improve graph image quality

improve graph image quality

diff --git a/plugin.rb b/plugin.rb
index 9a6bd80..bb0df25 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -28,7 +28,7 @@ after_initialize do
         graph_title = Nokogiri.parse(svg_graph).at("//comment()[contains(.,'Title')]").content.match(/Title:\s(?<title>.+)\sPages:/)[:title]
         filename = graph_title != "%0" ? graph_title : File.basename(tmp_png.path)
 
-        Discourse::Utils.execute_command('convert', tmp_svg.path, tmp_png.path)
+        Discourse::Utils.execute_command('convert', '-density', '300', tmp_svg.path, tmp_png.path)
 
         upload = UploadCreator.new(tmp_png, filename).create_for(-1)

GitHub sha: db3a3d46