Opera Dragonfly — Take a peek into the futureWelcome to Opera Dragonfly alpha 4, the next stage in the evolution of Opera's premier developer tools. Debug JavaScript and inspect CSS, the DOM and HTTP headers, right from the comfort of your Opera browser. If you deploy on mobile, no problem: Opera Dragonfly supports remote debugging to communicate directly with Opera Mobile, and other Opera Presto powered devices. Opera Dragonfly is included in Opera 9.5 and above, and can be activated by clicking Tools → Advanced → Developer Tools in the Opera menu bar.
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