skip to primary navigation skip to content


Clari-Fi uses blurring to simulate the challenges of viewing small icons, images and text on mobile screens


Clari-Fi helps to evaluate the visual clarity (i.e. perceptibility) of icons, images and text that are intended to be viewed on a mobile device. Clari-Fi speeds up the process of designing these graphical features, because it enables the visual clarity of these features to be evaluated on a large screen device, and uses blurring to simulate the challenges of viewing these features on a mobile device.

Before any new or updated e-commerce images are sent to retailers, Unilever now requires that these images must pass the ‘Clari-Fi’ visual clarity test. This takes less than a minute, and we have used Clari-Fi to test at least 20 thousand Unilever product images.  ”

- Unilever global e-commerce director
Sept. 2020

The level of blurring that's applied by Clari-Fi is calibrated to survey data that was gathered using a handheld test card, so the design team can be confident that if their graphical features appear 'easy to see' in the blurred version of the image, then the vast majority of their users will find these features 'easy to see' on their mobile devices*.

This tool is available separately for mobile screenshots and e-commerce images. A PowerPoint version of this tool is also available to download.

* Clari-Fi considers people who might have difficulty perceiving graphical features because of visual acuity issues. Some people may have difficulty perceiving graphical details for other reasons, especially colourblindness.



We would welcome your feedback on this page:

Your name:

Your email:

I would like to receive the Inclusive Design Toolkit news bulletin. This bulletin showcases people’s achievements with inclusive design tools, and highlights new tools. It comes out once or twice a year.

I would be interested in contributing to the Inclusive Design Toolkit news bulletin.

I would like a FREE activation code for the Inclusive Design Toolkit's impairment simulator software.

Your comments:

Please leave this field blank (it's a spam trap):

Privacy policy. If your feedback comments warrant follow-up communication, we will send you an email using the details you have provided. Feedback comments are anonymized and then stored on our file server. If you select the option to receive or contribute to the news bulletin, we will store your name and email address on our file server for the purposes of managing your subscription. You can unsubscribe and have your details deleted at any time, by using our Unsubscribe form. If you select the option to receive an activation code, we will store your name and email address on our fileserver indefinitely. This information will only be used to contact you for the specific purpose that you have indicated; it will not be shared. We use this personal information with your consent, which you can withdraw at any time.

Read more about how we use your personal data. Any e-mails that are sent or received are stored on our mail server for up to 24 months.

Prices for Clari-Fi Pro licences

Prices for individual licences

  • £250 for a single named user, in perpetuity.
  • £1000 for 10 named users, for 12 months

Prices for 12 month site licenses

  • £1,000 for an organisation with less than 50 employees
  • £3,000 for an organisation with 50-250 employees
  • £5,000 for an organisation with 250-10,000 employees
  • £10,000 for an organisation with greater than 10,000 employees

All prices are + VAT.

Each of the above licences covers one assessment function (i.e. mobile screenshots OR e-laptop images). The same licence key will work for both the online and PowerPoint versions of Clari-Fi Pro.

If you would like to purchase a licence, please contact: