PDF Merger

Combine multiple PDF files into one document effortlessly.

📑

Drag & drop PDF files here or click to upload

Supported: PDF files only

Max 50MB per file

Selected PDFs (0) - Drag to reorder

⚙️ Merge Settings

Merge Mode

Output File Name

Processing... 0%

✅

PDFs Merged Successfully!

File: merged-document.pdf
Total Pages: 0

💡 Smart Tips

Drag PDF items to reorder them before merging
Files are merged in the order displayed in the list
Large PDF files may take longer to process
Password-protected PDFs cannot be merged
Interleave mode alternates pages from each file

📖 How to Use This Tool

Upload multiple PDF files by clicking or dragging them into the upload area
Drag and drop PDF items to reorder them in your preferred sequence
Choose merge mode: Append (default) or Interleave pages
Enter a custom file name for the merged output
Click "Merge PDFs" and wait for processing to complete
Download your combined PDF file

✨ Uses & Benefits

Combine multiple contracts into one document
Merge chapters of a report or thesis
Consolidate invoices and receipts
Combine scanned pages into a single file
Create complete document packages for submission
Organize related documents for archiving
Reduce file clutter by merging related PDFs

🔗 Related PDF Tools

❓ Frequently Asked Questions

Is this tool free?

Yes, completely free with no limits on the number of files or merges.

Are my files safe?

Absolutely. All processing happens locally in your browser. Files are never uploaded to any server.

How many PDFs can I merge at once?

You can merge unlimited PDFs, but browser memory may limit very large batches. For optimal performance, merge 2-20 files at a time.

Can I change the order of PDFs before merging?

Yes! Simply drag and drop the PDF items to reorder them before clicking "Merge PDFs".

Why did my merge fail?

Common causes: corrupted PDF files, password-protected PDFs, extremely large file sizes, or browser memory limits.

What is Interleave mode?

Interleave mode alternates pages from each PDF. For example, page 1 from PDF 1, page 1 from PDF 2, page 2 from PDF 1, etc.

🔒 Privacy & Security: All file processing happens locally in your browser. No files are uploaded to our servers. Your documents remain completely private and secure.

⚠️ Limitations & Notes

Max file size: 50MB per PDF
Password-protected PDFs are not supported
Browser memory limits may affect very large merges
Requires modern browser (Chrome, Firefox, Safari, Edge)
JavaScript must be enabled

Disclaimer: This tool is provided for general use. Results may vary based on PDF complexity and file size. Always verify merged documents meet your requirements.