LightPDF

LightPDF AI for Docs is an online AI document chatbot that lets you upload files and ask natural-language questions to get summaries and answers. Instead of manually searching through long documents, you can query what you need and receive results in clear formats like paragraphs, lists, and text-only tables.

It supports a wide range of sources, including PDFs (including scanned documents), Word (doc/docx), Excel (xls/xlsx), PowerPoint (ppt/pptx), EPUB, and TXT. You can also add a webpage by URL. For scanned documents, it uses OCR so you can extract text and continue chatting as you would with searchable files.

LightPDF is built for document analysis workflows, including creating notes and summaries, extracting information quickly, and generating tables from the data in your documents. You can ask follow-up questions to refine your understanding, and you can chat with multiple files in the same session for research and comparison.

For transparency, answers include references/navigation you can use to locate where the information came from. You can use it across Windows, Mac, Android, and iOS, in 100+ languages. Options include the web app plus a Chrome extension and a G Suite add-on; you can also download a Desktop App. LightPDF offers a free trial (“3 Days of Full Access, Completely Free”) and a free start option (“Get Started for Free”).

How do I use LightPDF to get summaries or answers from a document?

Upload a file, then ask a clear, specific question about what you want to learn. More precise prompts typically produce better results.

Which file types can I chat with in LightPDF?

You can chat with PDFs (including scanned files), Word (doc/docx), Excel (xls/xlsx), PowerPoint (ppt/pptx), EPUB, and TXT. You can also analyze a webpage by URL.

Can LightPDF analyze scanned documents?

Yes. It supports OCR for scanned documents, so you can extract text and continue having a Q&A conversation.

Does LightPDF support follow-up questions and multi-document chats?

Yes. You can ask follow-up questions, and you can upload more than one document and interact with them in a single chat session.

Do answers include sources or citations I can check?

Yes. Responses provide references/navigation that you can click to locate the relevant part of your document.

Is there a free way to try LightPDF?

Yes. LightPDF offers a free start option and a “3 Days of Full Access, Completely Free” trial.