How to Block True Crime Posts on Reddit (2026 Guide)

To block true crime posts on Reddit in 2026, install Ultimate Reddit Filter, paste the true-crime keyword preset below, and block the main true-crime subreddits (r/TrueCrime, r/UnresolvedMysteries, r/serialkillers). The setup takes under two minutes and removes murder cases, cold case discussions, and true crime documentary content from r/all and r/popular.

Last verified: May 25, 2026 · Reading time: 3 min · Difficulty: Easy

TL;DR

• True crime has a consistent vocabulary — the keyword preset below catches most of it.
• Best tool: Ultimate Reddit Filter (free, Chrome + Firefox).
• The subreddit block handles dedicated true crime communities; keywords catch cross-community posts.
• Effective for both the dedicated true crime community and crime news that bleeds into r/all.

The setup

1. Install Ultimate Reddit Filter

Free, Chrome + Firefox. Chrome Web Store · Firefox Add-ons.

2. Paste the true-crime keyword preset

Extension icon → Keywords tab:

true crime
serial killer
serial killers
murder case
murder trial
mass shooting
school shooting
body found
missing person
missing woman
missing child
cold case
unsolved case
unsolved murder
crime documentary
crime scene
crime scene photos
autopsy
forensic evidence
suspect arrested
convicted killer
death row
life sentence
fbi most wanted
manhunt
killer identified
victim identified
crime podcast

3. Block the true-crime subreddits

Subreddits tab:

r/TrueCrime
r/UnresolvedMysteries
r/serialkillers
r/Criminology
r/CrimeJunkie
r/MorbidReality
r/Missing411
r/LetsNotMeet
r/RBI

4. Optional — news crime content from r/news and r/worldnews

True crime posts also surface in r/news and r/worldnews when a major case makes the news. If you want to keep those subs but filter crime content, the keyword list above handles most cases.

If you want to go further, add these to the keyword list:

arrested for murder
charged with murder
pleaded guilty
found guilty
acquitted
appeal denied
prison sentence
parole denied

5. Enable comment filtering (optional)

True crime case discussions spread into comment threads of r/news posts and general subs. Settings → Filter comments too catches these, but will also filter crime-adjacent comments in non-crime contexts. Use selectively.

6. Reload and verify

Browse r/all and r/news. If specific case coverage still appears, add the case name or key terms to your keyword list.

What this won’t do

• Won’t block crime fiction — TV crime dramas, mystery novels, and fictional crime content don’t usually share vocabulary with true crime coverage.
• Won’t filter breaking news crime posts from general news subreddits if the title uses news framing rather than true-crime framing. Add specific case names when you’re aware of a case you want to avoid.
• Won’t work on the Reddit mobile app. Use Kiwi or Yandex (Android) or Orion (iOS) for mobile.

Going nuclear

For complete removal of crime-adjacent content, News Feed Eradicator removes the Reddit homepage feed entirely. Combined with only browsing topic-specific subreddits directly, this is the most reliable approach.

If it’s not working

• Specific case still appearing? Add the case name or the primary suspect/victim name to the keyword list.
• r/news still surfacing crime content? Add the specific subreddit or turn on keyword filtering specifically for r/news content.
• Comments still heavy with true crime? Enable “Filter comments too” in the Settings tab.

Related guides

• Reddit keyword blacklist: complete guide — the master preset reference.
• How to filter Reddit: complete 2026 guide — covers all filtering methods.
• How to block political posts on Reddit — if you’re building a broader news filter.
• Best Reddit keyword filter extensions 2026 — full tool comparison.

What to do next

Install Ultimate Reddit Filter, paste the preset, block the subreddits, reload Reddit. Two minutes.

Join the waitlist — the FeedCutter preset pack includes a true crime filter with regular keyword updates.