Tired of searching for key information in long web pages? Hilight Lens is a powerful and lightweight browser extension designed to help you instantly lock onto keywords.
Whether reviewing massive documents, tracking technical terms, or marking names and places in foreign books, it helps you build a visual index within the chaotic information flow, offloading cognitive burden and making deep reading effortless.
Highlight an unlimited number of keywords simultaneously, with independent colors for each group to build a clear visual index.
Add keywords on any page and they will instantly sync and highlight across all websites and tabs.
Changes to keywords or colors apply immediately to all open pages without requiring a manual refresh.
Powered by efficient algorithms, maintaining high performance and smooth browsing even with hundreds of active keywords.
Select any text and right-click to instantly highlight it across the entire web for a seamless experience.
Features beautiful rotating color presets, while also allowing full customization of background and text colors.
All processing happens locally in your browser. No data is ever collected or uploaded, ensuring your reading privacy.
Interface supports English, Chinese, Japanese, Korean, German, French, and Spanish for global accessibility.
Click the extension icon in the toolbar, enter a keyword in the management panel, and add it instantly.
Select any text on a webpage, right-click, and choose "Highlight..." to apply it across all sites immediately.
Modify colors, toggle keywords on/off, or delete them directly in the popup panel to build your visual map.
Once added, highlights are automatically applied to all open or newly opened tabs across the web.
It is based on the logic of "Cognitive Unloading," converting "logical identification" into "visual intuition" through color coding. This frees your brain from the low-level task of identifying keywords, allowing you to focus on higher-level logical thinking.
It excels in professional work (reviewing documents), language learning (marking new words), deep reading (tracking relationships), and information tracking (capturing specific metrics) where filtering key content from massive information is required.
Yes. You can add and highlight an unlimited number of keywords simultaneously, with independent color definitions for each keyword or group to build a clear visual index.
Yes. Hilight Lens supports 'Web-wide Synchronized Highlighting'. Keywords added or modified on any page will instantly apply to all open websites and tabs without needing a manual refresh.
Yes! We use efficient algorithms and instant response technology. Whether it's dynamically loaded content on sites like Twitter or Reddit, or real-time tab updates, keyword highlighting takes effect in milliseconds.
Absolutely. The extension comes with beautiful preset color schemes that rotate automatically, and you can also freely define custom background and text colors for each keyword group in the management panel.
By default, it is case-insensitive. Whether you enter a keyword in uppercase or lowercase, the extension will automatically match all forms of the word on the page (e.g., 'Apple' and 'apple') to ensure no key information is missed.
Yes, but you need to enable permission manually. Go to your browser's extension management page, find 'Hilight Lens', click 'Details', and check 'Allow access to file URLs' to use it on local files.
Not at all. Simply put, the Service Worker is like the extension's 'background butler.' It goes to sleep to save your computer's memory and power when there's no work to do. As soon as you use the extension, it wakes up instantly. The 'inactive' status just means it's currently napping, not broken. It doesn't affect any functionality.
Completely. Hilight Lens adheres to the principle of 'Local Processing'. All your keywords and settings are stored only locally in your browser. We do not collect or upload any user data.
Yes, our roadmap includes: support for importing/exporting keyword libraries, introducing regular expressions for advanced fuzzy matching, and adding site-specific blacklists/whitelists.
We are a user-driven project. If you encounter a bug or have a great idea, please visit our GitHub page to submit an issue or participate in discussions: https://github.com/pi-qiyuan/hilight-lens
Initial release of Hilight Lens.
🌟 KEY FEATURES
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● Web-wide Highlighting: Synchronize keywords across all websites and tabs.
● Visual Intuition: Offload cognitive burden with smart color coding.
● Instant Response: Highlights apply in real-time without page refresh.
● Privacy First: 100% local processing with no data collection.
This extension is open source and the code is available on GitHub. Contributions are welcome!
View Source Code on GitHub