几百页的合同或论文不想通读？上传后直接用中文提问，AI基于文档内容作答并指出依据所在页码——像和一位读过全文的助手对话。
Upload a PDF and ask questions about its content
Upload a PDF to start chatting
Chatting with a PDF sounds generic, but the concrete use cases are where the time savings show up. Here are the four patterns we see most.
Skim a 40-page paper in 2 minutes: ask for the methodology, key findings, and limitations separately. No more scrolling through dense methodology sections hunting for one number.
Ask specific questions about contract clauses — termination windows, liability caps, jurisdiction. The assistant cites the page so you can jump straight to the paragraph for review.
Upload a PDF in German, ask questions in English, get answers in Spanish. Useful for international business teams who receive documents in a language they don't fully speak.
Someone emailed a PDF — do you need to actually read it? Chat with it for 30 seconds, get the gist, and decide whether it's worth a closer look.
上传PDF文档
输入你的问题
AI基于文档内容回答
继续追问深入细节
无隐藏费用，无需信用卡。基础工具永久免费。
TLS加密传输，欧盟服务器处理，文件一小时内自动删除。
大多数操作几秒内完成，无需排队。
直接在浏览器中使用，不占用设备空间。
电脑、手机、平板均可流畅使用。
文件绝不用于AI训练，绝不与第三方共享。
回答严格基于文档内容并标注出处页码；文档中没有的信息会明确告知。
支持，中英文档都可以，也可以用中文提问英文文档。
不会。欧盟服务器处理，一小时自动删除，绝不用于AI训练。
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