Smart Keyword Highlighter

Name: Smart Keyword Highlighter
Rating: 5 (1 reviews)
Author: Evren Ozkan

Smart Keyword Highlighter is a browser extension that improves reading focus by automatically highlighting uppercase and capitalized words on web pages.

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Features & Capabilities

Smart Highlighting: Automatically detects and highlights:
- Uppercase words (e.g., "IMPORTANT")
- Capitalized words (e.g., "Keyword")
- Mixed case and hyphenated words
CSS Custom Highlight API: Uses the modern CSS Custom Highlight API for high performance and native-feeling highlights without cluttering the DOM.
Adaptive Contrast: Intelligently adjusts highlight colors based on the background color (light or dark) to ensure readability.
Smart Exclusions:
- Ignores sentence starters to prevent over-highlighting.
- Skips specific tags like scripts, styles, inputs, code blocks, and links (anchor tags).
- Respects contenteditable elements.
Custom Highlighting:
- Define custom keywords with specific colors (e.g., yellow: Python, Java).
- Supports case-insensitive and whole-word matching.
Advanced Keyword Registry:
- Persistent Memory: Remembers highlighted keywords per-domain or globally (*.*).
- Retroactive Highlighting: If a keyword is discovered mid-sentence, it gets added to the registry. On subsequent visits (or retroactively on the same page), it will be highlighted even if it appears at the start of a sentence.
- Configurable Scope: Define maximum registry size and scope (global vs. domain-specific).
Customizable:
- Toggle extension on/off globally or per-site.
- Manage site exclusions/inclusions via the options page.
- Advanced Settings:
  - Minimum Words in Block: Configure the minimum word count for a block to be highlighted (default: 10).
  - Custom Colors: Adjust the background highlight colors and opacity for both light and dark modes.

User Growth & Download Statistics

Add-on

By:

Evren Ozkan

Daily users:

Rating:

5.00

(1)

Version:

1.5 Last updated: 2026-02-12

Version code:

6148103

Creation date:

2025-12-01

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

419.84KB

Email:

ad*****@evren.io

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-19

Compare stats and ranking:

Ranking

# 82,367 ▲ 296

Other rankings

#63 in keyword keyword 58 ▼ 2#206 in highlighter keyword 51 ▼ 2#216 in smart keyword 32 ▼ 8#236 in smartbook keyword 1 ▼ 13

For Developers

Monetize with App Pass Boost with Extension Booster

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:

Evren Ozkan

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/automatic-keyword-highlighter/

Email:

ad*****@evren.io

Website:

https://github.com/evrenesat/keyword_highlighter/

Permission Change History

2026-02-07: Version 1.3 → 1.4

Remove Permissions: activeTab

User Reviews

I’ve been using this add-on for a while and it’s honestly super helpful when reading long pages. It automatically highlights important keywords, so I can instantly spot what I’m looking for without constantly using Ctrl+F.

by Re*****, 2026-02-06

View all user reviews ›

Is Smart Keyword Highlighter 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.

Smart Keyword Highlighter requires some sensitive permissions that could impact your browser and data security. 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 ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
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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.

Smart Keyword Highlighter is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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