I’ve been noticing a lot of different fonts on Google AdSense here on SEJ, and AdSense has been known to test new fonts since 2008 and back in 2006 I documented how AdSense Font Size changed with Firefox Browser Text Size, now AdSense is letting publishers set their preferred fonts in the AdSense Editor.
The fonts Google is letting bloggers and publishers currently choose are Arial, Times and Verdanna. Ideally the service would automatically optimize and/or suggest your site’s best fonts via an AdSense Alerts or notes from the Optimization Team, but perhaps that will happen in the future. [More from the Inside AdSense Blog]
For now, just log into your AdSense account, select the My Account Tab, then Account Settings. Under Account Settings select Ad Display Preference and you’ll see the dropdown for selecting a preferred Google Adsense font.
You can also set up specific fonts per Ad type :
However, you can also select custom font faces for specific ad units that you’ve created with the Manage Ads feature. When creating new ad units, you’ll be prompted to select between the default ‘Standard AdSense font family’, your new account-wide font face (if you’ve selected one), or another font face. You can also change the appearance of existing ad units, by visiting the Manage Ads page of your account and updating your font choices for specific ad units. Once you’ve changed the font face of an ad unit away from the default, those selections will be maintained even if you change your account-wide settings later.