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Troubleshooting

What to try when a site doesn’t work, Luma is slow or something looks wrong, and how to tell us.

A site doesn’t work

Try these in order, and stop when the site works again.

  1. Turn off protections for the site: click the shield in the address bar, then Is this site not working?. The page reloads without blocking. See Blocking ads and trackers.
  2. Reload the page ignoring the cache with Ctrl+Shift+R.
  3. Open the site in a private window (Ctrl+Shift+N). Extensions don’t run there and the site’s stored data isn’t used. If the site works there, the cause is an extension or the data the site saved.
  4. Turn off your extensions one at a time: open Extensions from the ⋯ menu and click Turn off. See Extensions.
  5. Remove the site’s data: in the privacy dashboard, find it under Site data and click Remove. You’ll be signed out of that site.

If turning off protections fixed it, click Report this site in the privacy panel, so the filter lists can be fixed for everyone.

Clear browsing data

  1. Press Ctrl+Shift+Delete, or go to Settings › Privacy & security and click Clear data….
  2. Choose a Time range.
  3. Tick what to clear: Browsing history, Cookies and site data, Cached images and files, Download list, Site permissions and exceptions.
  4. Click Clear data.

Start fresh

Luma has no single button that resets everything. Instead:

  • To find out whether a problem comes from your settings or data, create a New profile in Settings › Profiles. It opens in its own window, with default settings and no data. See Profiles.
  • Shortcuts you changed go back to normal with Reset all in Settings › Keyboard shortcuts.
  • Sites where you turned protections off are listed under Protections turned off in the privacy dashboard.

Luma is slow, or the screen flickers

  • Efficiency mode, in Settings › Performance, uses less memory, CPU and battery: background tabs sleep after 10 minutes, and the interface skips animations and blur.
  • If you see flickering, black areas or other drawing problems, turn off Use hardware acceleration in Settings › Performance. It applies after you restart Luma.
  • Open the Task manager with Shift+Esc to see which tab uses the most memory or CPU, and click End process to stop it.

Tell us

If none of this helps, tell us on the Discord. See Contact and community for what to include.