# Reading and Analyzing PDFs

The PDF view in the Keyline app is where you read a document and start a conversation
about it. This page covers the page view itself, how to navigate a long document, and how
Keyline reads the figures, diagrams, and tables on a page. The reading described here is
what the [Keyline API](/docs/keyline/api-quickstart) returns to your own interface.

## The PDF view

Opening a processed document shows the page images alongside a conversation panel. The
page view loads progressively as you scroll, so long documents open quickly instead of
waiting for every page to render at once.

## Page navigation

You can move through a document page by page, or jump directly to a specific page. When
an answer cites a page, following that citation takes you straight to it, so you never
need to scroll to find the source of an answer manually.

## Figures, diagrams, and tables

Keyline reads a page as a whole image and detects the semantic blocks on it: text, figures,
tables, and equations. A chart, a diagram, or a table is understood in context, so a
question like "what does the trend in this chart show" gets a real answer, and the block
itself is what comes back as the citation. This is the same reading that powers
[conversations and citations](/docs/keyline/conversations-and-citations) and
[multi-file search](/docs/keyline/multi-file-search).