PDF & Documents100% Free ToolPopular

Free Merge PDF (Combine Multiple PDF Files) Online

Combine multiple PDF documents into a single organized file with drag-and-drop page reordering 100% in your browser. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.

100% Client-Side0ms Latency
PDF Combine Engine

Click to browse or drop PDF files here

Supports multi-file selection • All merging occurs 100% in browser memory

Documents to Merge (2)Total: ~5 Pages (415 KB)
1
Contract_Agreement_Part1.pdf
239.3 KB • ~3 Pages
2
Exhibit_A_Schedule.pdf
175.8 KB • ~2 Pages

How It Works

1

Select PDF Documents

Drag and drop two or more PDF files into the merge workspace.

2

Reorder Files

Drag and drop document thumbnail cards into your desired page sequence.

3

Process Locally

The browser's WebAssembly PDF engine stitches the documents together.

4

Download Merged PDF

Save your unified PDF document immediately.

Frequently Asked Questions

No, Gronex.ai uses client-side execution. Your files never leave your computer's browser memory.

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