uB-filter-by-kdroidwin: A Community Filter List for Blocking Fraud and SEO Spam in Search Results

What This Filter List Actually Targets

The repository is a set of subscription filters for uBlacklist, uBlock Origin, AdGuard, and Brave Shields. Its stated purpose is to exclude fraudulent or fake sites from search results and block access to them. The README lists a broad set of targets: clickbait, misinformation, propaganda, phishing, fake download buttons, and what it calls malicious affiliate sites. It also includes specific categories like press release sites, AI hallucination sites, and services with poor reputations. Notably, the list explicitly does not block pirated content, copyright-infringing material, or CSAM. That boundary is important because it shows the author is making a deliberate editorial choice, not trying to be a comprehensive internet filter. The filter is aimed at Japanese-speaking users, given the Japanese-language documentation and the examples of Japanese sites and services mentioned.

Subscription Structure and the Exclusion List

The project provides three separate uBlacklist subscriptions. The first is the basic filter. The second is marked as experimental and may block sites that should not be blocked. The third is an exclusion list that the README says is mandatory to reduce false positives from the other two. This three-tier structure is a pragmatic approach: it separates aggressive blocking from a corrective layer. The exclusion list is not optional if you use the first two, according to the documentation. For uBlock Origin and AdGuard, there is a single filter that blocks access to sites but still shows them in search results. There is also a separate filter for note.com articles with no content, and a tracking protection list for AdGuard DNS and AdGuard Home users. The tracking list is explicitly described as having many false positives and is not recommended for privacy-averse users. The Brave and Safari filter is a single file that works with those browsers' content blockers.

Installation Commands and URLs

To install the uBlacklist filters, you first install the uBlacklist extension. Then you use the subscription links provided in the README. For Chrome or Chromium browsers, the subscription URL is https://iorate.github.io/ublacklist/subscribe?name=uBlacklist-filter-by-kdroidwin&url=https://raw.githubusercontent.com/Kdroidwin/uBlacklist-filter-by-kdroidwin/main/uBlacklist.txt. For Firefox, the link format is different, using ublacklist.github.io. If those links fail, you can manually add the raw URLs in uBlacklist's options under Subscriptions. For uBlock Origin and AdGuard, the subscription link uses subscribe.adblockplus.org with the raw file URL for uBlockorigin.txt. The Brave and Safari filter is simply a raw URL to Brave_safari.txt. The tracking protection list is a separate raw URL. The README gives no command-line installation method; everything is done through browser extension subscription mechanisms.

The Scope of Blocking: Subjective and Broad

The filter's target list is unusually broad and subjective. It includes categories like 'bad affiliate articles' where the criteria are vague: no criticism of the product, excessive purchase prompts, and copied text. It also targets sites that are 'AI hallucination prone' and 'propaganda from Russia or China'. These are not objective technical categories. The README acknowledges that the second uBlacklist filter is experimental and may block sites that should not be blocked. The uBlock Origin filter is described as powerful but may block unrelated sites. This subjectivity is a genuine limitation. If you subscribe to the aggressive filters, you are trusting the maintainer's judgment on what counts as 'malicious' or 'low quality'. That might be fine for you, but it means the filter is not a neutral tool. It is a personal editorial statement.

Maintenance and Update Cadence

The repository has a recent release history: v1.5.3 on June 12, 2026, v1.5.2 on June 9, 2026, and v1.5.1 on June 7, 2026. That is a release every few days. The README mentions a full changelog on GitHub and a star notification for important changes. This suggests active maintenance. However, the project is not archived, and the last push is the same date as the latest release. The maintenance cost for a user is low: you subscribe once and the extension updates automatically. But the rapid release cadence means the filter content changes frequently, and you may see shifts in what is blocked without warning. The license is GPL-3.0, which means the filter lists are open source, but you should be aware that the project includes parts from Dandelion Sprout's Anti-Malware List under the Dandelicence v1.4, and it is based on FMHYFilterlist. That means the final list is a mix of licenses, though the project itself is GPL-3.0.

A Real Alternative: FMHYFilterlist and Dandelion Sprout

The README credits FMHYFilterlist as the base for this project and Dandelion Sprout's Anti-Malware List as a source. Those are real alternatives. FMHYFilterlist is a community-maintained filter for uBlacklist that focuses on blocking low-quality and spam sites, but it is broader and less focused on Japanese-language content. Dandelion Sprout's Anti-Malware List is a larger, more established filter that targets malware and scam sites specifically. The difference in approach is that FMHYFilterlist and Dandelion Sprout tend to have more conservative, evidence-based criteria, whereas this project explicitly includes subjective categories like 'bad reputation services' and 'propaganda'. If you want a filter with clearer, more technical inclusion rules, those alternatives are worth trying. They also have longer track records and larger communities, though I cannot verify their current maintenance status from this material.

Licensing and Contribution Model

The project is licensed under GPL-3.0, which means you can use, modify, and redistribute it under the same license. The README invites contributions via pull requests or issues, and it says a bot handles sorting, so you do not need to worry about ordering. There is also a Tally form for people without GitHub accounts. The contribution model is open, but the maintainer has final say on what gets included. The license implications are straightforward: if you fork this project, your fork must also be GPL-3.0. The inclusion of Dandelion Sprout's list under Dandelicence v1.4 is a nuance; that license is permissive but has specific terms. You should check the Dandelicence text if you plan to redistribute the combined list.

Editorial conclusion

Adopt uB-filter-by-kdroidwin if you are a Japanese-language user frustrated by fraudulent sites, fake reviews, and SEO spam cluttering search results, and you can tolerate occasional false positives. Skip it if you rely on niche sites that might be collateral damage, or if you need a filter with transparent, auditable rules. Before subscribing, review the raw filter files on GitHub, test the exclusion list with your regular searches, and decide whether the experimental second uBlacklist filter is worth the risk. The project's rapid release cadence and clear separation of exclusion rules make it a practical choice, but its subjective criteria mean you should verify its impact on your own browsing patterns first.

Frequently asked questions

Official sources

1. Official documentation
2. Official README
3. Project repository
4. Release notes