What are the possible reasons for a sudden surge of NSFW images on Reddit's main feed, and what steps can users take to

Many Reddit users have noticed a sudden flood of NSFW (Not Safe For Work) images on the main feed—sometimes every few posts [1]. A mix of algorithmic quirks, your own activity, and spam attacks can be behind it. Below are the likely reasons, followed by simple steps to clean up your feed.

Why the surge might be happening

• The recommendation algorithm acts up: Some people report that the home-feed algorithm has been “acting up,” showing mainly NSFW content even from subreddits they don’t follow [2].
• Your past interactions: Reddit’s algorithm pays attention to what you click, upvote, or comment on. If you’ve engaged with NSFW subreddits in any way, it will recommend more of that type of content [3].
• Coordinated spam attacks: Spammers flood Reddit with NSFW images using tricks that push their posts to a wider audience. They build post karma quickly [5], hack into moderator or user accounts [8], use endless supplies of old accounts [10], and steal popular post titles to look legitimate [11]. These attacks can overwhelm subreddits [9] and even get entire subreddits flagged as NSFW [6] [7], sending adult content onto the main feed.

How to filter the NSFW out

• Use r/popular instead of your Home feed or r/all: r/popular filters out NSFW content entirely [4], giving you a clean browsing experience right away.
• Turn off adult content in your account settings: Go to your Reddit User Settings > Feed Settings and toggle Adult content off and Show NSFW Content (18+) off [16]. On some layouts, look for a “show mature content” toggle in your account settings [13].
• Blur NSFW images: In the Reddit app, go to Settings > View options and turn on Blur Mature (18+) images & media [18] [19]. On the desktop site, go to Preferences and enable Blur mature (18+) images [18]. If you use an iPhone or iPad, check your device’s settings as well, because iOS may control the blur separately [17].
• Skip the search-bar trick: Typing nsfw:no or nsfw:yes in the search bar no longer works—Reddit removed that filtering option [12] [14].
• Stop engaging with NSFW posts: Since the algorithm pushes more of what you interact with, avoiding clicks, upvotes, and comments on adult material will gradually steer the feed away from it [3].

Using just one or two of these steps can make a big difference—combining them will turn your Reddit feed back into the work-safe space you want.