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Convert your WordPress post to markdown with a click of a button! 
This plugin helps you cross-post to Dev.to by generating the markdown for a Dev.to post. 
This plugin adds a button to the frontend for admin users. When you click the button, the post is converted to markdown via a wp-json API.
Requires php-dom on server:
sudo apt-get install php-dom

Post to Dev.to

Convert your WordPress post to markdown with a click of a button!

mitchmac

The plugin creates zip files containing posts converted to Markdown. A WP-CLI command exists to handle exporting sites with a large amount of content.
<ul>
<li>Move WordPress content to Gatsby-friendly Markdown.</li>
<li>Customize the export! Remap and restructure exported fields.</li>
<li>CLI: Avoid PHP timeouts by using the command line with WP-CLI.</li>
<li>CLI: Export progress bar (great for large sites)!</li>
</ul>
<blockquote>
Reminder: always keep a backup of the WordPress database and files in case your export doesn’t work as expected!
</blockquote>
<h3>Working with Gatsby</h3>
If you’re just getting started with Gatsby, we recommend experimenting with a Markdown based Gatsby starter like <a href="https://github.com/tinacms/tina-starter-grande" rel="nofollow ugc">Tina Grande</a>. Installation is as easy as:
<pre><code>git clone https://github.com/tinacms/tina-starter-grande.git

cd tina-starter-grande

yarn install && gatsby develop
</code></pre>
Then copy your exported WordPress Markdown into the <code>content</code> directory or point the wp gatsby-markdown-export command at the content directory.
Want to port your WordPress or HTML theme to Gatsby? Checkout <a href="https://www.gatsbyjs.org/docs/porting-an-html-site-to-gatsby/" rel="nofollow ugc">Porting an HTML Site to Gatsby</a> for tips.
<h3>Command Line Usage</h3>
The command line functionality uses WP-CLI to interact with WordPress. <a href="https://wp-cli.org/#installing" rel="nofollow ugc">WP-CLI is easy to install</a> if you haven’t already.
Once it’s installed, you can export content to a directory like this:
<pre><code>wp gatsby-markdown-export --directory=/example/gatsby-starter/src/content
</code></pre>
All CLI arguments are optional.
 Option 
 Description 
 Default value
 <code>--help</code> 
 get help
 <code>--directory=</code> 
 export output directory 
 random temp directory
 <code>--post_types=</code> 
 post types to export, see: https://developer.wordpress.org/reference/classes/wp_query/#post-type-parameters 
 page,post
 <code>--post_status=</code> 
 post status to export, see: https://developer.wordpress.org/reference/classes/wp_query/#status-parameters 
 any
 <code>--fields_to_markdown=</code> 
 fields to convert to Markdown 
 excerpt
 <code>--excluded_front_matter=</code> 
 fields to exclude from front matter
 <code>--post_date_format=</code> 
 format for post publish date, see: https://www.php.net/manual/en/function.date.php 
 c
 <code>--upload_dir=</code> 
 directory in the export to copy WordPress uploads 
 uploads
 <code>--remap_fields=</code> 
 remap front matter field names, example: find1,replace1;find2,replace2
 <code>--fields_to_array=</code> 
 convert single value front matter fields to arrays
 <code>--include_private_fields=</code> 
 private post meta fields to include (they start with _)
 <code>--skip_copy_uploads</code> 
 flag, skips copying WordPress uploads to the export
 <code>--skip_original_images</code> 
 flag, skips the use of original dimension images
 <code>--skip_enforce_charset</code> 
 flag, skips use of blog_charset for the XML charset
 <code>--create_type_directory</code> 
 flag, creates directories based on post type

WP Gatsby Markdown Exporter

Export WordPress content to Markdown for GatsbyJS.

Post to Dev.to vs WP Gatsby Markdown Exporter