Did you just notice that?

What is photosensitive epilepsy?

For about 3% of people with epilepsy, or else 2 million people worldwide, exposure to flashing lights at certain intensities or to certain visual patterns can trigger seizures. This condition is known as photosensitive epilepsy

---

What is a chrome extension?

Google Chrome extensions are programs that can be installed into Chrome in order to change the browser's functionality. They are very easy to install and after installation, they work seamlesly in the background without us having to do anything

---

Does it work on desktop, mobile devices?

Both! It works for desktop devices and on Android devices. For Android, you will have to download an extra app, which is free

---

What makes a GIF dangerous?

In general, there are three things that can make media content dangerous
1) Large enough flashes with great enough contrast at specific frequencies
2) Frame transitions including saturated reds
3) Some geometrical patterns, such as striped patterns

---

What is the algorithm behind this?

The algorithm is based on the work of leading scientists in photosensitive epilepsy, like Dr. Harding from Cambridge University and Professor Binnie from King's College London. It detects flashes in content and will soon detect red transitions and dangerous patterns also

---

I am 100% safe when using this?

No one can be sure about all the variables that trigger a seizure. This is a very sensitive matter, and I take it very-very seriously, so I would never guarantee that. However, I have followed the most established guidelines worldwide for minimizing the risk of having a seizure

---

Does it work on every single website?

It works on nearly all websites, for example you will have no problem while browsing around the web, like on Wikipedia and googling around 'random' websites. However, some websites store GIFs as videos, so it is a little difficult to detect. I am constantly working on supporting every single website

---