OpenRailAssociation/osrd-website

Compress carousel images on the frontpage

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#346 opened on Aug 11, 2026

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good first issuekind:enhancementseverity:major

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Description

The images on the front page weight 8.16MB out of 8.85MB for the whole page (with HTML, CSS and JS).

To measure, go to dev tools, disable cache (top right checkbox in firefox) and reload the page. The numbers are on the bottom left on firefox.

To reproduce, set connection speed to "Regular 4G", disable cache, refresh and see how the page takes seconds to fully render

Contributor guide

Research direction
Identify the carousel images in the frontpage HTML, then use an image compression tool (e.g., imagemin, Squoosh, or manual conversion) to reduce their file size while maintaining acceptable quality. Verify the page load size after compression.
Tech stack
html
Domain
frontendperformance
Issue type
Performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Git
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80