Dark mode for Slack during migraine flares

Updated 2026-11-02

Quick answerSlack lets you choose Dark colour mode and disable automatic animations. Do that on each device, then add a browser filter only if custom workspace themes remain harsh. Not a medical intervention. Keep expectations modest. Adjust intensity to taste. Stop if symptoms worsen.

Slack preferences

  1. Profile → Preferences → Appearance → Dark.
  2. Accessibility → uncheck Automatically play animations.

Overlay

  1. Optional Migraine Mode on slack.com tabs.

Good to know

  • Dark mode is device specific (Slack Help).
  • Native guide: /migraine-friendly/slack/.

Slack triggers

  • Animated custom emoji.
  • Bright sidebar themes.
  • GIF unfurl previews.

FAQ

Does desktop dark mode apply to mobile?

No. Slack says the preference is device specific.

Can I stop GIFs only?

Use the accessibility animation switch; Migraine Mode can also freeze GIFs on the web app.

Sources

  • Slack Help: Use dark mode in Slack. Link
  • Slack Help: Manage animated images and emoji. Link
  • W3C. Understanding WCAG 2.2 Success Criterion 2.3.3: Animation from Interactions. Link

Not a medical device and not medical advice. Migraine Mode is a screen-comfort tool: it does not diagnose, treat, cure or prevent migraine or any other condition, and it does not replace a doctor. Its settings are based on studies of light, colour, flicker, patterns and motion; the extension itself has not been clinically tested. When to see a doctor.