Free Online Merge PDFs
Combine two or more PDF files into a single document right in your browser. Unlike most online tools, your PDFs are never uploaded to a server: merging happens locally using the pdf-lib library, so sensitive documents (contracts, invoices, records) never leave your computer. You can reorder the files before merging them.
💡 Advantages of using Merge PDFs
- • Your PDFs are processed in your browser: never uploaded to a server
- • Merge as many files as you need, with no artificial limit
- • Reorder documents (move up/down) before combining them
- • No watermark, no page limit
- • Download the result instantly, no processing queue to wait for
📄 Merge PDFs
Combine multiple PDF files into a single document
📄 Merge PDFs
Combine multiple PDF files into a single document
Drag PDF files here
Or click to select files
💡 Cómo usar:
- • Select or drag multiple PDF files
- • Order files using the arrows ⬆️⬇️
- • Click "Merge PDFs" to combine all documents
- • The final file will download automatically
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⚡ Cómo usar en 3 pasos
- 1
Upload your PDFs
Drag and drop or select the PDF files you want to combine.
- 2
Put them in order
Use the arrows to move each file up or down until you have the final order you want.
- 3
Merge and download
Click merge and download the resulting PDF instantly.
Frequently Asked Questions about Merge PDFs
Is it safe to merge PDFs with confidential information?▼
Yes. The file is never uploaded to a server — merging happens entirely in your browser using JavaScript. That's a key difference from tools that process your documents in the cloud.
Is there a limit on files or size?▼
There's no artificial limit on the number of files. The real limit depends on your device and browser memory — very large PDFs or many files at once may take longer to process.
Can I change the order of the PDFs before merging?▼
Yes, every file you upload has buttons to move it up or down in the list before generating the merged PDF.
Do I lose quality or formatting when merging?▼
No. The tool combines the original pages as-is, without recompressing or converting to images, so text stays selectable and quality doesn't change.
Is Merge PDFs free?▼
Yes, Merge PDFs from WebTools is 100% free. No registration or subscription required. You can use it as many times as you need at no cost.
Is it safe to use Merge PDFs online?▼
Yes, all information is processed directly in your browser. We do not store or send your data to any external server.
Does Merge PDFs work on mobile?▼
Yes, the tool is fully responsive and works on any device: phone, tablet or computer with a modern browser.