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JavaScript Ads & clutter trello.com

Trello: dim empty lists

Automatically fades lists with no cards so attention stays on columns that have tasks.

Code to copy

// Visually shrink lists that currently contain no cards
function shrinkEmptyLists() {
  document.querySelectorAll('[data-testid="list"], .js-list-content').forEach(function (list) {
    const cards = list.querySelectorAll('[data-testid="trello-card"], .list-card');
    list.style.opacity = cards.length === 0 ? '0.4' : '';
    list.style.filter = cards.length === 0 ? 'grayscale(0.5)' : '';
  });
}
shrinkEmptyLists();
const obs = new MutationObserver(shrinkEmptyLists);
obs.observe(document.body, { childList: true, subtree: true });

How to use this example

  1. Copy the code with the button above.
  2. Install JustZix (2 minutes) and open the extension on the target page.
  3. Add a new rule matching that page.
  4. Paste the code into the rule's JavaScript panel and save — it runs on every page visit.

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