Are there any legal and genuinely free platforms to read popular comics without ads?

For popular, mainstream comics from publishers like Marvel, DC, Image, etc., finding a genuinely legal, free, and ad-free platform is virtually impossible. These comics are copyrighted works that require licensing fees. However, public libraries often provide access to digital comics through services like Hoopla Digital or Libby (OverDrive), which allow you to 'borrow' digital comics for free with your library card. These platforms are usually ad-free and represent a legal and ethical way to access a wide range of popular titles. For independent or webcomics, many creators offer their work for free directly on platforms like Webtoons or Tapas, though these might include some ads or premium options.