Giftoo is a website where you can create and share GIFs. It's a free service and there is no sign-up required. However, because it is a free service, there are some ads on the site. The ads are not intrusive and should not interfere with your use of the site. In terms of safety, Giftoo appears to be a safe website. There have been no reports of malicious activity or problems with the site. However, as with any website, it is always advisable to exercise caution when sharing personal information or clicking on links.