How to set a default zoom level for all websites in Safari?
Jul 13, 2025 am 12:40 AMSafari does not support setting the global default zoom level directly, but there are several ways to implement workarounds. First, users can manually adjust the scaling ratio of each website, which Safari will remember; second, you can use extensions such as Zoom Page WE to set the default scaling ratio and apply it by domain; finally, although some terminal commands have been used to adjust Safari behavior, due to Apple restrictions, its effectiveness may fail with system updates, so it is recommended to use extensions first and ensure that they are compatible with the system.
Safari doesn't offer a built-in option in its standard settings to set a global default zoom level for all websites. But that doesn't mean it's impossible — there are worksarounds and tools you can use to get the job done.

Use Safari's Built-in Zoom Settings per Website
While Safari won't let you set a global zoom level, it does remember zoom levels per website . So if you manually zoom in or out on a site, Safari will keep that setting next time you visit.
- To zoom in: Press
Command
- To zoom out: Press
Command
-
- To reset zoom: Press
Command
0
Once you've adjusted the zoom on one site, Safari saves that preference. If you want a consistent zoom across many sites, you'll need to adjust each one individually at least once.

Use a Safari Extension to Automate It
If you're not keen on adjusting every single site, you can use third-party extensions like Zoom Page WE or Tab Resize . These tools often allow you to:
- Set a default zoom percentage (like 125% or 150%)
- Apply zoom settings globally or by domain
- Override a website's own scaling behavior
To install an extension:

- Open Safari and go to Preferences > Extensions
- Click “More” in the Safari Extensions Gallery
- Search for a zoom-related extension
- Install and configure according to the tool's instructions
Note: Not all extensions are actively maintained, so be sure to check reviews and compatibility with your version of macOS.
Try Terminal Commands (Advanced)
There are some Terminal commands that claim to change Safari's default zoom behavior, but they tend to be outdated or only affect specific versions of macOS. As of recent macOS releases, Apple has locked down many of these settings, so results may vary.
If you're comfortable experimenting:
- Open Terminal
- Try entering commands like:
defaults write com.apple.Safari WebKitInitialTimedLayoutDelay 0.25
(This isn't a zoom command, but similar syntax is used for Safari tweaks.)
Keep in mind that unsupported defaults may stop working after Safari updates.
Setting a universal zoom level in Safari takes a bit of workaround magic. If you're OK with adjusting a few key sites manually, that might be easiest. Otherwise, give a browser extension a try — just make sure it's compatible with your system.
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