Ecodesign Analyze

Audit a web application's eco-design practices based on a curated subset of the GreenIT "115 bonnes pratiques" (v4/v5), filtered for relevance in 2026.

How to Conduct the Audit

1. Explore the Codebase

Before auditing, understand the project:

•Identify the tech stack (framework, build tools, CSS methodology, backend language)
•Locate entry points: HTML templates, main JS/CSS bundles, API routes
•Check for a build pipeline (bundler config, minification, compression)
•Identify static assets: images, fonts, videos, documents

2. Load the Checklist

Read references/checklist.md in this skill's directory for the full list of practices to check.

3. Analyze Each Category

For each category in the checklist, search the codebase for relevant patterns. Use Grep, Glob, and Read tools to find:

•Unused dependencies or bloated imports
•Unoptimized images (large files, wrong formats)
•Missing lazy loading on images/iframes/videos
•Inline CSS/JS that should be externalized
•Autoplay on media elements
•Third-party scripts (analytics, social widgets, trackers)
•Missing cache headers or CDN setup
•Oversized API responses or redundant API calls
•Database queries that could be optimized (N+1, missing indexes)

4. Generate the Report

Produce a structured report with these sections:

code

## Audit Eco-design - [Project Name]

### Score global
X / Y pratiques conformes (Z%)

### Resume
[2-3 sentences summarizing the main findings]

### Resultats par categorie

#### [Category Name]
| # | Pratique | Statut | Commentaire |
|---|----------|--------|-------------|
| 1 | ...      | OK/KO/NA | ...       |

### Top priorites
[List the 5-10 most impactful improvements, ordered by effort/impact ratio]

### Recommandations detaillees
[For each KO finding, explain what to fix and how]

Status values:

•OK - Practice is followed
•KO - Practice is not followed (include recommendation)
•NA - Not applicable to this project
•PARTIAL - Partially followed (explain what's missing)

5. Prioritization

When listing recommendations, prioritize by:

•Quick wins - Low effort, high impact (missing lazy loading, unoptimized images)
•High impact - More effort but significant gains (removing unused deps, static pages)
•Progressive - Long-term improvements (architecture, caching strategy)

6. Export the Review Report

Once the audit is complete, save the full analysis as a Markdown document at the root of the audited codebase:

code

/docs/YYMMDD_ecodesign-review.md

Where YYMMDD is the current date (e.g., 260206 for February 6, 2026). Create the /docs/ directory if it does not exist.

The document must include:

•The complete audit report (as generated in step 4)
•
An action plan section at the end, listing all tasks derived from the findings:
- •Grouped by priority (Quick wins, High impact, Progressive)
- •Each task broken down into sub-tasks of 2 to 4 hours (assuming AI-assisted development)
- •Time estimate for each sub-task
- •Total estimated time per priority level

code

### Plan d'action

#### Quick wins
- [ ] [Tache] — ~Xh (avec IA)
  - [ ] [Sous-tache 1] — ~2h
  - [ ] [Sous-tache 2] — ~3h

#### Impact eleve
...

#### Progressif
...

**Total estime : ~Xh**

Important Notes

•Do NOT check for practices that are handled by default in modern tooling (HTTP/2, HSTS, etc.)
•Focus on what the developer can actually change in their code
•Adapt the analysis to the project's tech stack - a static site has different concerns than a SPA
•When unsure if a practice applies, mark as NA with explanation
•Be specific in recommendations: point to exact files and lines