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Last Tangle in Firefox

Snow Leopard + FontExplorer X screws up fonts in Firefox (especially Helvetica).

Incorrect Helvetica in Firefox rendition of zeldman.com

Snow Leopard plus FontExplorer X equals screwed-up fonts in Firefox (especially Helvetica).

  • Google Search on “Snow Leopard Firefox FontExplorer X” reveals numerous incidents of CSS displaying incorrectly in Firefox (wrong font weight, wrong font style) when Font Explorer X is on Snow Leopard Macs.
  • My Flickr thread contains a screenshot demonstrating the problem plus a useful discussion of causes and possible workarounds.
  • Disabling FontExplorer X solves the problem.

Update: Buying FontExplorer X Pro and clearing font caches also solves the problem. (The problem is with Apple’s fonts, not with Firefox or FontExplorer X, but it takes mediation to fix it.)

By Jeffrey Zeldman

“King of Web Standards”—Bloomberg Businessweek.

Principal & Creative Director, Automattic, Inc. Founder & Publisher, A List Apart. Co-founder, An Event Apart design conference. Publisher & co-founder, A Book Apart—brief books for people who design, write, and code. Have written two books, notably Designing With Web Standards, 3rd Edition. Faculty, MFA, Interaction Design program, School of Visual Arts, NY. Host, The Big Web Show. But what I really want to do is direct.