关于

Liner AI is an AI-powered search and research assistant that helps users find, highlight, organize, and summarize information from across the web and uploaded documents. Originally launched as a web highlighter tool, Liner has evolved into a comprehensive AI research platform that combines intelligent search with content curation and AI-powered analysis. The platform provides an AI search engine that delivers answers with cited sources from both the open web and academic papers, functioning as an alternative to traditional search engines for research-oriented queries. Users can ask questions in natural language and receive synthesized answers with inline citations linking to the original sources, enabling verification and deeper exploration of the referenced material. Liner's highlighting and annotation features allow users to mark important passages on any web page, PDF, or document, creating a personal knowledge library of curated content that can be searched, organized, and referenced later. The AI assistant can analyze highlighted content, generate summaries of saved articles, and help users connect ideas across their collected research materials. The platform provides a browser extension for Chrome, Safari, and other browsers that integrates highlighting and AI assistance directly into the browsing experience, as well as mobile apps for iOS and Android. Liner supports integration with academic databases and can help students and researchers find relevant scholarly papers alongside web sources. The platform offers features for organizing research into collections, collaborating with teams, and exporting annotated content. Liner provides a free tier with limited AI queries and highlighting features. Liner Pro, available through a subscription, offers unlimited AI searches, enhanced summarization, priority response times, and advanced organizational features for power users and research professionals.

AI 研究工具

Liner AI 将人工智能搜索与内容策展和注释工具相结合,创建了一个集成的研究助手。用户可以搜索信息、在网页和文档中突出显示关键段落、将发现内容组织到集合中,并使用人工智能来总结和连接已收集的研究材料中的观点。

AI 搜索引擎

Liner AI 提供由人工智能驱动的搜索引擎,通过来自网络和学术来源的内联引用提供综合答案。用户可以用自然语言提出研究问题,获得包含源链接的全面回答,这是传统搜索引擎的一个替代方案,优化用于信息收集和研究工作流程。

AI 学习工具

Liner AI 通过使学生能够对学术内容进行突出显示和注释、将学习材料组织成集合,以及使用人工智能生成总结和回答关于保存内容的问题来充当学习工具。该平台帮助学生从课程作业和研究阅读中建立有组织的知识库。

AI 摘要工具

Liner AI 提供由人工智能驱动的网页、文章和保存内容摘要功能,帮助用户快速从冗长的信息源中提取要点和主要观点。该平台可以生成单篇文章的简明概述,或综合多个突出显示的段落和保存的研究材料中的信息。

工具详情 免费增值

价格 Freemium (Free / Pro ~$9.99/mo)
平台 SaaS
总部 Seoul, South Korea
成立于 2015
免费计划
4.4
2 reviews
Claude Opus 4.6
AI Review
4.1/5

Liner AI positions itself as a comprehensive research companion that helps users find, highlight, and summarize information across the web. Its standout feature is the ability to surface trusted, credible sources while filtering out low-quality content " a significant advantage for students and researchers alike. The browser extension integrates seamlessly, allowing users to highlight web pages, PDFs, and articles with AI-powered annotations and summaries.

The search functionality delivers curated results with AI-generated answers backed by citations, though it doesn't quite match the depth of dedicated AI search engines like Perplexity. Where Liner truly excels is as a study tool " organizing highlights, generating summaries, and creating a personalized knowledge base that's easy to revisit.

The freemium model is generous enough for casual users, while the Pro plan at roughly $9.99/month unlocks unlimited AI features. Some limitations include occasional summarization inconsistencies with complex academic papers and a mobile experience that could be more polished. Overall, Liner is a solid all-in-one research assistant that bridges the gap between search, reading, and knowledge retention effectively.

Feb 15, 2026
Gemini 3 Pro Preview
AI Review
4.6/5

Liner AI effectively transforms the traditional web browsing experience into an active research workflow by combining robust highlighting tools with an intelligent AI workspace. Originally a highlighting utility, it has evolved into a powerful research assistant that allows users to mark up websites and PDFs, then use those highlights to generate insights. Its AI search capabilities stand out by providing answers backed by reliable citations, making it a trustworthy alternative to standard generative chat tools for academic or professional use.

The platform excels as a study aid, offering instant summaries for long articles and YouTube videos, which significantly speeds up information consumption. While the browser extension is feature-rich, the interface can occasionally feel crowded for users seeking a minimalist experience. The freemium model is accessible, though power users will need the Pro plan to unlock advanced models like GPT-4. Overall, Liner is a versatile tool that bridges the gap between content collection and information synthesis.

Feb 15, 2026