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PDF Merger – Free Online Tool

Quick Answer

Merge multiple PDF files into a single document easily with this free PDF merger from Toolscal. Upload your PDF files and combine them instantly without signup or downloads.

Merge multiple PDF files into a single document easily

What is PDF Merger? A PDF merger is a free tool by Toolscal that combines multiple PDF files into one document. Perfect for consolidating reports, invoices, contracts, or scanned pages into a single, organized PDF.

✨ Fully Functional: Select multiple PDFs, arrange them in order, and merge them into a single document. All processing happens in your browser - your files never leave your device!

About This Tool

Combines multiple PDF files into one document. Order adjustable. All processing local for privacy.

Accuracy Information

Notes: Preserves original PDF quality and structure. Processing may take time for large files. Client-side only.
Author: Toolscal Engineering
Maintained by: Toolscal Team
Last updated: December 29, 2025
Version: 1.1.0

How to Use

  1. 1Click "Select PDFs" to choose multiple PDF files
  2. 2Arrange PDFs in desired order using up/down arrows
  3. 3Remove unwanted files using the X button
  4. 4Click "Merge PDFs" to combine them (requires PDF.js library)

Why Use This Tool?

  • Combine multiple report sections into one document
  • Merge scanned pages into a single file
  • Consolidate invoices or receipts
  • Create comprehensive documentation from multiple sources
  • Combine contracts or legal documents

Frequently Asked Questions

How do I merge PDF files?

Select multiple PDF files, arrange them in your desired order using the up/down arrows, then click merge. Note: This is a demonstration interface. For actual PDF merging, you'll need a PDF processing library.

Is there a limit to file size or number of PDFs?

Browser-based merging typically works best with smaller files (under 10MB each) and fewer than 10 files. For larger operations, consider desktop software.

Are my PDFs uploaded to a server?

No! All PDF processing happens in your browser. Your files never leave your device.

Can I merge password-protected PDFs?

You must unlock password-protected PDFs before merging. Remove passwords using PDF editing software, then merge the unlocked files with this tool.

Does merging PDFs reduce quality?

No, merging PDFs preserves the original quality of all pages. Text, images, and formatting remain unchanged. The merged file is a direct combination of the source PDFs.

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