Besides from characters in love, as well as a male character dressed up as a "fat Esmeralda", there is no sex and nudity.

Frollo chokes his pathetic partner.

Multiple scenes of human characters hitting others, either with bare hands or with any objects. Most of the scenes are comic relief.

People throw rotten vegetables at a man.

Frollo points his knife at another man's throat.

A very brief reference to hanging somebody.

Quasimodo is flogged. We don't see the execution itself, but the lashing is heard. Quasimodo's red back is shown later.

Quasimodo, and later two other characters, are chlorofied.

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WARNING: ENDING SPOILER BELOW:

Mild insults, such as "nit-wit", "stupid" and "idiot", are spouted by characters.

One scene involves an appearance of alcoholic beverage.

This film is basically nothing compared to Disney's "The Hunchback of Notre Dame".