Applies a CSS CRT scanline and vignette effect to YouTube videos
YouTube CRT Overlay is a lightweight UserScript that applies CRT aesthetic to YouTube videos.
Unlike complex WebGL shaders, this script uses high-performance CSS overlays and filters.
0.6px), saturation (1.2), and high contrast (1.3) to mimic the bleeding light of a CRT.mix-blend-mode and pointer-events: none, ensuring the video controls remain clickable and the browser doesn't lag.If you want to adjust the intensity of the effect, you can edit the script values:
blur(0.6px) from line 34.rgba(0, 0, 0, 0.25) on line 48.