# Annotate PDF for architects

_Updated July 2026 · Arthize · https://arthize.com/for/architects/annotate-pdf_

Arthize lets architecture teams annotate a PDF in a private workspace — free, with no watermark. Annotating a PDF adds highlights, comments, shapes and notes on top of the page, so you can mark up a document without changing its text.

## Why architects annotate a PDF

An architect merges plan sheets and schedules into one issue set, compares two drawing revisions for changes, and exports key sheets to images for a client presentation.

**Built for plan sets.** Whether it's plan sets, schedules, specifications, Arthize's annotate pdf keeps the work inside your private workspace. Designs and client plans are proprietary; private processing protects the practice's work.

## What matters when you annotate a PDF

Annotations sit on top of the page and don't change the underlying text.

You can highlight, comment, draw and add notes.

Annotated files are ideal for review and feedback.

## How to annotate a PDF

1. **Open the editor** — Sign in and open the PDF editor.
2. **Add your PDF** — Upload the document to mark up.
3. **Add annotations** — Highlight text, add comments, draw shapes or leave notes.
4. **Download** — Save the annotated PDF.

## FAQ

### How do architects annotate a PDF for free?

Annotating a PDF adds highlights, comments, shapes and notes on top of the page, so you can mark up a document without changing its text. On Arthize it's free with no watermark, and the file is deleted after the job — which is why architecture teams can use it for plan sets without a confidentiality risk.

### Is it private to annotate a PDF sensitive plan sets?

Yes. Designs and client plans are proprietary; private processing protects the practice's work. Files are processed inside your private Arthize workspace and deleted after the job.

### How do I annotate a PDF?

Annotating a PDF adds highlights, comments, shapes and notes on top of the page, so you can mark up a document without changing its text. On Arthize it's free with no watermark and processed privately.

### Can I highlight and comment on a PDF?

Annotating a PDF adds highlights, comments, shapes and notes on top of the page, so you can mark up a document without changing its text. On Arthize it's free with no watermark and processed privately.