Free · Browser-based

Merge PDF Files Online

Combine multiple PDF files into one document. Add files, arrange them in the order you want, remove anything you don't need, then download your merged PDF. Your selected files stay in your browser.

1. Add and arrange PDFs

Add at least two PDF files, then drag the cards to set the final order. Cards slide into place as you move them.

Drop PDF files here

or choose files from your device

Output file name (optional)

Enter a name without the extension or include .pdf. Leave blank to use the default name.

Merge PDF files without uploading them

A PDF merger combines the pages from multiple PDF documents into a single file. It is useful when assembling invoices, reports, application documents, scanned pages, class notes or project records into one document.

What happens to my files?

The tool reads your selected files in the browser and builds the merged PDF on your device. The PDF contents are not sent to ToolVault's server. For sensitive documents, use a trusted device and avoid downloading files onto a shared computer.

Tips for a reliable merge

Check the file order before merging; the list order becomes the document order.
Make sure each file opens normally in a PDF reader before using it here.
Password-protected, damaged or unusually structured PDFs may fail to process. Remove protection only when you are authorized to do so.
Merging combines pages; it does not edit existing text, remove passwords or perform OCR on scanned pages.

How PDF merging works

Merged PDF = pages from file 1 + pages from file 2 + … in the order shown above

Frequently asked questions

Is this PDF merger free?
Yes. There is no account or payment required to use this page.

Are my PDFs uploaded?
No. The merge runs in your browser. The page loads its PDF-processing library from a third-party CDN, but the selected document files are not uploaded by this tool.

Can I change the order of pages?
You can change the order of files before merging. To rearrange individual pages within a file, a dedicated page-organizing tool is needed.

Can I merge scanned PDFs?
Usually, if they are valid PDFs. This tool preserves their pages; it does not recognize or convert scanned text.

Why did a PDF fail?
The file may be damaged, encrypted, unsupported, or too large for available browser memory. Try opening it in a PDF reader first or process fewer files at a time.