Google DictionaryPut some extra language knowledge into your browser by adding in the official Google Dictionary extension. With it in place, you can double-click any word on the Web to see a pop-up bubble with its definition.
Chrome Quick SearchHighlighting text and dragging it to the top-most area of the browser -- next to your right-most tab -- will launch a search or navigation in a new tab rather than the current one.
Need a Restart?Type chrome://restart into the browser's Omnibox.
But use caution with that command; if you've set your browser to automatically restore open tabs when it restarts, you could find yourself in an endless loop of re-launching.
Use the Download Bar!Ever want to copy a file to your desktop after you've downloaded it? Easy: Click the file's tile in the download bar at the bottom of your browser and drag it directly onto your desktop.
You can drag a file from the download bar directly into an online service, too -- like Google Drive, Dropbox, or G mail. The file will be uploaded without any extra effort on your behalf.
Delete Browser History
Store Web pages in PDF formatWhen you come across the important web pages that contain information or other references, You can save the webpage into a PDF format easily
The trick is to press Ctrl + P on the Windows desktop or Cmd + C on the Mac desktop.
After the selection appears, immediately choose "save as PDF" to download a web page into a PDF format.
keep videos and other Flash content from automatically playing when you open a page
Type chrome://settings/content into Chrome's Omnibox (aka its address bar), scroll down to the section labeled "Plug-ins," and select "Click to play." Now, any piece of multimedia content will appear as a grayed-out box until you click to activate it.
Be aware that this may cause issues with certain websites; you'll probably want to click the "Manage exceptions" button and whitelist sites that rely heavily on plug-ins to operate -- YouTube, Vimeo, and Pandora, for instance -- in order to avoid any funky behavior.