# Flatten PDF for researchers

_Updated July 2026 · Arthize · https://arthize.com/for/researchers/flatten-pdf_

Arthize lets researchers and academics flatten a PDF in a private workspace — free, with no watermark. Flattening a PDF merges form fields, annotations and layers into the page, so nobody can change filled-in values and the file renders everywhere.

## Why researchers flatten a PDF

A researcher merges a paper with its appendices, extracts a results table into Excel for re-analysis, and compresses the figure-heavy submission under a journal's upload limit — privately.

**Built for papers.** Whether it's papers, datasets, appendices, Arthize's flatten pdf keeps the work inside your private workspace. Unpublished work and grant applications are confidential; a private workspace keeps them out of public tools.

## What matters when you flatten a PDF

Flattening bakes form fields and annotations into the page so they can't be changed.

It fixes forms that display differently in different viewers.

A flattened PDF is the safe way to share a completed form.

## How to flatten a PDF

1. **Open the flatten tool** — Sign in and open the Flatten tool.
2. **Add your PDF** — Upload a form or annotated document.
3. **Flatten** — Arthize bakes fields and annotations into the page content.
4. **Download** — Get a flattened, tamper-resistant PDF.

## FAQ

### How do researchers flatten a PDF for free?

Flattening a PDF merges form fields, annotations and layers into the page, so nobody can change filled-in values and the file renders everywhere. On Arthize it's free with no watermark, and the file is deleted after the job — which is why researchers and academics can use it for papers without a confidentiality risk.

### Is it private to flatten a PDF sensitive papers?

Yes. Unpublished work and grant applications are confidential; a private workspace keeps them out of public tools. Files are processed inside your private Arthize workspace and deleted after the job.

### How do I flatten a PDF form?

Flattening a PDF merges form fields, annotations and layers into the page, so nobody can change filled-in values and the file renders everywhere. On Arthize it's free with no watermark and processed privately.

### Why do my filled form fields disappear in some viewers?

Flattening a PDF merges form fields, annotations and layers into the page, so nobody can change filled-in values and the file renders everywhere. On Arthize it's free with no watermark and processed privately.