7 AI tools that answer questions directly from PDF files

Whether for study or work, going through long PDFs to find any particular piece of information is the most tedious thing to do. However, you can make things easier by using AI tools to answer questions from PDF files.

Most of these are supported by GPT and work just like ChatGPT. However, general can provide answers from the PDF file you upload. Here are the top 7 tools for this purpose.

1. AskYourPdf

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AskYourPdf is a ChatGPT-enabled tool that allows you to upload PDF files and get relevant information within minutes. After uploading your document, enter a question about any content in the PDF file and get the correct answer.

By using various prompting techniques such as assigning teacher roles, you can use AskYourPdf to understand the complex topics discussed in your files. Best of all, the tool is completely free.

AskYourPdf is also available as a ChatGPT extension but you must be a ChatGPT Plus user to install the plugin. While this tool works well, you'll have to learn how to write effective reminders for best results.

2. ChatPDF

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ChatPDF is another tool that allows you to chat with your PDF files. To get started, you can either upload a PDF from your device or fetch a PDF from a URL. It also has a search feature that allows you to find PDF files from the Internet.

This tool uses GPT 3.5 and supports many languages. Although it cannot read images in PDF files, it can somewhat understand tabular data. ChatPDF saves chat history and allows you to export it. Just like AskYourPdf, it features document sharing via link.

3. Documind

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The biggest advantage of Documind is that you can search information from multiple PDF files together.

First, this tool allows you to upload documents, individually as well as in bulk. You can then visit the dashboard and start asking questions. Documind will scan all documents for answers. Besides allowing you to find specific information from your PDF files, Documind can also create summaries of long documents.

Another interesting use case of Documid is that you can upload a PDF file to create your own chatbot and add it to your website.

4. LightPDF

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LightPDF has dozens of tools to convert, protect and edit PDF files. One of them is the AI ​​chatbot to read PDF files. This tool not only provides quick answers to your questions, but also creates summaries, outlines, and tables from uploaded documents.

Perhaps one of the most useful features of LightPDF is the display of the page number of the file from which the information was extracted, so you can quickly check back. While LightPDF works seamlessly in the browser, it also has desktop and mobile apps.

5. PDF.ai

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PDF.ai has a pretty clean but functional interface. It splits the tab into two columns, showing your document on one side and the chatbot on the other. Similarly, from the dashboard, you can access all your uploaded documents and chat history.

For each answer, PDF.ai mentions the source (page number of the file), clicking will take you directly to that particular page. You can adjust the display and zoom of the file to review the document yourself. PDF.ai is a great, user-friendly tool, especially if you want to view documents yourself instead of relying solely on AI.

6. FileGPT

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As the name suggests, FileGPT answers questions from many different file types, not just PDFs. These include Docs, websites, audio, and even video. The paid versions also support handwritten text and unstructured PDFs.

Like Documind, FileGPT allows you to ask questions from multiple files at once. Better yet, you can create a chat with a set of files and ask questions from there. This way you can keep all uploaded files but include or exclude specific files from any chat. So it's an ideal AI tool for researchers who want to search multiple files at once.

7. ClarifyPDF

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ClarifyPDF allows you to upload files up to 10MB and ask questions from it, in addition to creating summaries. However, it only supports the English language.

Unlike other tools listed here, ClarifyPDF allows you to share chat messages as well as documents with friends via a single link, promising to keep your chat history forever.

Thanks to these tools, finding relevant information from a 100-page PDF is as easy as sending a few messages to a friend. These tools search the entire PDF file and provide concise, relevant answers, just like ChatGPT responses.

Kareem Winters

Update 24 July 2023