# Stop Navigation by RegExp > Stop Navigations By specifiing Regular Expressions When a site that matches any of the defined Expressions is loaded, the navigation is stopped / prevented Canonical page: [https://chrome-stats.com/d/stopnavibyregex](https://chrome-stats.com/d/stopnavibyregex) ## Overview - **ID:** `stopnavibyregex` - **Platform:** Firefox - **Type:** Firefox add-on - **Status:** Removed - **Publisher:** igorlogius - **Category:** other - **Daily users:** 1 - **Rating:** 1.00 / 5 (1 ratings) - **Version:** 0.1.2 - **Last updated:** 2021-04-05 - **First published:** 2021-03-31 - **Size:** 36 KB - **Data as of:** 2022-08-18 - **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/stopnavibyregex/) ## Description Stop Navigations By specifiing Regular Expressions When a site that matches any of the defined Expressions is loaded, the navigation is stopped Usage:
  1. Install add-on
  2. Add a Regular Expressions for the Site/Sites you want to stop/prevent from loading into the add-ons options page
  3. Try navigating to the site/s
Notes:
  1. Permissions:
    1. "Display notifications to you", to display a notification when a rule matches and prevented navigation
    2. "Access your data for all websites", to use webRequestsBlocking with <all_urls>
    This add-on tries to use the minimal number of required permissions to successfully fullfill its intended purpose. If you think this could be improved please let me know by opening an issue (see. below) and i will try to look into it.
  2. Cost/Payment: This Add-on is and forever will be subscription and payment free to use for everyone however they like. If you are feeling generous you can send me a tip via my bitcoin address 35WK2GqZHPutywCdbHKa9BQ52GND3Pd6h4
  3. Stars/Reviews: If this this add-on was useful for you, please leave some stars or a review so others can find it more easily.
  4. Bugs, Suggestions and Requests: If you have any (e.g. a site it does not work but you think it should) or have improvement suggestions or feature request please open an issue here: https://github.com/igorlogius/stopNaviByRegEx/issues
## Permissions and access ### Permissions - `notifications` - `storage` - `webRequest` - `webNavigation` - `webRequestBlocking` - `` ## Safety - **Risk impact:** High risk impact - **Risk likelihood:** High risk likelihood ### Analysis details - Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site. - This extension is not longer available in the store > Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing). ## Similar extensions and apps - [Stop Open by RegExp](https://chrome-stats.com/d/stopopenbyregex) — 1 users - [Request RegEx Filter](https://chrome-stats.com/d/request-regex-filter) — 6 users, 4.60 / 5 - [RegEx Blocklist](https://chrome-stats.com/d/regex-blocklist) — 20 users, 4.60 / 5 - [Stop Redirecting Me](https://chrome-stats.com/d/stop-redirecting-me) — 14 users - [Simple Blocker](https://chrome-stats.com/d/simple-regex-blocker) — 189 users, 4.52 / 5 - [NoTrack - Block Redirection Tracking](https://chrome-stats.com/d/notrack) — 167 users, 4.67 / 5 - [No Swipe - Disable Swipe](https://chrome-stats.com/d/no-swipe-disable-swipe) — 62 users, 1.00 / 5 - [Native Access](https://chrome-stats.com/d/native-access) — 1 users - [Stop loading website](https://chrome-stats.com/d/stop-loading-website) — 2 users - [Regex Search](https://chrome-stats.com/d/regexsearch) — 1,656 users, 3.09 / 5 - [Rule AdBlocker](https://chrome-stats.com/d/rule-adblocker) — 8 users, 4.50 / 5 - [Redirect Me](https://chrome-stats.com/d/redirect-me-anywhere) — 2 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/stopnavibyregex)