Unfortunately, designers’ eyesight may be better than that of many of us who use the sites they create, resulting in perfectly responsive pages with a type that is too small to see. I’m sure you’ve had the sensation of squinting and leaning in closer to read the type on a page or decipher a symbol as often as I have.
You’re probably aware that you can scale the contents of a page using keyboard keys in Safari for macOS (and other browsers). To downsize everything on a page relative to its 100 percent scale, use Command-hyphen (used here as a “minus”). To enlarge a page, press the Command-equal sign (also known as the plus symbol) on the keyboard. (You don’t have to press Shift to “type” the + sign because Safari detects the purpose.) Command-= or Command-Shift-= can be used.)
Some sites are more tolerant of this growth and decrease than others. To return to Actual Size, press Command-0 (zero), whatever that implies in a relative universe.
The Zoom options reveal the scale of open sites in your browser, as well as any modifications you’ve made to other sites you’ve visited. I didn’t set a custom zoom for Zoom’s site, which is ironic.
What you might not realize is that Safari saves your zoom options in a way that allows you to change them later and set an overall default. Click Zoom in Safari > Preferences > Websites. You may see a list of the zoom percentages for open tabs and windows, as well as any custom zoom values you’ve set for other sites you’ve visited with the browser, in this section.
You can also alter the default zoom for any site you visit later by using the “When visiting other websites” pop-up option.
Because the keyboard shortcuts are virtually identical, Apple offers another type of zoom as part of its accessibility tools, which can be confusing. The Zoom option in Accessibility enlarges the entire display in increments greater than 100%. To enlarge the display, use Command-Option-equal sign, and to shrink it, press Command-Option-hyphen. A hundred percent is the bare minimum. (Command-Option-8 switches between your previous enlargement and 100%.) More customization options are available in the Accessibility preference pane’s Zoom view.
The Zoom option in Accessibility allows you to magnify the entire display over 100% and then back down or toggle between 100% and your previous enlargement factor.