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Clari-Fi

Clari-Fi uses blurring to simulate the challenges of viewing small details on packs and display screens

 

Photoshop assessment tool

The Clari-Fi Photoshop plug-in enables you to perform a quick visual clarity check on printed materials and packs. In order to install this plug-in, you will need to have both Adobe Creative Cloud and Photoshop Creative Cloud (v24.7.4 or newer). The plug-in works on both Mac and Windows.

The Clari-Fi plug-in will initially run in a ‘free demo’ mode, which will add watermarks to the images. These watermarks can be removed by entering a licence key; see the section below on obtaining a licence for more detail.

The current version of the Clari-Fi Photoshop plug-in is v1.3. See version history.

PowerPoint and online versions for assessing printed materials are not currently available, please contact edc-toolkit@eng.cam.ac.uk if you would like these versions to be developed.

On this page:

How to install the Photoshop plug-in

The plug-in is downloaded as a zip file, using the link below.

Download Clari-Fi v1.3 and APCA v1.0 Photoshop plug-ins (for Mac and Windows)

Downloading this zip file indicates acceptance of the following: You shall not modify, adapt, reverse engineer, translate or otherwise attempt to discover the source code of this plug-in, or permit any of these things to happen.

To install plug-in:

  • Extract the zip file that you just downloaded.
  • Double click on the .ccx file to begin the automatic loading process. Note that Adobe Creative Cloud must already be installed for this to work.
  • A pop-up box will notify you that the plug-in cannot be verified. Don’t worry — this is expected. On Windows, the pop-up box looks like this:
  • Click the ‘Install locally’ button to continue the process.
  • Another pop-up box will notify you about the access permissions that the plug-in is requesting. On Windows, it looks like this:
  • Permissions to ‘Read and write files’ and ‘Access any devices’ are necessary for loading image files and managing licence keys. The permission to make network requests enables the plug-in to include hyperlinks to websites in its instructions.
  • Click ‘OK’ to continue. You may be asked to enter an administrator password. After that, you should get a pop-up that looks like this:

The plug-in can now be accessed from the plug-ins menu in Photoshop, and is also visible in the plug-ins tab in Adobe Creative Cloud.

How to assess printed materials

If you haven’t done so already, please first read the Introduction to assessing printed materials.

The number of pixels that are needed for an accurate simulation depends on the physical width of the asset, and its intended viewing distance. This plug-in will notify you if your image does not have enough pixels.

When you click on the button to ‘Apply Blurs’, blurred versions of the image will be created within a new tab, and you can save this as a new file if you want to. The image that you start with does not get modified.

By default, the level of blurring that is applied corresponds to a handheld viewing distance. The drop-down menu can be used to set alternative viewing distances.

Use the input box underneath this drop-down menu to specify the physical width of the asset once it has been printed, in centimetres (cm).

Once the blurred versions of the images have been created, you can now follow the instructions for How to perform a Clari-Fi assessment (within the Introduction to assessing printed materials).

Once the assessment has been completed, you can find out the implications in population terms from the section titled Taking a population perspective (also within the Introduction to assessing printed materials).

Assessing contrast

This zip file that includes the Clari-Fi plug-in also includes a separate free plug-in for measuring the contrast difference between foreground and background, using the Accessible Perceptual Contrast Algorithm (APCA). You can find out more about the APCA on Myndex Research’s APCA page.

Once the free APCA plug-in is installed, APCA contrast can be assessed directly within photo shop through an additional tab, which can be docked within the photoshop interface, just like all the other photoshop tabs, as shown opposite.

 

Obtaining a licence

Clari-Fi Pro will initially run in a ‘free demo’ mode, which will add watermarks to the images. These watermarks can be removed by entering a licence key.

Prices for individual Clari-Fi Pro licences (+VAT):

  • £163 for a single named user, for 12 months
  • £263 for a single named user, in perpetuity
  • £1000 for 10 named users, for 12 months

Prices for 12 month Clari-Fi Pro site licenses (+VAT):

  • £1,250 for an organisation with less than 50 employees
  • £3,750 for an organisation with 50-250 employees
  • £6,250 for an organisation with 250-10,000 employees
  • £12,500 for an organisation with greater than 10,000 employees

Single user licenses can be purchased from our online store.

For all other licences, please contact:
software@enterprise.cam.ac.uk

Each of the above prices covers one assessment function (i.e. e-commerce images, apps & websites, or printed materials).

The Photoshop, PowerPoint and online versions of Clari-Fi Pro all use the same licence key.

Preview licence terms

Version history

The current version of the Clari-Fi Photoshop plug-in is v1.3.

  • v1.3 was released in June 2022. Functionality was added to assess printed materials, apps and websites. These new use cases have a different set of check levels, which are named according to the percentage of people who cannot see particular visual details, if those visual details are 'only just' perceptible at that check level.
  • v1.2 was released in May 2023. The functionality to assess display ads was improved, such that display ads could be assessed for any pixel size. Also, a bug was fixed that previously caused the background of the simulated image to be a colour other than white.
  • v1.1 was released in January 2023. The functionality to assess display ads was added.
  • v1.0 was launched in December 2022.

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