merge

Combining multiple PDF files into a single document is a common need—assembling reports, consolidating invoices, or creating portfolios. Our PDF merger handles this instantly in your browser, with intuitive controls for arranging files in your preferred order.

How to Merge PDFs

Simple three-step process:

  • Upload files: Drag and drop or click to select multiple PDFs
  • Arrange order: Drag files to reorder as needed
  • Download: Get your merged PDF instantly

Processing Details

The merger preserves original PDF quality—no compression or resolution loss. Bookmarks, links, and form fields from source documents are maintained. File size limits apply; very large documents may require desktop software.

Common Use Cases

Business: Combine invoices, contracts, or report sections. Education: Merge lecture notes, handouts, or research papers. Personal: Consolidate tax documents, travel itineraries, or receipts. Creative: Assemble portfolios from individual project PDFs.

Privacy and Security

Files are processed in your browser when possible. For server-side processing, uploaded files are automatically deleted after processing completes. Your documents are never stored permanently or accessible to others.

Tips for Best Results

Ensure source PDFs aren't password-protected (unlock before merging). Check page orientation consistency across documents. For documents with different page sizes, the merged PDF preserves original dimensions for each page.

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Frequently Asked Questions

How do I merge multiple PDF files into one?
Upload your PDF files (drag and drop or browse). Arrange them in the desired order by dragging. Click "Merge" to combine them into a single PDF. Download the merged file. All processing happens in your browser - files aren't uploaded to servers.
Is there a limit to how many PDFs I can merge?
You can merge up to 20 PDF files at once. For larger batches, merge in groups and then merge the results. There's also a combined file size limit (typically 100MB total) to ensure smooth browser performance.
Will merging affect the quality of my PDFs?
No! Merging is a lossless operation - we combine the files without re-encoding. Text, images, and formatting remain exactly as they were in the original files. The merged PDF maintains full original quality.
Can I change the order of pages when merging?
Yes! After uploading, drag and drop files to reorder them. The merged PDF will follow your specified order. For page-level control (reordering pages within a file), use our PDF editor tool.
Are my PDF files secure when using this tool?
Yes! All processing happens locally in your browser using JavaScript. Your files never leave your device - nothing is uploaded to our servers. This ensures complete privacy and security for sensitive documents.
Can I merge password-protected PDFs?
You'll need to enter the password for protected PDFs before merging. We can't bypass protection - you must have authorized access. Once unlocked for merging, the resulting file will be unprotected unless you add protection after.