diff --git a/remark.rest b/remark.rest
index a52a2126..ffaa988c 100644
--- a/remark.rest
+++ b/remark.rest
@@ -25,11 +25,7 @@ POST {{host}}/api/v1/preview
 Content-Type: application/json
 
 {
-	"text": "comment *blah* http://radio-t.com",
-	"locator": {
-		"url": "https://radio-t.com/blah1",
-		"site": "remark"
-	}
+	"text": "comment *blah* http://radio-t.com"
 }
 
 ### update comment
diff --git a/web/app/common/api.js b/web/app/common/api.js
index a6922633..109c2d9f 100644
--- a/web/app/common/api.js
+++ b/web/app/common/api.js
@@ -2,6 +2,8 @@ import { siteId, url } from './settings';
 
 import fetcher from './fetcher'
 
+// TODO: rename actions
+
 /* common */
 
 export const logOut = () => fetcher.get({ url: `/auth/logout`, overriddenApiBase: '' });
@@ -30,13 +32,21 @@ export const send = ({ text, pid }) => fetcher.post({
     text,
     locator: {
       site: siteId,
-      url
+      url,
     },
     ...(pid ? { pid } : {}),
   },
   withCredentials: true,
 });
 
+export const getPreview = ({ text }) => fetcher.post({
+  url: '/preview',
+  body: {
+    text,
+  },
+  withCredentials: true,
+});
+
 export const getUser = () => fetcher.get({
   url: '/user',
   withCredentials: true
@@ -83,6 +93,7 @@ export default {
   vote,
   send,
   getUser,
+  getPreview,
 
   pin,
   unpin,
diff --git a/web/app/components/comment/__text/comment__text.scss b/web/app/components/comment/__text/comment__text.scss
index bc03e370..0859c323 100644
--- a/web/app/components/comment/__text/comment__text.scss
+++ b/web/app/components/comment/__text/comment__text.scss
@@ -1,32 +1,3 @@
 .comment__text {
   margin-bottom: 4px;
-
-  p {
-    margin: 0;
-
-    + p {
-      margin-top: 8px;
-    }
-
-    // imported comments have br instead of p
-    br {
-      content: '';
-      display: block;
-      margin-top: 8px;
-    }
-  }
-
-  a {
-    color: #0aa;
-
-    &:hover {
-      color: #06c5c5;
-      text-decoration: none;
-    }
-  }
-
-  img {
-    max-width: 100%;
-    max-height: 300px;
-  }
 }
diff --git a/web/app/components/comment/comment.jsx b/web/app/components/comment/comment.jsx
index 9f17bd28..a53bb52e 100644
--- a/web/app/components/comment/comment.jsx
+++ b/web/app/components/comment/comment.jsx
@@ -219,7 +219,10 @@ export default class Comment extends Component {
               <a href={`${o.locator.url}#remark__comment-${o.id}`} className="comment__username">{o.user.name}</a>
             </div>
             {' '}
-            <div className="comment__text" dangerouslySetInnerHTML={{ __html: o.text }}/>
+            <div
+              className={b('comment__text', { mix: 'raw-content' })}
+              dangerouslySetInnerHTML={{ __html: o.text }}
+            />
           </div>
         </div>
       );
@@ -273,7 +276,10 @@ export default class Comment extends Component {
             }
           </div>
 
-          <div className="comment__text" dangerouslySetInnerHTML={{ __html: o.text }}/>
+          <div
+            className={b('comment__text', { mix: 'raw-content' })}
+            dangerouslySetInnerHTML={{ __html: o.text }}
+          />
 
           <div className="comment__actions">
             {
diff --git a/web/app/components/comment/index.js b/web/app/components/comment/index.js
index b5f5e405..f926c81c 100644
--- a/web/app/components/comment/index.js
+++ b/web/app/components/comment/index.js
@@ -1,3 +1,5 @@
+import 'components/raw-content';
+
 export { default } from './comment';
 
 require('./comment.scss');
diff --git a/web/app/components/input/__preview/input__preview.scss b/web/app/components/input/__preview/input__preview.scss
new file mode 100644
index 00000000..29ad640c
--- /dev/null
+++ b/web/app/components/input/__preview/input__preview.scss
@@ -0,0 +1,10 @@
+.input__preview {
+  margin-top: 8px;
+  padding: 7px 11px;
+  font-size: 16px;
+  line-height: 1.2;
+  border: 1px dashed #eee;
+  border-radius: 2px;
+  background: #fff;
+  color: #333;
+}
diff --git a/web/app/components/input/index.js b/web/app/components/input/index.js
index b38176c9..2dc45601 100644
--- a/web/app/components/input/index.js
+++ b/web/app/components/input/index.js
@@ -1,3 +1,5 @@
+import 'components/raw-content';
+
 export { default } from './input';
 
 require('./input.scss');
@@ -8,3 +10,4 @@ require('./__button/_type/_send/input__button_type_send.scss');
 
 require('./__buttons/input__buttons.scss');
 require('./__field/input__field.scss');
+require('./__preview/input__preview.scss');
diff --git a/web/app/components/input/input.jsx b/web/app/components/input/input.jsx
index 3e75104e..cffdbd7b 100644
--- a/web/app/components/input/input.jsx
+++ b/web/app/components/input/input.jsx
@@ -6,8 +6,13 @@ export default class Input extends Component {
   constructor(props) {
     super(props);
 
+    this.state = {
+      preview: null,
+    };
+
     this.autoResize = this.autoResize.bind(this);
     this.send = this.send.bind(this);
+    this.getPreview = this.getPreview.bind(this);
     this.onKeyDown = this.onKeyDown.bind(this);
   }
 
@@ -46,7 +51,7 @@ export default class Input extends Component {
         }
 
         this.fieldNode.value = '';
-        this.setState({ height: null });
+        this.setState({ height: null, preview: null });
       })
       .catch(() => {
         // TODO: do smth?
@@ -54,7 +59,19 @@ export default class Input extends Component {
       .finally(() => this.setState({ isFieldDisabled: false }));
   }
 
-  render(props, { height, isFieldDisabled }) {
+  getPreview() {
+    const text = this.fieldNode.value;
+
+    if (!text || !text.trim()) return;
+
+    api.getPreview({ text })
+      .then(preview => this.setState({ preview }))
+      .catch(() => {
+        // TODO: do smth?
+      });
+  }
+
+  render(props, { height, isFieldDisabled, preview }) {
     return (
       <form className={b('input', props)} onSubmit={this.send}>
         <textarea
@@ -71,9 +88,28 @@ export default class Input extends Component {
         </textarea>
 
         <div className="input__buttons">
-          <button className={b('input__button', {}, { type: 'preview' })} type="button">Preview</button>
-          <button className={b('input__button', {}, { type: 'send' })} type="submit">Send</button>
+          <button
+            className={b('input__button', {}, { type: 'preview' })}
+            type="button"
+            onClick={this.getPreview}
+          >Preview</button>
+
+          <button
+            className={b('input__button', {}, { type: 'send' })}
+            type="submit"
+          >Send</button>
         </div>
+
+        {
+          // TODO: it can be more elegant;
+          // for example it can render full comment component here (or above textarea on mobile)
+          !!preview && (
+            <div
+              className={b('input__preview', { mix: 'raw-content' })}
+              dangerouslySetInnerHTML={{ __html: preview }}
+            />
+          )
+        }
       </form>
     );
   }
diff --git a/web/app/components/raw-content/index.js b/web/app/components/raw-content/index.js
new file mode 100644
index 00000000..12c85c14
--- /dev/null
+++ b/web/app/components/raw-content/index.js
@@ -0,0 +1 @@
+require('./raw-content.scss');
diff --git a/web/app/components/raw-content/raw-content.scss b/web/app/components/raw-content/raw-content.scss
new file mode 100644
index 00000000..bf4e71d0
--- /dev/null
+++ b/web/app/components/raw-content/raw-content.scss
@@ -0,0 +1,30 @@
+.raw-content {
+  p {
+    margin: 0;
+
+    + p {
+      margin-top: 8px;
+    }
+
+    // imported comments have br instead of p
+    br {
+      content: '';
+      display: block;
+      margin-top: 8px;
+    }
+  }
+
+  a {
+    color: #0aa;
+
+    &:hover {
+      color: #06c5c5;
+      text-decoration: none;
+    }
+  }
+
+  img {
+    max-width: 100%;
+    max-height: 300px;
+  }
+}