REVIFF by AEC DX Labs

Stop hunting for what changed in your drawings.

A 100% local PDF comparison tool for architectural drawing sets. No cloud upload, no signup, no subscription.

Download FreeNo signup. No subscription.View v1 changelog

Version 1.0.0.0 · Windows desktop · PDF + images · Local processing

Split mode supports side-by-side checks, and Diff mode highlights added content in red and removed content in blue.

Workflow

Three connected steps for practical drawing review

The flow keeps review moving: import, compare, and decide - without switching between tools.

1. Load & Align (Page Review)

Drop in your Before and After PDF sets and arrange the pages to match. Built-in similarity scoring helps you catch sheet mismatches or scale issues before review begins.

2. Compare & Cloud (Diff Mode)

Spot differences instantly using Split or Diff viewing modes with synchronized zoom and pan. REVIFF detects changed regions and generates Cloud Marks around them.

3. Export the Deliverable (Export)

Select changed pages and export the result to PDF or PNG. The output is ready to share with teammates and reviewers.

Quick Answers

Short answers to the questions people ask first.

0 cloud uploads

Data handling

Drawing comparison stays on the local Windows machine.

Free

Pricing

No signup, no subscription, no premium feature locked, no watermark.

Store install

Windows path

Microsoft Store is the install and update path.

Is REVIFF free?

Yes. REVIFF is free. No signup, no subscription, no premium feature locked, and no watermark.

Does REVIFF upload drawings?

No. The comparison workflow runs locally on your Windows PC.

What file types can it compare?

REVIFF supports PDF and common image formats including PNG, JPG, JPEG, BMP, GIF, TIF, and TIFF.

Maker Context

The Weekend DX Experiment

Drawing No.AEC-DX-001

REVIFF is built around a familiar AEC review problem: revised drawing sets still get checked manually, page by page, under time pressure.

The product stays intentionally focused. It does not try to replace document management; it helps teams see what changed, align what moved, and prepare review output.

REVIFF is free on Microsoft Store, keeps comparison local, and gives drawing-review teams a direct path to send practical feedback.

FAQ

Trust and FAQ

Core trust signals stay visible alongside the questions people ask first.

Common Questions