This page demonstrates the different types of excerpts you can use with gatsby-transformer-remark

• Getting an Excerpt with a Separator

  This example uses a custom excerpt_separator.You can manually mark in your markdown where to stop excerpting—similar to Jekyll.

• A Default, 140 Character Excerpt

  This example uses the default pruning method. allows you to get an excerpt from a markdown post. By default, it will prune the first 140 characters, but you can optionally specify a in the graphql query.