C# Method for stripping Markdown tags from regular text

StripMarkdownTags.cs

public class StringHelper 
{
    /// <summary>
    /// https://github.com/stiang/remove-markdown/blob/master/index.js
    /// </summary>
    /// <param name="content"></param>
    /// <returns></returns>
    private string StripMarkdownTags(string content)
    {
        // Headers
        content = Regex.Replace(content, "/\n={2,}/g", "\n");
        // Strikethrough
        content = Regex.Replace(content, "/~~/g", "");
        // Codeblocks
        content = Regex.Replace(content, "/`{3}.*\n/g", "");
        // HTML Tags
        content = Regex.Replace(content, "/<[^>]*>/g", "");
        // Remove setext-style headers
        content = Regex.Replace(content, "/^[=\\-]{2,}\\s*$/g", "");
        // Footnotes
        content = Regex.Replace(content, "/\\[\\^.+?\\](\\: .*?$)?/g", "");
        content = Regex.Replace(content, "/\\s{0,2}\\[.*?\\]: .*?$/g", "");
        // Images
        content = Regex.Replace(content, "/\\!\\[.*?\\][\\[\\(].*?[\\]\\)]/g", "");
        // Links
        content = Regex.Replace(content, "/\\[(.*?)\\][\\[\\(].*?[\\]\\)]/g", "$1");
        return content;
    }
}