# Compare PDF for engineers

_Updated July 2026 · Arthize · https://arthize.com/for/engineers/compare-pdf_

Arthize lets engineering teams compare two PDFs in a private workspace — free, with no watermark. Comparing two PDFs highlights what changed between versions — added, removed and edited text — so you can review revisions at a glance.

## Why engineers compare two PDFs

An engineer merges drawings and specs into one submittal, compares two revisions to catch changes, and archives the final set as PDF/A so it stays readable for the project's lifetime.

**Built for drawings.** Whether it's drawings, specifications, reports, Arthize's compare pdf keeps the work inside your private workspace. Project documents can be commercially sensitive; a private workspace protects designs and client data.

## What matters when you compare two PDFs

Comparison highlights text differences between two versions of a document.

It is the fast way to review contract or draft revisions.

Both files are processed privately and deleted after the job.

## How to compare two PDFs

1. **Open the compare tool** — Sign in and open the Compare tool.
2. **Add both PDFs** — Upload the original and the revised version.
3. **Compare** — Arthize highlights the differences between them.
4. **Review** — Scan the highlighted changes side by side.

## FAQ

### How do engineers compare two PDFs for free?

Comparing two PDFs highlights what changed between versions — added, removed and edited text — so you can review revisions at a glance. On Arthize it's free with no watermark, and the file is deleted after the job — which is why engineering teams can use it for drawings without a confidentiality risk.

### Is it private to compare two PDFs sensitive drawings?

Yes. Project documents can be commercially sensitive; a private workspace protects designs and client data. Files are processed inside your private Arthize workspace and deleted after the job.

### How do I compare two versions of a PDF?

Comparing two PDFs highlights what changed between versions — added, removed and edited text — so you can review revisions at a glance. On Arthize it's free with no watermark and processed privately.

### Can I see what text changed between two PDFs?

Comparing two PDFs highlights what changed between versions — added, removed and edited text — so you can review revisions at a glance. On Arthize it's free with no watermark and processed privately.