Log in to your Gmail account.
Click “Compose” to start a new email message.
Click the “Rich formatting” link in the new message to change the Gmail input method to Rich Text.
Click the “Settings” icon, which resembles a gear. Click “Settings” from the drop-down menu.
Scroll down to the Signature portion of the Settings page. Select the profile in which you want to include the signature from the available drop-down menu.
Type out a name or the URL for the hyperlink you want to include in your Gmail signature in the Signature field.
Highlight the link text with your mouse. Click on the “Link” icon, which resembles a chain, in the signature menu.
Click the “Web address” radio button and enter the URL in the provided text box. Test the link, if desired, by clicking “Test this link.” When satisfied, click “OK.”
Scroll to the bottom and click “Save Changes.”