Summarise Any Long Document or Article with AI
Quickly distil lengthy reports, articles, or email threads into concise, factual summaries using a free AI chat tool.
Tired of scrolling through a 20-page policy, a lengthy news article, or a long email thread? This guide will show you how to use a free AI tool to quickly get a short, reliable summary. In just a few minutes, you’ll be able to cut through the noise and focus only on what truly matters.
- A device with internet access: A computer, tablet, or smartphone is perfect.
- A free AI chat tool: We'll use general instructions that work for popular options like ChatGPT (find it at
chat.openai.com) or Gemini (atgemini.google.com). You'll need to create a free account and log in. - A document or article to shorten: This could be a webpage, a PDF where you can select text, an email thread, or any plain text.
- Rough total time: About 6 minutes to follow all the steps.
Copy your document text
First, open the document or article that you want the AI to summarise. Once it's open, you need to select all the relevant text. On a computer, you can often do this by clicking your mouse at the start of the text and dragging to the end, or by using a keyboard shortcut like Ctrl+A (Windows) or Cmd+A (Mac) to select everything. With the text highlighted, press Ctrl+C (Windows) or Cmd+C (Mac) to copy it to your clipboard. The clipboard is a temporary storage area on your device, like a hidden notepad, where copied items wait to be pasted.
You'll know it worked when the text is highlighted (often in blue or grey), and you've used the copy command. Although nothing visibly changes on your screen after copying, the text is now safely on your clipboard, ready for the next step. If you can't select text, try opening the document in a different program (e.g., a web browser for PDFs) or look for a "Select All" option within the application's menu.

Open your AI chat tool
Next, open your preferred free AI chat tool in your web browser or dedicated app. For instance, you might type chat.openai.com into your browser's address bar for ChatGPT, or gemini.google.com for Gemini. If you're using a phone or tablet, simply launch the app. If you're prompted, make sure you're logged into your free account.
You'll typically see the AI tool's main chat interface, which usually features a large, empty text box at the bottom of the screen. This is where you'll type your messages to the AI. The tool is now waiting for your instructions. If your screen looks different, or you see old conversations, look for a "New Chat" button, a plus sign icon (+), or a similar option to start a fresh, blank conversation.
You'll know it worked when you see an empty chat box, ready for you to type your first message, usually labelled "Message [AI name]..." or "Type your prompt here...".

Craft your summary request (Prompt)
Now, in the AI's chat box, you'll type your instruction for the summary. This instruction is called a prompt – it's like giving a clear job description to the AI. Be specific about the desired length, format (e.g., bullet points), and tone for your summary. A good prompt helps the AI understand exactly what you need.
You'll see the words you type appearing in the chat box. At this stage, the AI is just receiving your input, and you haven't sent anything yet. If the chat box shows pre-written suggestions, simply ignore them and type your own request. Being clear upfront saves time later.
You'll know it worked when your complete summary request is typed into the box, clearly visible, but you haven't sent it to the AI yet.

Paste your text and send
After typing your summary request, move your cursor to the end of your prompt, then immediately paste the long document text that you copied in Step 1. You can do this by pressing Ctrl+V (Windows) or Cmd+V (Mac). The pasted text will appear right after your instruction in the same chat box. Once both your prompt and the entire document text are in the box, press Enter or click the "Send" button (often a paper plane icon) to send everything to the AI.
You'll see your prompt and the long document text appear in the chat history. After a moment, the AI will start generating its response. This processing is called inference, which is when the AI "thinks" about your request and creates an output. If your document is extremely long (e.g., hundreds of pages), the AI might tell you it's too much text for its context window. The context window is like the AI's short-term memory – the amount of information it can "remember" and process at once. If this happens, you might need to break your document into smaller chunks and summarise them separately, or consider a paid plan, as free versions often have limitations.
[Now, paste your copied document text here, directly after the prompt.]"
You'll know it worked when you see your message disappear into the chat history, and the AI begins to type out its summary, usually appearing as new text below your input.

Check and refine the summary
Once the AI has generated its summary, carefully read through the bullet points it provided. Compare them against the original document to ensure they are accurate, don't miss any crucial details, and match the tone you requested. Sometimes, AI can "hallucinate" – meaning it confidently makes up information that isn't present in the original text, or misinterprets something. If anything feels off, needs clarification, or isn't quite what you wanted, simply type a follow-up question or instruction in the chat box.
You'll see the AI's initial summary in the chat. When you ask a follow-up question, your new prompt will appear, and then the AI will try to adjust its response based on your feedback. If the AI completely misunderstands or gives a poor response, you might need to try rephrasing your initial prompt more clearly or start a new chat conversation altogether.
You'll know it worked when the AI responds with an updated summary that addresses your feedback, making it more accurate and aligned with your specific needs.

Finalise and use your summary
Once you are completely happy with the AI's summary, it's time to make it your own. You can copy the final bullet points from the chat interface to your clipboard. Most AI tools allow you to highlight the text with your mouse (click and drag) and then use the copy command (Ctrl+C or Cmd+C). Some tools may also have a specific "Copy" button or icon next to the AI's response to make this easier.
You'll see the polished, accurate summary on your screen. After copying, the text is on your clipboard, ready to be pasted into another application, like an email, a report, or your personal notes. If there isn't an obvious "copy" button, simply highlight the AI's text and use your device's standard copy function.
You'll know it worked when the summary text is successfully copied (you can test this by pasting it into a simple text editor like Notepad or Notes) and you can then paste it into your desired application.

- Too vague a request: Asking for "a summary" without specifying length or format can result in a lengthy, unstructured response. The fix: Always be specific. Say "in three bullet points," "one short paragraph," or "a summary suitable for an executive" in your prompt.
- AI "hallucinations" or opinions: AI tools can sometimes confidently present incorrect information or add their own interpretations that aren't in the original text. The fix: Always include phrases like "keep the language neutral and factual; do not add your own opinions" in your initial prompt, and critically review the summary against the original document. Don't be afraid to ask for corrections.
- Text too long for the AI: Trying to summarise extremely long documents (e.g., an entire book or a very dense legal document) might hit the AI's context window limits, especially on free plans. The fix: Free AI tools usually have smaller context windows. For very long texts, break them into smaller, manageable sections and summarise each piece, or be aware that a paid plan might offer extended context windows.
Open any long email thread you’ve received in the last week
✦ Original step-by-step guide by AI World Co.'s AI editorial team. Written in plain language, reviewed for accuracy.
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