Photosensitivity Video Blocker is a free Chrome extension developed by Avenar Codeworks. It is designed to help photosensitive individuals and those who want to reduce overwhelming animation on the internet. By scanning webpages, this tool identifies animated .gif, .png, and .webp image files and replaces them with pre-paused versions. It also works to pause and prevent automatic playback of video elements.

With the aim of creating a safer browsing experience, Photosensitivity Video Blocker ensures that animated images are only played when the user clicks on the "play" button overlaid on top of the animation. Videos, on the other hand, require multiple clicks to start playing, which helps to address autoplay behavior. While this may be a minor inconvenience, it allows the extension to effectively block videos that could potentially cause discomfort or harm.

It's important to note that Photosensitivity Video Blocker is not a perfect solution and users should exercise caution when browsing the internet. The extension strives to block as much disruptive content as possible, but it may not catch every instance. Nevertheless, the developers are committed to ongoing development and addressing any issues that users may encounter.