# Merge PDF: Arthize vs pdfFiller

_Updated July 2026 · Arthize · https://arthize.com/vs/pdffiller/merge-pdf_

To merge PDF files, Arthize offers a free, private merge pdf with no watermark — a focused alternative to pdfFiller. Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp.

## Arthize's merge pdf vs pdfFiller

pdfFiller is an online form-filling and editing service. pdfFiller specialises in online form completion and e-signature on a subscription model.

**Arthize's approach:** Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp.

- Transparent pricing: free forever, Pro from $6/mo or $48/yr, and a one-time $149 lifetime option.
- Files are processed inside your private Arthize workspace and deleted after the job — never sold or used to train models.
- 50+ tools live in one workspace, so you don't jump between single-purpose pages.
- Core tools without a mandatory subscription.

## How to merge PDF files with Arthize

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 with Arthize

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

### Is Arthize a good pdfFiller alternative to merge PDF files?

Yes. Merging PDFs combines several documents — and any JPG or PNG pages — into one file losslessly, so text stays selectable and images stay sharp. Arthize does it free with no watermark and deletes the file after the job. pdfFiller is purpose-built and effective for heavy form-filling workflows.

### 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.