Web app allows to style and format text with bold, underline, italic and other special characters for use inside Facebook, Instagram, Twitter and other social media by using unicode characters.
Key features:
100% free (ad-supported)
My comment: The only tool I know that allows you to type in bold and other styles inside social media posts. Not 100% reliable across all situations, but so good when it works that I feel like recommending it.
N.B.: The issue is this. Those special characters created with QQText may not be visible on 100% of devices as some apps or social media platforms do not support them fully. Beware of this. Test and verify across devices and different operating systems whether everyone sees exactly what you expect.
Try it out now: https://yaytext.com/