AI Summarizer for PDF – Word, PowerPoint and Text Too
Chat shortcut: /summarize
Upload a document with your account, choose the length and let the AI summarizer condense the PDF: you get the most important statements in clear bullet points and can ask targeted follow-up questions in the same chat.
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The essentials from long documents
A 60-page report, a contract with fine print, lecture notes before the exam or a technical article in another language: often you first want to know what it is about and which points matter before you spend time on every page. The summary gives you exactly this overview in bullet points.
You upload the file and choose how detailed it should be: "Short" for a few key statements, "Medium" for the most important sections, "Detailed" for a structured overview with details. In the optional task field you tell the AI what to look out for, for example deadlines, costs, methodology or open points. With very long documents, it works from the most relevant excerpts.
The result appears in a chat. There you can ask follow-up questions, go deeper into individual chapters, have terms explained or request a shorter version for an email. For web pages there is a separate tool, the Article summarizer; if you just want to ask questions about the document, use Chat with PDF.
How it works
- 1
Upload a document
Sign in and select a PDF, Word (DOCX), Excel (XLSX), PowerPoint (PPTX) or text document up to 30 MB, or drag it into the box.
- 2
Choose the length
Decide between Short, Medium or Detailed, depending on how much overview you need.
- 3
Add a task (optional)
Add what matters to you, for example "only results and recommendations" or "tasks with deadlines".
- 4
Summarize and ask
Start the run, read the bullet points and ask follow-up questions about the document in the same chat.
Typical uses
Studying and exams
Condense lecture notes and textbook chapters to key statements and then ask comprehension questions.
Contracts and quotes
Pull out the term, cancellation terms, costs and deadlines, then check those passages in the original.
Technical articles and studies
Research question, method and results in bullet points, also from papers in other languages.
Reports and minutes
Compile decisions, tasks and open points from long documents for the team.
Manuals and guides
Summarize only the section that concerns you, such as setup or troubleshooting.
Good to know
- Input: PDF, Word (DOCX), Excel (XLSX), PowerPoint (PPTX) or text file, up to 30 MB and 4 million characters; one file per run. The text is read; embedded images and charts are left out.
- Three lengths (Short, Medium, Detailed) plus an optional task field for focus, form or language.
- Very long documents are summarized via matching excerpts, not page by page.
- The result lives in a chat; there you can keep asking, shorten or go deeper.
- The upload requires an account. Billing is based on actual usage in tokens per run, depending on document length and chosen length; no subscription needed.
- The text goes to the chosen AI provider; with long documents, text sections are additionally indexed at OpenAI for searching. The document stays in the chat until you delete it; uploads without a chat are deleted after two days.
- Also available in the chat with the /summarize shortcut.
Frequently asked questions
Which files can I summarize?
PDF, Word (DOCX), Excel (XLSX), PowerPoint (PPTX) and text files up to 30 MB. Very long documents are summarized via matching excerpts, not word for word; text extraction stops after 4 million characters.
How do I control what goes into the summary?
Via the length (Short, Medium, Detailed) and the optional task field. There you can enter things like "in three sentences", "only the payment terms", "tasks and deadlines" or "key figures as a table".
Does it work with scanned PDFs?
It works best with documents that have a text layer, meaning text you can select. ChatX first runs text recognition (OCR) on scanned PDF pages, up to 50 image pages per document; with poor scans, check the result.
How reliable is the summary?
It usually captures the key statements but may leave out nuances or shorten details. For contracts, medical or financial documents, read the decisive passages in the original and ask specifically in the chat.
What language is the result in?
Normally in the language you use the site in. If you want another language, write it in the task field, for example "summary in Spanish".
Can I ask questions about the document afterwards?
Yes. The summary appears in a chat that keeps the document in context. Ask about individual sections, terms or figures, or use "Chat with PDF" right away if you need answers rather than a summary.
What happens to my file?
The text is sent to the chosen AI provider for analysis; with long documents, text sections are additionally indexed at OpenAI for searching. The document stays in the chat until you delete the chat; uploaded files that do not end up in any chat are deleted after two days. Upload confidential documents only if that is acceptable for you and your employer.