diff --git a/src/formatter/format.ts b/src/formatter/format.ts
index 941f9f0..7761cc5 100644
--- a/src/formatter/format.ts
+++ b/src/formatter/format.ts
@@ -5,6 +5,8 @@ import * as md from './markdown';
 import { defaultNameTransform } from './name-transform';
 import type { NameTransformFn } from './types';
 
+const MAX_VALUES = 20;
+
 export function formatModelsAsMarkdown(
   models: NamedModel[],
   options: FormatterOptions
@@ -97,11 +99,20 @@ function formatModel(model: Model, transformName: NameTransformFn): string {
         )
       );
     case 'enum':
+      const enumList = md.list.unordered(
+        model.values.map(value => md.code.inline(`'${value}'`))
+      );
       return md.paragraphs(
         md.italic('Enum string, one of the following possible values:'),
-        md.list.unordered(
-          model.values.map(value => md.code.inline(`'${value}'`))
-        )
+        model.values.length > MAX_VALUES
+          ? md.details(
+              md.italic(
+                `Expand for full list of ${model.values.length} values`,
+                'html'
+              ),
+              enumList
+            )
+          : enumList
       );
     case 'native-enum':
       return md.paragraphs(
@@ -373,7 +384,11 @@ function formatModelInline(
       );
     case 'enum':
       return md.code.inline(
-        model.values.map(value => `'${value}'`).join(' | ')
+        model.values
+          .slice(0, MAX_VALUES)
+          .map(value => `'${value}'`)
+          .concat(model.values.length > MAX_VALUES ? ['...'] : [])
+          .join(' | ')
       );
     case 'native-enum':
       return (
diff --git a/src/formatter/markdown.ts b/src/formatter/markdown.ts
index 2a6c975..0db3cc8 100644
--- a/src/formatter/markdown.ts
+++ b/src/formatter/markdown.ts
@@ -17,9 +17,11 @@ export const paragraphs = (...texts: (string | null | undefined | false)[]) =>
 export const heading = (level: 1 | 2 | 3 | 4 | 5 | 6, text: string) =>
   `${'#'.repeat(level)} ${text}`;
 
-export const bold = (text: string) => `**${text}**`;
+export const bold = (text: string, lang: 'md' | 'html' = 'md') =>
+  lang === 'html' ? `<b>${text}</b>` : `**${text}**`;
 
-export const italic = (text: string) => `_${text}_`;
+export const italic = (text: string, lang: 'md' | 'html' = 'md') =>
+  lang === 'html' ? `<i>${text}</i>` : `_${text}_`;
 
 export const link = (href: string, text?: string) =>
   `[${text ?? href}](${href})`;
@@ -99,3 +101,11 @@ export const table = (
 
   return lines(...rows.map(row => `| ${row.map(formatCell).join(' | ')} |`));
 };
+
+export const details = (summary: string, details: string) =>
+  lines(
+    '<details>',
+    `<summary>${summary}</summary>`,
+    `\n${details}\n`.replace(/^\n{2,}/, '\n').replace(/\n{2,}$/, '\n'),
+    '</details>'
+  );