diff --git a/src/shared/components/post/post-form.tsx b/src/shared/components/post/post-form.tsx
index 3e69976d..90bd57ef 100644
--- a/src/shared/components/post/post-form.tsx
+++ b/src/shared/components/post/post-form.tsx
@@ -23,6 +23,7 @@ import {
 import {
   archiveTodayUrl,
   ghostArchiveUrl,
+  postMarkdownFieldCharacterLimit,
   relTags,
   trendingFetchLimit,
   webArchiveUrl,
@@ -477,6 +478,7 @@ export class PostForm extends Component<PostFormProps, PostFormState> {
               allLanguages={this.props.allLanguages}
               siteLanguages={this.props.siteLanguages}
               hideNavigationWarnings
+              maxLength={postMarkdownFieldCharacterLimit}
             />
           </div>
         </div>
diff --git a/src/shared/config.ts b/src/shared/config.ts
index 70019742..69039532 100644
--- a/src/shared/config.ts
+++ b/src/shared/config.ts
@@ -19,7 +19,8 @@ export const postRefetchSeconds: number = 60 * 1000;
 export const trendingFetchLimit = 6;
 export const mentionDropdownFetchLimit = 10;
 export const commentTreeMaxDepth = 8;
-export const markdownFieldCharacterLimit = 50000;
+export const postMarkdownFieldCharacterLimit = 50000;
+export const markdownFieldCharacterLimit = 10000;
 export const maxUploadImages = 20;
 export const concurrentImageUpload = 4;
 export const updateUnreadCountsInterval = 30000;