By now, we’ve all encountered captcha images in online forms. Captchas are a necessary evil, and this article will teach you how they’re made.
Please note that while there are better, automatic third party solutions for captchas out there such as ReCaptcha, this tutorial aims merely to explain and demonstrate how such technology actually works. We won’t be explaining what captchas actually are, as it’s assumed to be common knowledge and already covered in greater detail elsewhere.