KeywordGuard – Parental keyword blocking for YouTube

Let parents block YouTube and YouTube Kids videos by keyword and tag.

Problem

Parents on Google's own support forum asked for keyword-level video blocking and had their posts removed or locked; existing controls only cover channels, so kids still see garbage, violence, or unwanted topics. There is no practical way to say 'never show my child anything with this word or tag.'

Solution

A browser extension and companion app that scans YouTube titles, tags, captions, and recommendations, then hides or blurs any video that hits a parent-defined keyword or tag list. It supports allowlists, per-channel exceptions, and a daily viewing digest for the parent.

Users

Parents of pre-teens and teens who watch YouTube or YouTube Kids on web and mobile

MVP

Web extension for YouTube; parents add or import keyword and tag blocklists; matched videos are hidden in feeds and closed on the watch page; all rules stored locally; a daily email summary of blocked hits

Revenue

Free base app, subscription for multi-device sync, shared blocklists, and family reports; optional one-time lifetime license

Why now

The official platform has refused to add this feature and suppresses discussion, leaving parents to seek third-party fixes; browser extension tech is mature and a single developer can ship an MVP quickly