Facebook, Instagram and TikTok are launching new features to encourage people to get their coronavirus booster jabs.
From Friday, users will be able to update their profiles with frames or stickers to show that they have had their top-up jab or aim to when they become eligible.
It follows on from people previously being able to show they have had their first and second jabs on certain social networking websites and apps.
TikTok also held a “grab a jab” event in London earlier this year.
More than 16 million booster vaccines have now been given across the UK.
People who are aged 40 and above and received their second dose of their vaccine at least six months ago are currently eligible to have their booster.
A new campaign advert is also being launched on Friday, which shows how Covid-19 can build up in enclosed spaces and how to prevent that from happening.
Vaccines minister Maggie Throup said: “Getting your booster is one of the most important things you can do to protect yourself and your family this winter.
“It is fantastic to see some of the biggest household names further back the phenomenal vaccine rollout, allowing their users to proudly display that they have played their part in helping us build a wall of defence across the country.
“I urge everyone who is eligible – don’t delay, get your vaccine or top-up jab today to protect yourself and your loved ones.”