WordPress / WordPress/performance

Collect and measure impact of image sizes improvements

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#1,186 11 comments 2 reactions 1 assignee View on GitHub

@joemcgill is already working on this.

Since Apr 29, 2024.

[Plugin] Enhanced Responsive Images
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PHP
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Description

Purpose

As part of #760, we should define some initial baseline metrics against which we can evaluate the impact of the project and decide how to report them over time.

To start, we have created an initial query of HTTPArchive data that shows the distribution of the sizes error and the the effect on wasted pixels per image caused by selecting the wrong source.

Additional tasks

  • Create a Colab to collect metrics for image sizes improvements.
  • Modify the original HTTPArchive query, to limit it to only images that are the LCP image.
  • Correlate percentage of sites with LCP passing rates with sites with an LCP image with an incorrect sizes attribute resulting in wasted pixels.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Assessment

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