Ultimate Reddit Filter vs Reddit Enhancement Suite (2026)

For new users in 2026, install Ultimate Reddit Filter — it is actively maintained, filters by keyword, flair, AND subreddit simultaneously, and also covers comments. Reddit Enhancement Suite (RES) has been in official maintenance mode since 2022 and is only worth keeping if you already rely on its broader power-user features (custom CSS, account switching, user tagging) that Ultimate Reddit Filter does not replicate.

Last verified: May 25, 2026 · Reading time: 6 min

TL;DR

• New user installing a Reddit filter today: Install Ultimate Reddit Filter.
• Existing RES user who only uses it for keyword filtering: Switch to URF.
• Existing RES user who uses CSS, account switching, or user tagging: Keep RES, add URF alongside for filtering.
• Both are free — this comparison is about which is better maintained and better at filtering, not price.

The verdict table

Feature	Ultimate Reddit Filter	Reddit Enhancement Suite
Keyword filtering (post titles)	✓	✓
Flair filtering	✓	✓
Subreddit blocking	✓	Limited
Comment filtering	✓	✓
Import / export keyword lists	✓	✓
Custom CSS	—	✓
Account switching	—	✓
User tagging	—	✓
Never-ending scroll	—	✓
Old Reddit + new Reddit	✓ both	✓ both (intermittent breaks)
Chrome	✓	✓
Firefox	✓	✓
Edge	✓ (via Chrome)	✓
Safari	—	✓
Maintenance status	Active — last update April 2026	Maintenance mode since 2022
Active maintainers	1 primary developer	2 volunteers
Pricing	Free	Free

Where Ultimate Reddit Filter wins

• It is actively developed. As of April 2026, URF shipped a meaningful update. RES has not shipped a new feature since 2022. This matters because Reddit changes its UI frequently — the extension that tracks UI changes is the one that stays reliable.
• Three-axis filtering in one tool. URF filters by keyword, flair, AND subreddit in a single lightweight extension. RES does this too, but URF’s filtering UI is cleaner and purpose-built for filtering rather than being one tab in a 30-feature extension.
• Lower weight. RES is an enormous extension with dozens of features most users never touch. URF does one thing well and doesn’t slow Reddit down to do it.
• Export and import. URF’s import/export is clean and documented. Backing up your blocklist before a browser update takes 10 seconds.

Where Reddit Enhancement Suite wins

• The breadth of features is still unmatched. Custom CSS per subreddit, user tagging, multi-account switching, inline image expander, keyboard shortcuts, never-ending scroll, comment highlighting. If you use any of these, RES is irreplaceable — URF doesn’t touch them.
• Safari support. URF has no Safari build as of May 2026. RES supports Safari, making it the only option for Mac users who haven’t switched to Firefox or a Chromium browser.
• Community documentation. Over a decade of forum posts, guides, and Reddit threads document every RES feature. URF has a smaller community base and less third-party documentation.
• Regex filtering. RES supports regex in keyword filters. URF uses substring matching only. For users who want pattern-based blocking (/trump.*/i), RES has the edge on flexibility.

Maintenance mode — what it means in practice

RES’s “maintenance mode” declaration (made in 2022) means the project’s volunteer maintainers fix bugs but don’t ship new features. This matters for Reddit filtering because:

1. Reddit changes its HTML/CSS structure regularly, which breaks extension selectors. A team in maintenance mode fixes these slower than an active developer.
2. New Reddit features (new layout variants, new feed types) won’t be supported by RES. URF tracks these.
3. If Reddit makes a structural change that breaks RES filtering and the two remaining maintainers are unavailable, the fix could take weeks or not arrive at all.

As of May 2026, RES still works. But the risk trajectory is clear.

Pricing comparison

Both are free, open source, no account required, no subscription. This comparison is entirely about functionality and maintenance, not cost.

Who should pick which

Your situation	Pick
New to Reddit filtering, just want topics gone	Ultimate Reddit Filter
Current RES user, only use it for keyword filters	Switch to Ultimate Reddit Filter
Current RES user, rely on CSS/user tags/account switching	Keep RES; optionally add URF alongside for better filter coverage
Need Safari browser support	Reddit Enhancement Suite (only option)
Need regex-based filtering	Reddit Enhancement Suite
Want the best-maintained tool long-term	Ultimate Reddit Filter

Can you run both at once?

Yes. They don’t conflict. Some users run both — URF for all filtering (keyword, flair, subreddit, comments), RES for the power-user features (CSS, account switching, user tags). This is a legitimate setup if you need both feature sets. URF stays active; RES handles the non-filtering utilities.

Common follow-ups

Will RES eventually break completely? Unknown. It’s possible. With only two volunteer maintainers and no new-feature development since 2022, the long-term outlook depends on whether the maintainers stay active and Reddit doesn’t make a breaking structural change. The risk is real enough that starting a new install on URF is the sensible choice.

Does URF have everything RES has for filtering specifically? Mostly. URF matches RES feature-for-feature on keyword, flair, subreddit, and comment filtering. URF adds flair filtering that is more ergonomic. RES still has regex support that URF lacks. For 95% of filtering use cases, URF is the complete solution.

I’ve been using RES for years — is switching worth it? If you only use RES for filtering: yes. Export your RES keyword list, import it into URF, done. If you use RES for CSS, user tags, or account switching: run both. The cost is zero.

Does either tool work on Reddit mobile? No. Neither browser extension works in the official Reddit iOS or Android app. On Android, Kiwi or Yandex Browser run Chrome extensions. On iOS, Orion Browser runs Chrome extensions. See how to filter Reddit on mobile.

What to do next

• Install Ultimate Reddit Filter — Chrome + Firefox, free.
• If you have an existing RES keyword list: export it from RES options → import into URF → both work simultaneously.
• See the full Reddit filtering guide for keyword presets and setup instructions.

Both tools are free and open source. No affiliate relationship exists for either.