Can I reorder the PDF files before merging?

Yes! You can easily reorder files using the Move Up and Move Down buttons before generating the merged PDF.

Is there a page limit or file size restriction?

There are no artificial software paywalls or restrictions. In practice, modern desktop and mobile browsers comfortably process dozens of pages and files up to 50 MB+ directly in available memory.

PDF Merger

Combine multiple PDF documents into a single file in your browser. Reorder files before assembling.

Select or drop PDF files to merge

Select two or more PDF files. You can arrange their sequence before merging.

How to Use PDF Merger

Simple step-by-step instructions. No sign-up required.

Select PDF Documents

Drop two or more PDF documents into the upload box.

Reorder Files

Arrange files in the exact sequence you want them to appear in the final merged file.

Merge & Download

Click 'Merge PDFs' to assemble the new document and download it immediately.

Private In-Browser Execution

When using PDF Merger, all processing occurs locally on your machine via JavaScript and WebAssembly. Your files are not transmitted to or stored on any server.

Features & Specifications

Combine multiple PDF documents into a single organized file

Drag-and-drop visual reordering of uploaded PDFs

Real-time page count and file size calculation

Pure client-side processing using pdf-lib

Preserves original document fidelity and vector text

Frequently Asked Questions

Answers to common questions regarding PDF Merger.

Yes, 100%. Merging occurs entirely in your browser using client-side WebAssembly via pdf-lib. Your documents never leave your computer and are never transferred across the network to our or any third-party servers.

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