The social media site has also activated its 'safety check feature' so that people in Paris can let friends know they're safe with one click
Facebook are allowing users to show their support by adding the French flag colours to their profile picture
Facebook users the world over are showing their solidarity with the people of Paris by overlaying the colours of the French flag on their profile pictures.
The site is encouraging Facebook users to customise their profile pictures to 'support France and the people of Paris' after the sickening terror attacks last night.
If you wish to pay your respects and show your support, all you have to do is find a friend using the 'causes' feature in Facebook to customise their profile picture in your Facebook news feed.
All you have to do is click the 'Try it' button, located on the bottom right hand side of the box.
Facebook will then allow you to select your cause - currently, France is the only one listed - and customise your profile picture by changing its size and repositioning the image underneath the flag colours.
Use the drop-down menu to select the length of time you want your profile picture to last, then click 'Use as profile picture' and Facebook will automatically update.
The site has also activated its safety check feature, which has been used during previous disasters, allowing users living in Paris to let their friends and family know that they are safe in one easy click.
Last night, CEO Mark Zuckerburg posted a message of support to the city on his own page, saying: "My thoughts are with everyone in Paris tonight.
"Violence like this has no place in any city or country in the world.
"We've activated Safety Check, so if you're in Paris you can mark yourself safe or check on your friends and family."
When News Breaks Out, We Break In. (The 2014 Bloggies Finalist)