Merge PDF

Evorenza Merge PDF is a free browser-based tool that joins multiple PDF documents into a single organized file. Files are processed on your device and are never uploaded.

How to use Merge PDF in 3 simple steps

  1. Step 1: Select or drop two or more PDF files into the workspace (up to 100 files, up to 500 MB each).
  2. Step 2: Drag and drop document cards to arrange them into your preferred sequence.
  3. Step 3: Click "Merge PDFs" to combine the documents into a unified file and download it.

Is Evorenza Merge PDF safe for confidential files?

Yes, Evorenza Merge PDF provides total privacy for confidential business contracts, medical records, and legal briefs. Every page is merged locally on your computer or phone without sending a single byte over the web.

Because your documents are never uploaded to a cloud server, there is zero risk of data leaks, server breaches, or unconsented caching.

How does Merge PDF work without uploading?

The tool uses the pdf-lib library running in client-side JavaScript. It reads the binary structures of your selected files, copies the specified page dictionaries into a new PDF document in memory, and triggers an immediate local download.

The browser allocates an ArrayBuffer for each file, links the cross-reference tables and font descriptors, and serializes the combined output locally.

Is it really free?

Yes, Evorenza Merge PDF is completely free. There are no limits on the number of merges you can perform and no page count restrictions.

You will never see a prompt asking for payment or an email address to unlock your merged file.

What file types and sizes are supported?

Standard .pdf files up to 500 MB each are supported, with batch merging capable of handling up to 100 documents in one operation.

You can reorder entire files or remove unwanted documents before initiating the merge.

Technical Specifications & Limitations

Supported Formats: .pdf documents (MIME type application/pdf)

Execution Limits: Up to 100 PDF documents per merge batch, up to 500 MB per file, combined using pdf-lib client-side.

Memory & Device Considerations: Merging encrypted or password-protected PDFs requires unlocking the files first so the underlying page streams can be read.

Last updated: 2026-11-04 • 100% Client-Side In-Browser Execution

Frequently Asked Questions

Is Evorenza really free?

Yes, Evorenza Merge PDF is 100% free with no restrictions.

Do my files get uploaded to a server?

No. File merging happens 100% on your device inside your browser.

Can I use Evorenza for client documents?

Yes. It meets high security requirements because files never leave your device.

Does Evorenza add a watermark?

No. Merged documents are clean and identical in formatting to your source pages.

Do I need to create an account?

No sign-up or registration is needed.