diff --git a/packages/docusaurus-utils/src/markdownUtils.ts b/packages/docusaurus-utils/src/markdownUtils.ts
index 074dbe277bc7f..4f98af4b708d3 100644
--- a/packages/docusaurus-utils/src/markdownUtils.ts
+++ b/packages/docusaurus-utils/src/markdownUtils.ts
@@ -55,15 +55,15 @@ export function createExcerpt(fileString: string): string | undefined {
   const fileLines = fileString
     .trimStart()
     // Remove Markdown alternate title
-    .replace(/^[^\n]*\n[=]+/g, '')
-    .split('\n');
+    .replace(/^[^\r\n]*\r?\n[=]+/g, '')
+    .split(/\r?\n/);
   let inCode = false;
   let inImport = false;
   let lastCodeFence = '';
 
   for (const fileLine of fileLines) {
     // An empty line marks the end of imports
-    if (!fileLine.trim() && inImport) {
+    if (fileLine.trim() && inImport) {
       inImport = false;
     }