init

src/common/FilePreviewCommon/MarkdownHelper.cs

@@ -39,7 +39,7 @@ namespace Microsoft.PowerToys.FilePreviewCommon
             var softlineBreak = new Markdig.Extensions.Hardlines.SoftlineBreakAsHardlineExtension();
 
             MarkdownPipelineBuilder pipelineBuilder;
-            pipelineBuilder = new MarkdownPipelineBuilder().UseAdvancedExtensions().UseEmojiAndSmiley().UseYamlFrontMatter().UseMathematics();
+            pipelineBuilder = new MarkdownPipelineBuilder().UseAdvancedExtensions().UseEmojiAndSmiley().UseYamlFrontMatter().UseMathematics().DisableHtml();
             pipelineBuilder.Extensions.Add(extension);
             pipelineBuilder.Extensions.Add(softlineBreak);
 

src/modules/peek/Peek.FilePreviewer/Previewers/WebBrowserPreviewer/WebBrowserPreviewer.cs

@@ -130,6 +130,7 @@ namespace Peek.FilePreviewer.Previewers
                     }
                     else if (isMarkdown)
                     {
+                        IsDevFilePreview = false;
                         var raw = await ReadHelper.Read(File.Path.ToString());
                         Preview = new Uri(MarkdownHelper.PreviewTempFile(raw, File.Path, TempFolderPath.Path));
                     }