Chat with PDF

Chat with PDF started as a simple promise: stop reading a dense PDF page by page and just ask it questions. The product has since grown into Paperguide, an AI-native research platform, and the old chatwithpdf.ai address now redirects there. The original idea survives as one of the platform's core features, so you can still drop in a paper, a set of papers, or your own library and hold a conversation with the content.

Around that foundation sits the rest of the research workflow. An AI search engine answers plain-language questions from a large corpus of peer-reviewed papers with citations in place. A reference manager imports from Zotero or Mendeley and keeps metadata, notes and annotations in one place. A research agent compares studies and maps a field, data extraction turns many papers into a cited table, and an AI writer produces citation-grounded drafts and themed literature reviews.

The platform leans hard on traceability. Each answer and extracted value is meant to point back to the exact sentence in the source, which matters enormously for literature reviews, journal submissions and evidence work. Pricing runs from a genuinely useful free tier up through per-seat plans for individuals, teams and institutions, with a separate emphasis on auditable systematic reviews and PRISMA reporting.