How to add mouse pointer lines like these to the website?

[TugceWip]

Hello,

There are websites that will make lines like these follow mouse pointer how does they do that?

 

[crampon]

it's a library, the name is particles.js

Spoiler: particles.js

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[TugceWip]

it's a library, the name is particles.js

Spoiler: particles.js

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Thank you @crampon for the help