Learn how to prototype web and mobile apps

Simulate and export your prototypes

Simulate, export and share your prototypes easily with Justinmind. In this tutorial we will explore how you can do this.

We believe a prototype is the best communication tool between customers/users and the software development team. If you have an app prototype at the start of a project and it is as close as possible to the layout of the final app, the users can be involved from the beginning, giving their opinion and validating it. The more key people get involved, the more successful the project will be as a whole, reducing the number of adjustments on the actual application.

You can find below the many different ways to simulate a prototypes, export it, and share it with users and clients.

  • Click the Simulate button or F5 to visualize a prototype simulation together with the users. To enter the full screen mode click on F11.  This comes in handy when you want to make changes on the spot and validate them immediately, at the presence of the client or user.

Simulate your prototype on the actual device

You can also remove the device’s frame from view in the Simulation window to visualize the standalone design.

  • Export it to HTML. You will find the option in the File menu. Once exported, it’s possible to open the prototype in any Internet browser and distribute it to an unlimited number of key users, who will be able to execute and test it. However, please consider that many users have anti-spam filters installed that block e-mails with attached HTML code.

Export your prototype to HTML

  • Export it to images. If you want to show a static design of your future application, you can save your screens as simple images, by clicking on the File menu option “Save as Images”.

Save your prototype as an image

  • Export to document: You can export all the information of the prototype in a specification document in order to integrate it into the different documentation processes of an organization or, simply, to have a document that can be signed.

Export your prototype to specification document

  • Publish it on the cloud. Justinmind lets you publish your prototype so that all authorized users can experience it on their browsers, as if it were the final app. They can collaborate by testing, reviewing and adding comments straight on the prototype. All their comments are registered and centralized so that no details are lost. You can also set up extensive user testing as Justinmind integrates most user testing tools to carry extensive user tests remotely or in person. To share your prototype, you can click on the “Share” button in Justinmin editor, or you can upload it directly from your online account. Learn more in the Online Account tutorial section.

Share your prototypes from Justinmind editor

Upload a prototype to your online account


Next tutorial > Export your wireframes to image files


  1. Diego

    October 13, 2014 at 7:21 pm

    can I export a prototype as a short movie or gif?

    • admin

      October 14, 2014 at 9:27 am

      No, but you could easily do a screen capture while you simulate the prototype with softwares like QuickTime or Camtasia.

  2. Jordick Says :

    April 2, 2015 at 5:23 pm

    This functions ara available on macos?

    • Lidia Rodriguez

      April 7, 2015 at 8:25 am

      Yes they are!

  3. Wesley

    August 28, 2015 at 9:46 pm

    Hey – is there a way to save the HTML file locally to your computer? Or is there a workaround for this when you have a bad WiFi connection??

    • Danielle Schneider

      August 29, 2015 at 4:10 am

      Hi Wesley,

      Yes – you can export your prototype to HTML and then you can view your simulated prototype without an internet connection. To do this, go to the main menu bar -> file -> export to HTML