diff --git a/webapp/src/lib/marked/renderers/InternalLink.svelte b/webapp/src/lib/marked/renderers/InternalLink.svelte
index 58b687a..e7275bf 100644
--- a/webapp/src/lib/marked/renderers/InternalLink.svelte
+++ b/webapp/src/lib/marked/renderers/InternalLink.svelte
@@ -20,7 +20,7 @@
 
 <dfn class="not-italic" title="Internal link">
 	<span class="underline cursor-not-allowed inline-flex items-center">
-		<span class="text-[#705dcf] opacity-50">
+		<span class="internal-link text-[#705dcf] opacity-50">
 			{#if useSlot}
 				<slot />
 			{:else}
diff --git a/webapp/src/lib/marked/renderers/Link.svelte b/webapp/src/lib/marked/renderers/Link.svelte
index 9e32b37..c046f14 100644
--- a/webapp/src/lib/marked/renderers/Link.svelte
+++ b/webapp/src/lib/marked/renderers/Link.svelte
@@ -15,7 +15,7 @@
 
 {#if isWebLink}
 	<span class="underline cursor-not-allowed inline-flex items-center font-normal">
-		<a {href} {title} class="text-[#705dcf]"><slot /></a>
+		<a {href} {title} class="external-link text-[#705dcf]"><slot /></a>
 		<span class="h-3 mb-2 text-zinc-400 ml-0.5"><LinkIcon /></span>
 	</span>
 {:else}
diff --git a/webapp/src/test/markdown/internalLinks.test.ts b/webapp/src/test/markdown/internalLinks.test.ts
index cc0b3fe..a2ed3b7 100644
--- a/webapp/src/test/markdown/internalLinks.test.ts
+++ b/webapp/src/test/markdown/internalLinks.test.ts
@@ -10,35 +10,41 @@ describe('rendering [[internal]] links', async () => {
 		render(MarkdownRenderer, { plaintext: plaintext });
 		const linkEl = await screen.findByText(/^Normal internal link$/);
 		expect(linkEl).toBeInTheDocument();
+		expect(linkEl).toHaveClass('internal-link');
 	});
 
 	it('Renders [[links|with alias]] correctly', async () => {
 		render(MarkdownRenderer, { plaintext: plaintext });
 		const linkEl = await screen.findByText(/^Link with alias$/);
 		expect(linkEl).toBeInTheDocument();
+		expect(linkEl).toHaveClass('internal-link');
 	});
 
 	it('Renders [[links#heading]] correctly', async () => {
 		render(MarkdownRenderer, { plaintext: plaintext });
 		const linkEl = await screen.findByText(/^Page with headings > heading A$/);
 		expect(linkEl).toBeInTheDocument();
+		expect(linkEl).toHaveClass('internal-link');
 	});
 
 	it('Renders [[links#heading|with alias]] correctly', async () => {
 		render(MarkdownRenderer, { plaintext: plaintext });
 		const linkEl = await screen.findByText(/^Link with heading alias$/);
 		expect(linkEl).toBeInTheDocument();
+		expect(linkEl).toHaveClass('internal-link');
 	});
 
 	it('Renders [[links#heading|with alias#fakeheading]] correctly', async () => {
 		render(MarkdownRenderer, { plaintext: plaintext });
 		const linkEl = await screen.findByText(/^Link with heading alias#false heading$/);
 		expect(linkEl).toBeInTheDocument();
+		expect(linkEl).toHaveClass('internal-link');
 	});
 
 	it('Does not render [[]] empty links', async () => {
 		render(MarkdownRenderer, { plaintext: plaintext });
 		const textEl = await screen.findByText('[[]]', { exact: false });
 		expect(textEl).toBeInTheDocument();
+		expect(textEl).not.toHaveClass('internal-link');
 	});
 });
diff --git a/webapp/src/test/markdown/markdownLink.test.ts b/webapp/src/test/markdown/markdownLink.test.ts
index f437918..089d1d2 100644
--- a/webapp/src/test/markdown/markdownLink.test.ts
+++ b/webapp/src/test/markdown/markdownLink.test.ts
@@ -9,23 +9,27 @@ describe('rendering [md style](links)', async () => {
 		render(MarkdownRenderer, { plaintext: plaintext });
 		const linkEl = await screen.findByText(/^Classic internal link \(URL encoded\)$/);
 		expect(linkEl).toBeInTheDocument();
+		expect(linkEl).toHaveClass('internal-link');
 	});
 
 	it('Renders URL-encoded internal links correctly', async () => {
 		render(MarkdownRenderer, { plaintext: plaintext });
 		const linkEl = await screen.findByText(/^Classic internal link \(tag format\)$/);
 		expect(linkEl).toBeInTheDocument();
+		expect(linkEl).toHaveClass('internal-link');
 	});
 
 	it('Renders http links correctly', async () => {
 		render(MarkdownRenderer, { plaintext: plaintext });
 		const linkEl = await screen.findByText(/^Wikipedia \(http\)$/);
 		expect(linkEl).toBeInTheDocument();
+		expect(linkEl).toHaveClass('external-link');
 	});
 
 	it('Renders https links correctly', async () => {
 		render(MarkdownRenderer, { plaintext: plaintext });
 		const linkEl = await screen.findByText(/Wikipedia \(https\)$/);
 		expect(linkEl).toBeInTheDocument();
+		expect(linkEl).toHaveClass('external-link');
 	});
 });