Short URLs are easy to share thus solves the problem of sharing long urls with limited space length at Twitter, Facebook, etc. But with this useful advantages there’s also a major disadvantage with short urls and that is obfuscation.
Nobody by looking at a short url can say where it leads to. So anyone can use this to their advantage. Using a short url anyone could mischievously send you to an unrelated or malicious web page.
To solve this problem LongURL.org comes in. It expands the short urls, revealing the original url behind it, without you need to actually visit the short url. Using this online tool you could explore the original url behind any doubted short url and that to without actually going to the link.
There are some other similar websites such as
ExpandMyUrl and UnTiny. And also some browser extensions such as ChromeMUSE – Multi-URL Shortener/Expander provides the similar use.