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Editorial Team
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Asked: 2026-05-26T22:18:14+00:00

Battlelog was released by EA alongside Battlefield 3 recently, and I’m curious how it

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Battlelog was released by EA alongside Battlefield 3 recently, and I’m curious how it is able to launch games, such as Battlefield 3, from a web browser?

More generally, how does a website launch programs locally?

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  1. Editorial Team

    I’m one of the developer responsible for the launch part of Battlelog. It’s handled by a combination of the installed web browser plugin and JavaScript. Launching the game basically goes through these steps.

    1. We figure out where you’ve installed the BF3.exe by using a registry key
    2. We use the plugin to launch that exe with a couple of command line options
    3. When the game client has launched, it opens a connection back to the plugin, for two-way communication between Battlelog and the game.
    4. Game client sends state info and error messages back through the connection, so we can show progress and errors in Battlelog, and also know when the game has closed down.
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