4 ms·
To put it reaaaaaly simple, a PDF is like a notion document (blocks and bricks) with a git-like object graph?
by SeriousM 9mo ago
To put it reaaaaaly simple, a PDF is like a notion document (blocks and bricks) with a git-like object graph?
- aidos 9mo agoHa! As if anything about Notion is simple. But yeah. It's all just objects pointing at each other. It's mostly tree structured, but not entirely. You have a Catalog of Pages that have Resources, like Fonts (that are likely to be shared by multiple pages hence, not a tree). Each Page has Contents that are a stream of drawing instructions. This gives you a sense of what it all looks like. The contents of a page is a stack based vector drawing system. Squint a little (or stick it through an LLM) and you'll see Tf switches to Font F4 from the resources at size 14.66, Tj is placing a char at a position etc. 2 0 obj << /Type /Page /Resources << /Font << /F4 4 0 R >> >> /Contents 5 0 R >> endobj 5 0 obj << /Length 340 >> stream q BT /F4 14.66 Tf 1 0 0 -1 0 .47981739 Tm 0 -13.2773438 Td <002B> Tj 10.5842743 0 Td <004C> Tj ET Q... endstream endobj I'm going to hand wave away the 100+ different types of objects. But at it's core it's a simple model.