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Handbook of Sustainable Design of Digital Services

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Ux/Ui    ODD#12     ODD#13    

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

Recommendation 

Technology

B People

A Planet

B Prosperity

Difficulty

**

Priority

High

Récurrence

OnUpdate

Tests

How many functions are managed via external libraries?

Precisions

The user peripherals have processing resources, the use of these resources consumes energy and requires the executable codes to be send to the user peripheral. By reducing the use of scripts that run on the user station both aspects are reduced. Futerhmore, some users may not be able to use scripts.

Use Case

Source code is checked to track external libraries calls

Additional elements

Operational issues related to the project

Posts

Rule for assessing the level of compliance of the criterion

Fonctionnalités analysées / Fonctionnalités candidates

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 Essential

UI

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

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 ?