Background Mask

backgroundMask lets particles punch through or blend with a masked background layer.

Example

backgroundMask: {
  enable: true,
  cover: {
    color: {
      value: "#0b1020",
    },
    opacity: 1,
  },
}

• enable: activates background masking.
• cover.color: mask cover color.
• cover.opacity: cover alpha level.

When to use it

• Spotlight-like effects.
• Contrast-heavy hero sections.
• Layered interactions on dark backgrounds.

Source reference

• https://github.com/tsparticles/tsparticles/blob/main/markdown/Options/BackgroundMask.md