To clear cookies on a Mac, the steps depend on the browser you are using. Here are the instructions for the most common browsers:

Safari

1. Open Safari.
2. Click on Safari in the menu bar and select Settings (or Preferences).
3. Go to the Privacy tab.
4. Click Manage Website Data.
5. Select one or more websites and click Remove , or click Remove All to delete all cookies.
6. Confirm the removal when prompted.

Optionally, to clear the cache as well:

• Enable the Develop menu by going to Safari > Settings > Advanced and checking Show Develop menu in menu bar.
• Then go to Develop > Empty Caches to clear cached files

Google Chrome

1. Open Chrome.
2. Click the three-dot menu in the upper-right corner.
3. Go to More Tools > Clear browsing data.
4. Choose a time range (e.g., last hour or all time).
5. Check Cookies and other site data and optionally Cached images and files.
6. Click Clear data

Firefox

1. Open Firefox.
2. Click the menu button (three horizontal lines) and select Settings.
3. Go to Privacy & Security.
4. Under Cookies and Site Data , click Clear Data.
5. Check Cookies and Site Data and optionally Cached Web Content.
6. Click Clear and then Clear Now to confirm

These methods will remove stored cookies, which may log you out of websites and reset site preferences. You can also block future cookies in Safari by selecting Block all cookies in the Privacy settings if desired

. For a more automated approach, third-party apps like CleanMyMac can clear cookies from multiple browsers at once