diff --git a/ui/src/components/comment-form.tsx b/ui/src/components/comment-form.tsx
index 1b4eda99db..a69ae06fc6 100644
--- a/ui/src/components/comment-form.tsx
+++ b/ui/src/components/comment-form.tsx
@@ -56,7 +56,7 @@ export class CommentForm extends Component<CommentFormProps, CommentFormState> {
         <form onSubmit={linkEvent(this, this.handleCommentSubmit)}>
           <div class="form-group row">
             <div class="col-sm-12">
-              <textarea class="form-control" value={this.state.commentForm.content} onInput={linkEvent(this, this.handleCommentContentChange)} required disabled={this.props.disabled} rows={2} />
+              <textarea class="form-control" value={this.state.commentForm.content} onInput={linkEvent(this, this.handleCommentContentChange)} required disabled={this.props.disabled} rows={2} maxLength={10000} />
             </div>
           </div>
           <div class="row">
diff --git a/ui/src/components/community-form.tsx b/ui/src/components/community-form.tsx
index 66071a3fac..e295dcbedd 100644
--- a/ui/src/components/community-form.tsx
+++ b/ui/src/components/community-form.tsx
@@ -88,7 +88,7 @@ export class CommunityForm extends Component<CommunityFormProps, CommunityFormSt
         <div class="form-group row">
           <label class="col-12 col-form-label">Sidebar</label>
           <div class="col-12">
-            <textarea value={this.state.communityForm.description} onInput={linkEvent(this, this.handleCommunityDescriptionChange)} class="form-control" rows={3} />
+            <textarea value={this.state.communityForm.description} onInput={linkEvent(this, this.handleCommunityDescriptionChange)} class="form-control" rows={3} maxLength={10000} />
           </div>
         </div>
         <div class="form-group row">
diff --git a/ui/src/components/post-form.tsx b/ui/src/components/post-form.tsx
index e4e75df458..0154a923f4 100644
--- a/ui/src/components/post-form.tsx
+++ b/ui/src/components/post-form.tsx
@@ -94,7 +94,7 @@ export class PostForm extends Component<PostFormProps, PostFormState> {
           <div class="form-group row">
             <label class="col-sm-2 col-form-label">Body</label>
             <div class="col-sm-10">
-              <textarea value={this.state.postForm.body} onInput={linkEvent(this, this.handlePostBodyChange)} class="form-control" rows={4} />
+              <textarea value={this.state.postForm.body} onInput={linkEvent(this, this.handlePostBodyChange)} class="form-control" rows={4} maxLength={10000} />
             </div>
           </div>
           {/* Cant change a community from an edit */}
diff --git a/ui/src/components/site-form.tsx b/ui/src/components/site-form.tsx
index 9c0f472bcb..7c51be4035 100644
--- a/ui/src/components/site-form.tsx
+++ b/ui/src/components/site-form.tsx
@@ -49,7 +49,7 @@ export class SiteForm extends Component<SiteFormProps, SiteFormState> {
         <div class="form-group row">
           <label class="col-12 col-form-label">Sidebar</label>
           <div class="col-12">
-            <textarea value={this.state.siteForm.description} onInput={linkEvent(this, this.handleSiteDescriptionChange)} class="form-control" rows={3} />
+            <textarea value={this.state.siteForm.description} onInput={linkEvent(this, this.handleSiteDescriptionChange)} class="form-control" rows={3} maxLength={10000} />
           </div>
         </div>
         <div class="form-group row">