diff --git a/src/components/ContentWrapFiles.jsx b/src/components/ContentWrapFiles.jsx
index eda83e7..faa0d03 100644
--- a/src/components/ContentWrapFiles.jsx
+++ b/src/components/ContentWrapFiles.jsx
@@ -141,6 +141,9 @@ export default class ContentWrapFiles extends Component {
 
 			CodeMirror.autoLoadMode(this.cm, mode);
 		}
+		if (mime === 'application/json') {
+			mime = 'application/ld+json';
+		}
 		this.fileBuffers[file.path] = CodeMirror.Doc(
 			file.content || '',
 			detectedMode ? mime : 'text/plain'
diff --git a/src/utils.js b/src/utils.js
index 58b895a..469a3e2 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -477,6 +477,10 @@ export function prettify(file) {
 			parser = 'babylon';
 			plugins = [require('prettier/parser-babylon')];
 			break;
+		case 'json':
+			parser = 'json';
+			plugins = [require('prettier/parser-babylon')];
+			break;
 		case 'css':
 			parser = 'css';
 			plugins = [require('prettier/parser-postcss')];