The Magnified Mess
Google Chrome remembers the zoom level you set for each website and automatically applies it every time you revisit that site. If you accidentally pressed Ctrl + + (or Ctrl + Scroll Wheel Up) while browsing a site, that page’s zoom level increases permanently for all future visits. Over time, you may find that different websites display at wildly different zoom levels — one site is at 125%, another at 80%, a third at 150% — creating a jarring, inconsistent browsing experience. The per-site zoom settings persist even after clearing browsing data, making them surprisingly difficult to reset without knowing exactly where to look.
Resetting and Controlling Zoom Levels
To stop Google Chrome from automatically applying mismatched zoom levels across different websites and restore a consistent viewing experience, you must reset the stored zoom settings and adjust the default.
Open Google Chrome. Click the three vertical dots in the top-right corner and select Settings. In the left-hand navigation pane, click on Appearance. Look for the Page zoom drop-down. This controls the default zoom level for all websites that do not have a custom zoom set. Change it to your preferred default (100% for standard, or higher if you prefer larger text globally). To clear all existing per-site zoom overrides, go to Settings > Privacy and security > Site settings. Scroll down and click on Zoom levels (on some Chrome versions, this is under Additional content settings). You will see a list of every site where you have a custom zoom level. Click the X next to each entry to remove the override, or click Remove all if available. Alternatively, on any individual page, press Ctrl + 0 (zero) to instantly reset that page’s zoom to the default level. This shortcut is the fastest way to fix a single misconfigured site.