Kaspersky VirusDesk
Kaspersky is known by all as the largest security and protection company. The company also launched a free link checking site. All you have to do is access the site and put in the link you want to check.
Phishtank
This site specializes in checking the links of phishing, the hackers know that they are creating links to catch and penetrate the victims, and this site will help and protect you by placing the link in the box and so will ensure its safety.
Virustotal
Is a service purchased by Google not long ago, and allows you to check the site before clicking on it by placing the link in the box, and you can also examine the files on it.
Is Google's secure browsing technology that allows you to discover unsafe internet links on a daily basis and when placing a link, the service will tell you if the site is currently a threat to your visit.