diff --git a/src/vs/base/browser/htmlContentRenderer.ts b/src/vs/base/browser/htmlContentRenderer.ts
index 68fe5d89e22..4506912e178 100644
--- a/src/vs/base/browser/htmlContentRenderer.ts
+++ b/src/vs/base/browser/htmlContentRenderer.ts
@@ -6,7 +6,7 @@
 import * as DOM from 'vs/base/browser/dom';
 import { defaultGenerator } from 'vs/base/common/idGenerator';
 import { escape } from 'vs/base/common/strings';
-import { removeMarkdownEscapes, IMarkdownString } from 'vs/base/common/htmlContent';
+import { removeMarkdownEscapes, IMarkdownString, parseHrefAndDimensions } from 'vs/base/common/htmlContent';
 import * as marked from 'vs/base/common/marked/marked';
 import { IMouseEvent } from 'vs/base/browser/mouseEvent';
 import { DisposableStore } from 'vs/base/common/lifecycle';
@@ -100,29 +100,11 @@ export function renderMarkdown(markdown: IMarkdownString, options: RenderOptions
 
 	const renderer = new marked.Renderer();
 	renderer.image = (href: string, title: string, text: string) => {
-		href = _href(href, true);
 		let dimensions: string[] = [];
-		if (href) {
-			const splitted = href.split('|').map(s => s.trim());
-			href = splitted[0];
-			const parameters = splitted[1];
-			if (parameters) {
-				const heightFromParams = /height=(\d+)/.exec(parameters);
-				const widthFromParams = /width=(\d+)/.exec(parameters);
-				const height = heightFromParams ? heightFromParams[1] : '';
-				const width = widthFromParams ? widthFromParams[1] : '';
-				const widthIsFinite = isFinite(parseInt(width));
-				const heightIsFinite = isFinite(parseInt(height));
-				if (widthIsFinite) {
-					dimensions.push(`width="${width}"`);
-				}
-				if (heightIsFinite) {
-					dimensions.push(`height="${height}"`);
-				}
-			}
-		}
 		let attributes: string[] = [];
 		if (href) {
+			({ href, dimensions } = parseHrefAndDimensions(href));
+			href = _href(href, true);
 			attributes.push(`src="${href}"`);
 		}
 		if (text) {
diff --git a/src/vs/base/common/htmlContent.ts b/src/vs/base/common/htmlContent.ts
index 201e378e11e..ac7c8ed3a91 100644
--- a/src/vs/base/common/htmlContent.ts
+++ b/src/vs/base/common/htmlContent.ts
@@ -92,3 +92,25 @@ export function removeMarkdownEscapes(text: string): string {
 	}
 	return text.replace(/\\([\\`*_{}[\]()#+\-.!])/g, '$1');
 }
+
+export function parseHrefAndDimensions(href: string): { href: string, dimensions: string[] } {
+	const dimensions: string[] = [];
+	const splitted = href.split('|').map(s => s.trim());
+	href = splitted[0];
+	const parameters = splitted[1];
+	if (parameters) {
+		const heightFromParams = /height=(\d+)/.exec(parameters);
+		const widthFromParams = /width=(\d+)/.exec(parameters);
+		const height = heightFromParams ? heightFromParams[1] : '';
+		const width = widthFromParams ? widthFromParams[1] : '';
+		const widthIsFinite = isFinite(parseInt(width));
+		const heightIsFinite = isFinite(parseInt(height));
+		if (widthIsFinite) {
+			dimensions.push(`width="${width}"`);
+		}
+		if (heightIsFinite) {
+			dimensions.push(`height="${height}"`);
+		}
+	}
+	return { href, dimensions };
+}
diff --git a/src/vs/workbench/api/common/extHostTypeConverters.ts b/src/vs/workbench/api/common/extHostTypeConverters.ts
index df40f2256ff..80fef1bdda0 100644
--- a/src/vs/workbench/api/common/extHostTypeConverters.ts
+++ b/src/vs/workbench/api/common/extHostTypeConverters.ts
@@ -237,8 +237,7 @@ export namespace MarkdownString {
 		const resUris: { [href: string]: UriComponents } = Object.create(null);
 		res.uris = resUris;
 
-		const renderer = new marked.Renderer();
-		renderer.image = renderer.link = (href: string): string => {
+		const collectUri = (href: string): string => {
 			try {
 				let uri = URI.parse(href, true);
 				uri = uri.with({ query: _uriMassage(uri.query, resUris) });
@@ -248,6 +247,10 @@ export namespace MarkdownString {
 			}
 			return '';
 		};
+		const renderer = new marked.Renderer();
+		renderer.link = collectUri;
+		renderer.image = href => collectUri(htmlContent.parseHrefAndDimensions(href).href);
+
 		marked(res.value, { renderer });
 
 		return res;