# How do I merge PDF files?

_Updated July 2026 · Arthize · https://arthize.com/answers/how-to-merge-pdf_

Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp. In Arthize you open the merge tool, then add your files, then put them in order, then merge and download, and download the result — free, with no watermark.

## Answer

Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp. In Arthize you open the merge tool, then add your files, then put them in order, then merge and download, and download the result — free, with no watermark.

## More about merge pdf

A proper merge is lossless because it copies existing page objects instead of re-rendering them.

You can reorder individual pages, not just whole files, before merging.

Merging never adds a watermark, even on the free plan.

## How to merge PDF files

1. **Open the merge tool** — Sign in and open the Merge tool in your Arthize workspace.
2. **Add your files** — Add every PDF to combine; you can mix in JPG or PNG images, which become pages too.
3. **Put them in order** — Drag the files or individual pages into the exact order you want in the final document.
4. **Merge and download** — Click merge — Arthize rebuilds the page index into one PDF, then deletes the sources.

## FAQ

### How do I merge PDF files into one for free?

Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp. On Arthize it's free with no watermark and processed privately.

### Will merging reduce the quality of my PDFs?

Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp. On Arthize it's free with no watermark and processed privately.

### Can I merge images and PDFs together?

Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp. On Arthize it's free with no watermark and processed privately.