Magazine publisher Condé Nast said it would put all its titles behind paywalls by the end of the year, as pressure builds on major publishers to generate more revenue beyond advertising.

Three Condé Nast titles, the New Yorker, Vanity Fair and Wired, already are behind metered paywalls that require consumers to subscribe in order to access more than four articles each month. Now, the company plans to build digital subscription businesses around its other titles, including Vogue, GQ, Bon Appétit and Glamour.

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