Block or Highlight Search Engine Results Firefox

Block or Highlight Search Engine Results

By: pistom
Filter your search engine results. Block unwanted results and highlight the favorite ones. It works with Duckduckgo, Google, Yahoo, Bing, Startpage, Ecosia, Yandex, OneSearch and Baidu. https://youtu.be/U_Ctx4Gq-lw
Block or Highlight Search Engine ResultsBlock or Highlight Search Engine ResultsBlock or Highlight Search Engine Results
Download Install

Features & Capabilities

The "Block or Highlight Search Engine Results" Chrome extension empowers users to tailor their search experience by filtering results across multiple popular search engines such as Google, DuckDuckGo, Bing, Yahoo, and more. It allows users to block unwanted search results and highlight preferred ones, improving search efficiency and relevance. Whether you want to highlight trusted sources like Wikipedia or hide distracting sites like Facebook, this extension adds a layer of control to your online searches. Compatible with numerous search engines including Startpage, Ecosia, Yandex, OneSearch, and Baidu, it offers versatility for diverse browsing preferences. Simply set your filters to mark, highlight, hide, or block specific domains and enjoy a cleaner, more focused search experience. Reach out if you use another search engine for added support.

User Growth & Download Statistics

Manifest V2 Add-on Privacy & Security
By:
pistom
Daily users:
1,195 -14
Rating:
4.16
(81)
Version:
4.6.1 Last updated: 2025-03-24
Version code:
5916140
Creation date:
2018-11-24
Risk:
Very high risk impact Low risk likelihood
Permissions:
Content scripts matches:
  • *.google.com
  • *.google.ac
  • *.google.ad
  • *.google.ae
  • *.google.com.af
  • *.google.com.ag
  • *.google.com.ai
  • *.google.al
  • *.google.am
  • *.google.co.ao
    • See more
Size:
349.95KB
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-17
Compare stats and ranking:

Ranking

# 2,964 ▼ 2
Other rankings
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Other platforms

Chrome
Highlight or Hide Search Engine Results (v4.6.1)
1,000 3.70 (43)
Edge
Highlight or Hide Search Engine Results (v4.0.0)
1,193 4.20 (22)

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
pistom
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/hohser/
Website:
https://github.com/pistom/hohser

Permission Change History

2024-10-30: Version 4.5.0 → 4.6.0
Add Permissions: contextMenus

User Reviews

Users generally praise Block or Highlight Search Engine Results for effectively removing unwanted sites from search results by domain, and for offering both hiding and highlighting options. It works with major engines (Google and DuckDuckGo) and can handle large blocking lists, which many find life-changing for research. However, the experience is not flawless: blocking is not universal across engines; some searches (notably Startpage) don’t get blocked reliably. There are limits on how many pages can be blocked and potential performance issues as the block list grows, plus occasional partial hiding. Android support and ongoing maintenance have been noted as concerns.
Pros
  • Effectively blocks/hides results by domain across Google and DuckDuckGo, cleaning up search results.
  • Offers both blocking and highlighting options for domains, giving flexible filtering.
  • Capable of handling large blocking lists (thousands of sites).
  • Significantly improves research workflow and reduces clutter, often described as life-changing.
Cons
  • Engine compatibility issues: Startpage (and some newer engines) are not reliably blocked.
  • Blocking is incomplete: some results (top or sponsored) may still appear.
  • Block list size limits and performance issues as the list grows (sync can choke).
Recent reviews
by Fi*****, 2026-04-03
Too many entries cause Mozilla Sync to choke, but if Mozilla Sync isn't part of the equation or you're willing to work around that limitation, it'll happily sort thousands of sites!
by Ba*****, 2026-03-06
It worked before. Not working anymore.
by Ko*****, 2025-12-22
View all user reviews ›

Is Block or Highlight Search Engine Results Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Block or Highlight Search Engine Results requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ******* ****** ** *** ********* ******** *********** ********** ********** ********** ******* ******* ******* ********** ********** ****** ******* ********** ********** ******* ********** ********** ******* ********** ********** ********** ******* ********** ********** ******* ******* ******* ********** ********** ****** ********** ******* ********** ******* ********** ********** ********** *********** ********** ********** ********** ****** ********** ********** ********** ******* ****** ******* ********** ******* ********** ********** ********** ********** ********** ******* ********** ******* ********** ******* ********** ******* ********** ******* ********** ********** ********** ********** ********** ********** ******* ******* ********** ********** ********** ********** ******* ********** ******* ********** ********** ********** ********** ****** ********** ********** ****** ********** ****** ********** ********** ********** ********** ******* ********** ****** ****** ********** ********** ****** ******* ********** ********** ******* ******* ********** ********** ****** ********** ********** ********** ******* ****** ********** ********** ********** ********** ********** ******* ********** ********** ******* ********** ********** ********** ******* ******* ****** ******* ********** ******* ******* ******* ********** ********** ******* ********** ********** ****** ******* ******* ******* ******* ******* ********** ******* ********** ******* ********** ********** ******* ******* ********** ********** ********** ********** ******* ******* ********** ********** ******* ********** ********** ********** ******* ********** ********** ********** ********** ********** ******* ********** ********** ****** ******* ********** ********** ********** ********** ********** ******* ********** ******* ****** ******* ****** ****** ******* ****** ******* ****** ********** ****** ******* ********** ********** ****** ****** ****** *************** ********** ********** ********* ************** *********** ********** *********** ************** ********* ********** ********* *********
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Block or Highlight Search Engine Results has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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