Change preferences in Safari on Mac

Use Safari preferences to make browsing the internet work best for you.

In the Safari app on your Mac, choose Safari > Preferences, then click a preference pane:

General: Change your homepage, and choose what to see when you open a window or tab, how long to keep your browsing history, which bookmarks to show in Favorites view, and choose where to save downloads and how long to keep them.
Tabs: Choose when to open pages in tabs, choose to move tabs into the toolbar, select to use keyboard shortcuts, and select to show website icons in tabs.
AutoFill: Select to automatically fill previously saved contact information on forms, automatically enter previously saved user names and passwords when revisiting websites, and automatically enter previously saved credit card information on webpages.
Passwords: View, add, change, remove, and share the user names and passwords you’ve saved for websites.
Search: Choose the search engine you want to use when searching the web in Safari, and select how to use the Smart Search field to help with searches.
Security: Turn on warnings when you visit a suspected phishing website, and allow websites to use JavaScript.
Privacy: Prevent third-party content providers from tracking you across websites, block cookies from being stored on your Mac, remove some or all cookies that are stored on your Mac, allow websites to check if you have Apple Pay enabled, and allow Apple websites and apps to check if you have Apple Card on your Mac.
Websites: For individual websites, choose to block ads, prevent videos from playing, block pop-ups, and more.
Extensions: Add custom controls, change the appearance of web content, and more by installing Safari extensions from the Mac App Store.
Advanced: Show full website addresses in the Smart Search field, set a minimum font size for webpages, automatically save articles for offline reading, access tools for developing websites through the Develop menu, and more.

To learn more about the options in a pane, click the Help button at the bottom of the pane.

Source: https://support.apple.com/guide/safari/change-safari-preferences-ibrwcd8bc28e/mac