How do you check if a link is spam or not?

I'm curious, could you please elaborate on the process one would follow to verify if a LINK is spam or not? I'm aware of the potential risks associated with clicking on unknown links, and I'm looking for reliable methods to ensure my online safety. What steps should I take to inspect a link and determine its authenticity? Is there a specific tool or technique that you recommend for this purpose? I'd appreciate any insights you can share on this matter.