Jekyll JSON template

site.json

---
layout: null
---
[
{% for post in site.posts %}
  {
    "title"    : "{{ post.title }}",
    "url"     : "{{ post.url }}",
    "date"     : "{{ post.date | date: "%B %d, %Y" }}",
    "content"  : "{{ post.content | strip_html | strip_newlines | escape_once }}"
  } {% if forloop.last %}{% else %},{% endif %}
{% endfor %}
]

This generates valid JSON from Jekyll posts when Jekyll runs. strip_newlines is essential in the content field, but strip_html is not. To return safe HTML instead of a raw string, do this:

"content" : "{{ post.content | strip_newlines | escape }}"