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Handbook of Sustainable Design of Digital Services

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Ux/Ui    ODD#12     ODD#13    

Are the number of fonts and the variants of fonts called (weight, characters used in the project) limited ?

Recommendation  Essential

UI

B People

A Planet

B Prosperity

Difficulty

*

Priority

High

Récurrence

OnUpdate

Tests

Can a system typo be used?

Precisions

Fonts can be very large. By reducing the number of policies only to those used in the service, the volume exchanged decreases.

Use Case

Browser tools/consoles allow to check compliance w/ best practices (FIREFOX: console / alerts)

Additional elements

Operational issues related to the project

Posts

Rule for assessing the level of compliance of the criterion

Moins de 3 polices = 100 ; 3-5 polices = 50 ; Plus de 5 = 0 / 100

Life cycle

Conception

6 other criteria related to the recommendation: Media engineering: reducing the digital service media as much as possible (images, animations, content, etc.)

Recommendation Essential

UI

Is a media management / use policy in place to reduce their impact, with criteria for media compression and formats ?

Recommendation

Technology

Can the functionality be offered without calling external scripts or libraries (JS, AJAX, ...) ?

Advice

Technology

Does the target functionality require calling an iFrame ?

Recommendation

UI

Can the native system features and components match as needed ?

Recommendation

UI

Are videos and animations only used when they add value to the user ?

Recommendation

UI

Are the images optimized for their functions ?