Easily convert JPG image files to PNG.
Easily convert JPG image files to GIF.
Easily convert JPG image files to ICO.
Easily convert JPG image files to BMP.
Extract email addresses from any kind of text content.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get approximate IP details.
Take an IP and try to look for the domain/host associated with it.
Get & verify the meta tags of any website.
Get all the HTTP headers that an URL returns for a typical GET request.