diff --git a/.changeset/wicked-apes-remember.md b/.changeset/wicked-apes-remember.md
new file mode 100644
index 0000000000..c7bd079f4a
--- /dev/null
+++ b/.changeset/wicked-apes-remember.md
@@ -0,0 +1,5 @@
+---
+"@gitbook/openapi-parser": minor
+---
+
+Expose `isJson` and `isYaml` in OpenAPI parser
diff --git a/packages/openapi-parser/src/index.ts b/packages/openapi-parser/src/index.ts
index 8028a6e721..f2b4b5fc01 100644
--- a/packages/openapi-parser/src/index.ts
+++ b/packages/openapi-parser/src/index.ts
@@ -1,6 +1,6 @@
 export { parseOpenAPI } from './parse';
 
-export { dereference } from '@scalar/openapi-parser';
+export { dereference, isJson, isYaml } from '@scalar/openapi-parser';
 export type { AnyObject } from '@scalar/openapi-parser';
 export type * from '@scalar/openapi-types';
 export * from './error';