Decreased Productivity is a free Chrome extension developed by andryou that provides users with a stealth browsing experience. This add-on lets you control what you want to see while surfing the web, including options for text/page background colors, hiding page favicons, changing fonts, and more. With tab-specific support and domain whitelisting/blacklisting, DP creates a consistent browsing experience for you and those around you.

The extension supports a wide range of languages including Arabic, German, English (US and British), Spanish, Tagalog, French, Italian, Japanese, Korean, Portuguese (Brazilian and Portugal), Russian, Turkish, Vietnamese, Chinese (Simplified and Traditional). The Options page allows you to customize the extension's settings, and you can choose between four modes - Paranoid, SFW0, SFW1, SFW2, and NSFW. DP also features a keyboard toggle (CTRL + 12) and a toggle icon in the address bar that can be customized with one of 98 different icons.

Please note that the developer is not responsible for any consequences resulting from the use of this extension and encourages responsible browsing. Decreased Productivity has been featured on Lifehacker, and it's a great tool for those who want to discreetly surf the web.