# Parse a Substack Newsletter Feed to JSON

**Use case:** 

Latest posts from any Substack as clean JSON — titles, dates and full content in Markdown.

## Input

```json
{
  "feedUrls": [
    "https://www.lennysnewsletter.com/feed"
  ],
  "maxItemsPerFeed": 100,
  "contentFormat": "markdown",
  "timeoutSecs": 30
}
```

## Output

```json
{
  "feedTitle": {
    "label": "Feed",
    "format": "text"
  },
  "title": {
    "label": "Title",
    "format": "text"
  },
  "author": {
    "label": "Author",
    "format": "text"
  },
  "publishedAt": {
    "label": "Published",
    "format": "text"
  },
  "link": {
    "label": "Link",
    "format": "link"
  },
  "summary": {
    "label": "Summary",
    "format": "text"
  }
}
```

## About this Actor

This example demonstrates how to use [RSS Feed Reader API — Parse RSS, Atom & JSON Feeds](https://apify.com/fetchbase/rss-feed-reader) with a specific input configuration. Visit the [Actor detail page](https://apify.com/fetchbase/rss-feed-reader) to learn more, explore other use cases, and run it yourself.