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PDF Merger

Merge multiple PDF files into one — drag and drop to reorder pages, then download a single combined PDF. 100% browser-based.

Click to upload or drag and drop PDF files

Select multiple PDFs at once

How it works

Upload two or more PDF files by clicking or dragging them in.
Drag and drop files in the list to arrange the order you want.
Click "Merge" to combine all PDFs into a single file.
The merged PDF downloads automatically to your device.

About PDF Merger

Free online PDF merger that combines multiple PDF files into a single document. Upload your PDFs by clicking or dragging them in, then reorder them by dragging and dropping in the file list. Each file shows its page count and size so you know exactly what you're merging. Click merge and download the combined PDF instantly. All processing happens in your browser using pdf-lib — your files are never uploaded to any server, making this tool completely private and secure. Perfect for combining reports, invoices, contracts, scanned documents, or any PDFs you need in one file. No signup, no watermarks, no file size limits.

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Frequently Asked Questions

How do I merge PDF files?▾

Upload two or more PDF files by clicking the upload area or dragging files in. Arrange them in the order you want by dragging and dropping in the list. Then click the Merge button to combine them into a single PDF that downloads automatically.

Can I reorder the PDFs before merging?▾

Yes. After uploading, drag and drop files in the list to rearrange them in any order. You can also use the up/down arrow buttons. The final merged PDF will follow the order shown in the list.

Is there a file size or page limit?▾

There is no hard limit. Since all processing happens in your browser, the practical limit depends on your device's memory. Most devices can handle merging dozens of PDFs with hundreds of pages without issues.

Are my files uploaded to a server?▾

No. All merging happens entirely in your browser using JavaScript (pdf-lib). Your PDF files never leave your device. This makes the tool completely private — safe for confidential documents, contracts, and sensitive files.

Will the merged PDF have watermarks?▾

No. The merged PDF is a clean combination of your original files with no watermarks, no branding, and no modifications to the content. The output is exactly your pages combined in order.

Is this tool free?▾

Yes, completely free with no signup required. No watermarks, no limits, no hidden fees.

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