2.26 Incorporate Performance Testing Into Each Major Release-Cycle

Try to ethically measure how efficient a visitor’s experience is by analyzing the performance of the website or application and how it has been constructed, by doing so you might be able to reduce any issues they may have encountered previously, decrease loading times, and reduce the burden of loading unnecessary pages.

Criteria

Performance Testing: The performance of a website or application, to identify and resolve bottlenecks or issues in the underlying code or infrastructure which could ultimately impact the sustainability of a website or application, are regularly measured with each release-cycle (using tooling or through research and auditing).
Measurement And Compliance: Only data required to provide a streamlined and effective user-journey, put policies in place to ensure strict adherence, and comply with relevant accessibility policies and privacy laws, such as the General Data Protection Regulation (GDPR) are collected.

Impact

Medium

Effort

Low

Benefits

Environmental:
Alongside the device longevity which inherently comes with having a performant product or service, it can also help you meet the societal impacts of PPP targets.
Performance:
Faster pages that load less data improve performance, as there will be less for rendering engines within browsers to process. Additionally, as the pages are smaller, they will reach the visitor quicker based on their connection speed.
Economic:
Less data stored and transferred also reduces costs for those hosting content and those who own websites and applications.
Conversion:
Page load speed can measurably improve conversion rates, as visitors will be less likely to abandon a product or service if the content appears instantaneously.

GRI

materials: Medium
energy: Medium
water: Medium
emissions: Medium

Example

Code:

<link rel="prefetch" href="/articles/" as="document">

Prefetch resources to speed up future navigations.

Resources

View the Guideline