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Merge PDF - Combine PDF Files Online for Free

The best free online tool to merge PDF files. Combine multiple PDFs into one document securely. No installation, registration, or watermarks required. Fast, easy, and 100% free PDF merger.

Secure & Private Fast Processing

Drop your files here

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.pdf

Merge Options

Customize how your PDFs are combined

How to Merge PDF Files

1. Select Files

Upload your PDF files by clicking the Select button or dragging them onto the page.

2. Arrange Files

Drag and drop the file thumbnails to put them in the desired order.

3. Merge & Download

Click Merge PDF and download your combined document instantly.

The Ultimate Free PDF Merger

Merging PDF files is essential for organizing digital documents efficiently. Whether you are a student combining research papers, a professional compiling business reports, or simply need to join invoices for personal records, CarePDF offers the most reliable solution. Our tool is fast, completely free, and designed with your privacy in mind, processing files securely without permanent storage.

Why Choose Our PDF Combiner?

We provide premium advanced features that other tools often charge for, making us the best choice for your document needs:

  • Standardize Page Sizes: Automatically resize mixed documents to a uniform standard like A4, Letter, A3, or Legal.
  • Smart Margins: Add None, Small, Medium, or Large margins to ensure your content prints perfectly without being cut off.
  • Orientation Control: Smartly handle mixed portrait and landscape pages for a consistent reading experience.
  • Drag & Drop Reordering: Easily arrange your files in any order before merging with our intuitive interface.
  • Privacy Guaranteed: We use SSL encryption and automatically delete all files after 1 hour.

How to Combine PDF Files Online

Follow these simple steps to merge your documents into a single professional PDF:

  1. Upload Files

    Click "Select Files" or drag and drop your PDFs into the upload area. You can add up to 50 files.

  2. Arrange Order

    Simply drag and drop the file thumbnails to arrange them in the exact sequence you want.

  3. Configure Settings

    Choose a unified Page Size (e.g., A4), set Margins, and select Orientation if needed.

  4. Merge & Download

    Click the "Merge PDF" button to process your files and download your new organized document instantly.

Common Use Cases for Merging PDFs

Our PDF merger is perfect for various scenarios:

  • Combine Invoices: Merge monthly invoices into a single file for easy record-keeping and accounting.
  • Create eBooks: Combine chapters or sections into a complete book or manual.
  • Compile Reports: Merge data reports, charts, and analysis into comprehensive business documents.
  • Organize Contracts: Combine multiple contract pages and appendices into a single file.
  • Academic Papers: Merge research papers, references, and appendices for submission.

Why Merge Your PDFs?

Combine Multiple PDFs Instantly

Select multiple PDF files and merge them into a single document in seconds. Our customized PDF merger is fast, reliable, and secure.

Easy Drag & Drop Reordering

Simply drag and drop your files to arrange them in the exact order you want. Organizing your documents has never been easier.

Flexible Page Settings

Standardize page sizes, add margins, and control orientation. Perfect for creating professional, consistent documents.

Secure Cloud Processing

All file processing happens on secure servers with automatic deletion after 1 hour. Your privacy is our priority.

Frequently Asked Questions

How to merge PDF files online for free?

1. Click "Select Files" to upload your PDFs.
2. Drag and drop file thumbnails to reorder them.
3. Choose your page size and margin settings.
4. Click "Merge PDF" to combine them into one document.

Is it safe to merge PDFs online?

Yes, absolutely. CarePDF uses SSL encryption for file transfers, and all uploaded files are permanently deleted from our servers automatically after 1 hour.

Can I combine PDF files on Mac, Windows, or Linux?

Yes! CarePDF works in your browser, so it is compatible with all operating systems including Windows, Mac, Linux, and mobile devices (iOS/Android).

Is there a limit to the number of files?

You can merge up to 50 files at once for free, with a maximum of 50MB per file and 200MB total. There are no hidden costs or watermarks added to your files.

Do I need to install software to combine PDFs?

No. CarePDF is a cloud-based tool. You can merge, split, and compress PDFs directly in your web browser without downloading any software.

Can I reorder pages before merging?

Yes! You can drag and drop file thumbnails to arrange them in any order. The files will be merged in the order you specify.

What page sizes are supported?

CarePDF supports all standard sizes including A3, A4, A5, Letter, Legal, and Tabloid. You can also keep the original page sizes.