Question: Can you suggest a tool that can summarize long articles and documents while preserving the main content?

ChatDOC is a good option for anyone who wants to quickly analyze and summarize a variety of documents, including PDFs, DOCs and EPUBs. Its features, including instant answers, detailed AI analysis and the ability to chat with multiple documents, make it a good AI assistant. The tool also has a browser extension to upload documents and answers that include citations, and it's good for students, professionals and businesses.

Coral AI is another general-purpose tool good for analyzing documents. It can handle more than 90 languages and offers features like summarizing documents, answering questions, translating text and generating citations. It's good for anyone who needs to quickly analyze books, legal briefs, research papers and other documents, and who wants to get a better handle on their work so they can focus on higher-level tasks.

If you're looking for a tool that's geared specifically for PDFs, AI PDF Summarizer can generate a summary of a long document almost instantly. It can extract information, main ideas and even deeper analysis, and it works in multiple languages. It's good for academic research, business, finance and content creation.

Last, ChatPDF is a more powerful tool for understanding and asking questions of PDFs. It can handle multi-file chats, citations and answers in any language. It's good for students, researchers and professionals who need to quickly ask questions and get a summary of a big pile of PDFs.