The purpose of a severability clause is to enable a court to exclude any portion of the agreement or policy that is not enforceable (for whatever reason), and to enforce the agreement as if the unenforceable provision had not been included. This can sometimes be a safety net for drafting mistakes. Language which permits the unenforceable clause to be limited in such a way as to make it enforceable invites the courts (and the parties) to construe the clause in a limited fashion. Some severability clauses go further and give express permission to the court to revise the clause to make it enforceable (also referred to as ‘blue pencilling’). Courts are often reluctant to rewrite agreements using this clause, especially if there is a large imbalance in bargaining power between the parties and the result would be inequitable to the party with less bargaining power. If the site/app is for consumer goods or services, the courts will likely be very reluctant to use a severability clause to the disadvantage of the consumer. A severability clause will not save a clause which violates public policy.