Understand the PDF without leaving the page

PDF Lens is an AI PDF reader. Highlight the sentence you don’t get. The explanation opens beside the paper, so you keep reading. Ask questions, search the file, and follow page citations.

How it works

Read the PDF as a page, not as a chatbot transcript.
Select a sentence. Lens explains it beside the document (Explain, Teach, and the rest of the popup).
Search the file. Hits jump you to the line. Search does not use the AI meter.
Ask with Paper Chat. Answers come from retrieved passages and may include [p. N] citations.

Who it is for

Anyone stuck on a difficult PDF: research papers, technical chapters, reports. If you wanted a scan-to-text OCR tool, this is not that — PDF Lens needs a selectable text layer.

Pricing and trust

Free: 10 AI actions per day. Pro: ₹299/month in India or $9.99/month elsewhere, with a monthly allowance (2,500) and a daily cap. Hosted answers use an economical model. Passages, not your whole account, go to the model provider. Privacy · Terms · Pricing.

AI PDF reader · Chat with a PDF · PDF summarizer · AI for research papers · Reading guides · ChatPDF alternative