Semantic Highlight

Search and highlight relevant words by meaning, adding an AI reading filter to the webpage — helping you read, not reading for you.

— AI summaries are useful, but sometimes you just want to read the original. Long articles can be exhausting. You don't want to read every paragraph, but scanning for the parts you want is just as tiring. Traditional Ctrl+F only matches exact keywords. Semantic Highlight doesn't replace your reading. Instead, it works like an AI reading filter: describe what you're looking for, and it highlights the relevant parts directly in the original text. Great for long-form reading such as novels, research papers, technical documentation, and more. Semantic Highlight is an AI-powered semantic search and highlighting tool — a smart upgrade to the browser's built-in Ctrl+F / Cmd+F. • Finds all semantically relevant content on the page, with minimap navigation
 • Highlights relevant words at the word level, with color intensity indicating match strength
 • Uses cloud-based AI models for semantic analysis. Compared with traditional embedding-based methods, it provides more precise word-level matching, though it is slower
 • Configurable shortcut (Ctrl+Shift+F, or Cmd+Shift+F on Mac) for quick access
 • Matching quality, performance, and user experience are continuously improving Privacy: No personal information or page content is ever stored. The project is open source, so anyone can inspect how it works and how privacy is protected. ———————— 根据含义搜索并高亮原文中的相关词语，给页面加上一层 AI 阅读滤镜：帮你阅读，而不是替你阅读。 — AI 总结很有用，但有时候就是想阅读原文。 文章长的时候，不是每一段都想读，但是靠肉眼硬扫又很累。传统的Ctrl-F只是字面匹配，不好用。 Semantic Highlight 不替代你的阅读，而是像一层 AI 阅读滤镜：描述你想找的内容，直接亮起原文中相关的地方。 很适合阅读长篇文章，比如小说、论文、技术文档等。 Semantic Highlight 是一款 AI 驱动的语义搜索与高亮工具，可作为浏览器 Ctrl+F / Cmd+F 的智能升级版。 * 按语义查找页面中的所有相关内容，并可以通过小地图跳转 * 精确到词级高亮，根据匹配程度显示不同颜色深浅 * 基于云端 AI 模型进行语义分析：相比常见的嵌入向量方法，可实现更精细的词级匹配，但速度也更慢一些 * 可配置 Ctrl + Shift + F（Mac 为 Cmd + Shift + F）一键打开 * 匹配效果、速度和使用体验都在持续优化中 隐私说明：不会存储任何个人信息或网页内容。代码已开源，任何人都可以查看隐私保护逻辑。