How to Block Swear Words in YouTube Comments

Quick Answer

Short answer: Install the free PureWord Chrome extension to filter swear words in YouTube comments automatically. It masks profanity with asterisks as comments load while scrolling, covers titles and descriptions too, runs entirely on your device, and Parental Lock keeps children from revealing masked words.

YouTube comment sections are among the most profanity-heavy places on the web. A video that is perfectly fine to watch can have hundreds of comments that are not and this is a problem for parents, teachers, streamers and anyone who shares a screen. The frustration is that YouTube’s own controls do not clean up comments properly.

This guide explains why that happens and how to filter swear words out of YouTube comments in Chrome, in real time, with a lightweight browser extension.

Why YouTube’s own settings are not enough

YouTube offers Restricted Mode, which filters out the most mature content. It works on the videos themselves, but it does not scrub the language out of comment sections. A heavily moderated channel can still receive abusive replies and even on family-friendly videos the comments often contain swearing, slurs and unmoderated spam.

The comments are also loaded dynamically. They appear in batches as you scroll, which means any filter has to watch the page continuously rather than once at load time. A browser extension that monitors page text handles this naturally.

The browser filter approach

A profanity filter in the browser works at the text level. Instead of blocking YouTube or trying to rely on a per-platform setting, it watches the words on the page and masks the ones you do not want to see. The rest of the page, including every video and every piece of legitimate content, stays untouched.

Restricted Mode filters videos. A profanity filter cleans the text around them.

Because it runs in the browser, the same filter also covers search results, video titles, descriptions, on-screen text and every other website you open, not just YouTube.

Step 1: Install PureWord

Add PureWord from the Chrome Web Store. It is free, installs in a single click and requires no account. Once installed it starts scanning pages immediately, so YouTube comments are filtered as they load.

Step 2: Choose how masked words appear

By default PureWord masks filtered words with asterisks and keeps the original length, so the comment thread stays easy to follow. You can change this in the options:

• Asterisks (default): full masking.
• First letter: keeps the first letter and masks the rest.
• Custom character: use your own mask character.
• Blur: the word stays but is blurred and unselectable.

You can also replace profanity with clean alternatives instead of masking it. Filtered words can be clicked to reveal the original and clicked again to re-filter, so a term that matters in context is never lost.

Step 3: Handle usernames and slang

Comment sections have their own vocabulary. To keep up, you can:

• Add custom word pairs. Type word, replacement per line for any term, nickname or slang that bothers you.
• Block a word from any page. Select a word, right-click and choose Block "<word>". It is instantly masked everywhere.
• Turn the filter on or off per page with the popup toggle or the Ctrl + Shift + F shortcut.

Step 4: Lock it down for younger viewers

If children use the same browser, enable Parental Lock. It protects your settings with a password, disables the popup toggle and stops masked words from being clicked to reveal the original. A one-time recovery code is your way back in if you forget the password.

FAQ

Does it filter comments that appear when I scroll? Yes. PureWord watches the page and filters new text as it loads, including comment sections that load in batches.

Does it filter live chat? It filters the text on the page as it appears. Live chat scrolls quickly, so a fast-moving stream is best handled by the stream settings, with PureWord as the fallback for everything that loads in the page.

Does it slow down YouTube? No. Filtering runs locally in small chunks and does not affect video playback.

Is my data safe? Everything runs on your device. PureWord does not collect data, does not track you and does not send your browsing content anywhere. See the privacy policy for details.

Summary

YouTube’s Restricted Mode was never designed to clean up comment sections. A browser profanity filter is the reliable way to block swear words in YouTube comments and it does the same job on every other site. Install PureWord, pick your mask style and browse without reading language you did not ask for.

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