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Pieces of content on

What is a block?

Blocks are the individual pieces of content on
A view of blocks in a grid
A block can be:
  • a file (like an image, a PDF, a text file, etc)
  • a URL (link to a webpage, a YouTube video, a SoundCloud link, etc)
  • a piece of raw text

Why are blocks special?

When a block is saved to, we try to extract as much metadata as we can from it.
For example:
  • If the block is an image, we will save the original source, extract any text, get the dimensions, etc.
  • For webpages and links, we extract the text of the page, take a screenshot, etc.
Blocks can also be connected to an infinite number of channels, which means that a public block on accumulates context over time (see Connections).