Free OmniGraffle (.graffle) Viewer by Lucidchart

The Free OmniGraffle (.graffle) Viewer allows Firefox users to open OmniGraffle files on their computer, attached to their email, or posted on a website. No subscription required!

★ Supported file types: .graffle, .graffle.zip

★ Supported versions: OmniGraffle 6, OmniGraffle Pro 6

IMPORTANT TIP: When attempting to view a package file, zip it up before uploading.

Once you’ve installed the extension, you can:

Open OmniGraffle files from your computer

★ Click the Lucidchart icon on your toolbar and select “Choose file”. Alternatively, you can drag and drop an OmniGraffle file onto the page.


As a cloud-based tool, Lucidchart is the ideal OmniGraffle alternative on any platform. With support for both OmniGraffle and Visio files, it’s bridging the gap between Mac and PC. Now you can create dynamic, professional diagrams in minutes.