diff --git a/src/components/Seo/Seo.js b/src/components/Seo/Seo.js
index b29ff86..3ef3802 100644
--- a/src/components/Seo/Seo.js
+++ b/src/components/Seo/Seo.js
@@ -12,8 +12,8 @@ const Seo = props => {
 
   const title = postTitle ? `${postTitle} - ${config.shortSiteTitle}` : config.siteTitle;
   const description = postDescription ? postDescription : config.siteDescription;
-  const image = postCover ? postCover : config.siteImage;
-  const url = config.siteUrl + config.pathPrefix + postSlug;
+  const image = postCover ? config.siteUrl + config.pathPrefix + postCover.childImageSharp.resize.src : config.siteUrl + config.pathPrefix + "/" + config.siteImage;
+  const url = postSlug ? config.siteUrl + postSlug : (typeof window !== 'undefined')  ? config.siteUrl + window.location.pathname : config.siteUrl;
 
   return (
     <Helmet
diff --git a/src/templates/PostTemplate.js b/src/templates/PostTemplate.js
index 6b5bf36..65632ca 100644
--- a/src/templates/PostTemplate.js
+++ b/src/templates/PostTemplate.js
@@ -65,7 +65,7 @@ export const postQuery = graphql`
         category
         cover {
           childImageSharp {
-            resize(width: 300) {
+            resize(width: 1200) {
               src
             }
           }