PDF Merger

Combine multiple PDF files into one document instantly. Secure, free, and works entirely in your browser.

Click or drag PDF files here

Upload multiple PDFs to merge (max 50MB per file)

Combine PDF Files Online

A PDF merger allows you to combine multiple PDF files into a single document, preserving all original formatting, images, and text. This online PDF combiner tool processes files entirely in your web browser, ensuring your sensitive documents never leave your device. Whether you need to merge contracts, reports, presentations, or invoices, this free PDF joiner makes it simple to organize and consolidate your documents.

How to Merge PDF Files

Using this PDF merge tool is straightforward. Upload multiple PDF files by clicking the upload area or dragging files directly onto the page. Once uploaded, you can rearrange the order of your documents using the up and down arrows next to each file. The final merged PDF will contain all pages in the exact sequence shown. Enter a custom name for your combined document and click the merge button to instantly download your consolidated PDF.

Browser-Based Security

Unlike traditional online PDF combiners that upload your files to remote servers, this tool performs all processing locally in your browser using advanced JavaScript libraries. Your PDF files never leave your computer, providing complete privacy and security for confidential documents. This approach eliminates privacy concerns and works even offline once the page is loaded, making it ideal for sensitive business documents or personal files.

Benefits of Merging PDF Pages

Combining PDF files offers numerous advantages for document management. Create comprehensive reports by merging individual chapters, consolidate multiple invoices into a single billing document, or combine related contracts for easier review. Merged PDFs are simpler to share via email, reduce attachment clutter, and create more organized archives. This PDF combiner tool maintains original quality without compression, ensuring your merged document looks exactly like the source files.

Tips for Best Results

For optimal results when merging multiple PDFs, ensure all source files are complete and not corrupted before uploading. Remove password protection from encrypted PDFs beforehand, as this tool cannot process secured files. Consider the logical flow of content when arranging file order—place cover pages first and appendices last. If merging many large files, be patient during processing as complex PDFs with many images may take longer to combine.

How It Works

1

Upload PDFs

Click or drag multiple PDF files to upload

2

Arrange Order

Use arrows to reorder files as needed

3

Merge & Download

Click merge to combine and download instantly

🔒 Privacy First

All PDF processing happens in your browser. Your files never leave your device.

Key Features

  • • No file upload required
  • • Unlimited merges
  • • Preserves quality
  • • Works offline
  • • No registration

Related Tools

🖼️
Image Compressor
Compress images
🖼️
Image to Base64
Convert images
📊
Barcode Generator
Generate barcodes
📱
QR Code Generator
Create QR codes
🔄
CSV to JSON Converter
Convert CSV to JSON
💾
File Size Converter
Convert file sizes

Frequently Asked Questions

How many PDF files can I merge at once?
This online PDF merger allows you to combine multiple PDF files in a single operation. While there is no strict limit on the number of files, each individual PDF must be under 50MB. For optimal performance, we recommend merging up to 20 files at once. You can arrange files in any order before merging.
Is this PDF combiner tool really free to use?
Yes, this PDF merger is completely free with no hidden costs, subscriptions, or usage limits. You can merge PDF files instantly without signing up for an account. All processing happens directly in your browser, so your documents never leave your device, ensuring complete privacy and security.
Are my PDF files secure when using this merger?
Absolutely. This PDF merge tool processes everything locally in your web browser using client-side JavaScript. Your PDF files are never uploaded to any server, meaning your sensitive documents remain completely private on your device. No data is stored, tracked, or accessible by anyone else.
Can I rearrange the order of PDF pages before merging?
Yes, you can easily reorder your PDF files before combining them. Use the up and down arrow buttons next to each file to move them into your desired sequence. The final merged PDF will contain all pages in the exact order displayed, so arrange your documents carefully before clicking the merge button.
What file size limit does this PDF joiner have?
Each individual PDF file must be under 50MB in size. This limit ensures smooth processing in your browser without performance issues. If you have larger files, consider splitting them first or compressing them before merging. The combined output PDF size will be the sum of all input files.
Can I merge password-protected or encrypted PDFs?
This PDF combiner currently does not support merging password-protected or encrypted PDF files. You will need to remove password protection from your PDFs before using this tool. Once merged, you can use other tools to add password protection to your combined document if needed.
Does this tool work on mobile devices and tablets?
Yes, this online PDF merger is fully responsive and works on smartphones, tablets, laptops, and desktop computers. The interface adapts to your screen size, making it easy to combine PDF files on any device with a modern web browser. All features are accessible on mobile devices.
Will the merged PDF maintain the original quality and formatting?
Yes, this PDF merge tool preserves the original quality, formatting, fonts, images, and layout of your source documents. The combined PDF will contain exact copies of all pages from your input files without any compression or quality loss. Hyperlinks, bookmarks, and other PDF features are maintained.

© 2026 Tool Vault - Free online PDF merger and 100+ other tools.

Fast. Private. No tracking. All processing in your browser.