Side Reader is a Chrome extension that makes it effortless to read and chat with any PDF directly on the ChatGPT, Claude, and DeepSeek websites.
Instead of juggling separate tabs or paid tools, Side Reader lets ChatGPT, Claude, and DeepSeek offer the same capabilities as PDFAI and ChatPDF, all within the interface you already use.
Your PDF opens in a handy sidebar next to the conversation, so you can follow along while you interact with the document: summarize key points, translate passages, explain tricky sections, and more.
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