Merge PDF

Combine PDF Files Online for Free

merge

Drag & drop PDF files here, or browse

Add two or more PDFs to merge

How It Works

Add PDF files Drag and drop your PDF files or click to browse. Add as many as you need.
Arrange the order Use the up and down arrows to reorder your PDFs. The final document follows this order.
Merge Click merge. Everything runs locally in your browser - nothing is uploaded.
Download Your merged PDF downloads automatically. One file, all your pages.

Features

lock
Private & Secure Combine contracts, legal documents, or tax forms without a third party ever seeing them. All merging happens locally in your browser.
merge
Combine Any PDFs Merge contracts, reports, scans, or any PDF documents into a single file.
reorder
Custom Page Order Reorder your files before merging. The final PDF follows your arrangement.
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No File Limits No page limits, no file size caps, no watermarks. Merge as many PDFs as you need.
speed
No Upload Wait Other tools upload your files to a server and make you wait. Apparatus merges locally - results are instant, even for large documents.
money_off
Completely Free No subscriptions, no hidden fees, no watermarks. Open the page and start merging immediately.

Supported Formats

FAQ

How do I merge PDF files?

Drag and drop your PDF files into the tool, arrange them in the order you want using the up/down arrows, and click Merge. Your combined PDF downloads automatically.

Is it safe to merge PDFs online?

Yes. Most online PDF mergers upload your documents to a remote server, which is a risk for sensitive files like contracts or tax forms. Apparatus is different - it processes everything in your browser using JavaScript. Your PDFs are never uploaded anywhere.

How many PDFs can I merge at once?

There is no hard limit. You can merge as many PDF files as your browser's memory allows. Most users can comfortably merge dozens of files at once.

Will merging change the quality of my PDFs?

No. Merging copies pages directly from the source files without re-encoding, re-compressing, or converting them. Every font, image, and vector graphic is preserved exactly.

Can I reorder pages before merging?

Yes. After adding your files, use the arrow buttons to rearrange the order. The merged PDF will follow the order you set.

How It Works

Features

Supported Formats

FAQ

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