When you browse through the internet and visit different sites, your browser saves contents and data in temporary storage.  This temporary storage is called "cache".  To get rid of the fluff you should clear the cache from time to time. 

  1. Open Chrome.
  2. At the top right, click More More
  3. Click More tools and then Clear browsing data.
  4. At the top, select the Advanced tab.  
  5. Select 'All time' in the drop box. 
  6. Check the top 4 boxes.
  7. Click Clear data.