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Don't use that license, use something similar like MIT, BSD or Apache instead.

would you mind pointing out why?

those are very dissimilar licenses in the sense that wtfpl is basically a cute way of putting something into the public domain, while MIT et. al. do actually have (albeit minor and reasonable) restrictions on the conduct of people using the code.

There is no disclaimer of liability and implied warranty. You may be on the hook for damages if someone uses your code under the WTFPL and there is a bug that causes them to lose money.

You can use zero-clause BSD[1] or MIT no-attribution[2].

[1] https://opensource.org/license/0bsd

[2] https://opensource.org/license/mit-0

WTFPL is a fine license. It's even FSF approved.

The FSF certifies that it's a free software license that's compatible with the GPL, but they recommend against using it: https://www.gnu.org/licenses/license-list.en.html#WTFPL

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