4chan Archives ((free)) -

4chan is anonymous, but it is not immune to doxxing (revealing personal info). Archives inadvertently preserve doxxing attempts, hate speech, and illegal content that was deleted from the main site. Archive moderators face a constant battle to scrub this material from their databases, often operating in a legal grey area.

It is important to remember that 4chan archives reflect the raw, unfiltered nature of the site. Because the archives use automated scrapers, they capture everything—including content that might be offensive, controversial, or legally gray. 4chan archives

While not a dedicated 4chan archive, the Internet Archive’s Wayback Machine has saved occasional snapshots of 4chan boards. However, because 4chan relies on JavaScript and dynamic loading, these snapshots are often broken. It is unreliable for thread preservation. 4chan is anonymous, but it is not immune