sitespeedio / sitespeedio/browsertime

Collect screenshots for visual elements

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enhancement
Dominant language
JavaScript
Stars
652
Forks
141
Avg merge
3h 56m
Merged PRs (30d)
5

Description

Today you get screenshots for the element that Chromium picks up as Largest Contentful Paint. We should also support getting screenshots (configurable) when you use the --visualElements config. That way you can see that you are measuring the correct element.

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.

Research direction

Start by locating the screenshot collection and the --visualElements configuration entry point in the Browsertime codebase. Trace how Chromium's Largest Contentful Paint screenshot is captured, then determine where configurable visual-element screenshots should be added. Done means using --visualElements can produce screenshots of the measured element so its selection can be verified.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
performance
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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