diff --git a/src/api-docs-entry.ts b/src/api-docs-entry.ts
index 63d87aff081dc..2fb85cef92c89 100644
--- a/src/api-docs-entry.ts
+++ b/src/api-docs-entry.ts
@@ -40,6 +40,7 @@ export * from './common/Accessibility.js';
 export * from './common/Browser.js';
 export * from './node/BrowserFetcher.js';
 export * from './node/Puppeteer.js';
+export * from './common/Coverage.js';
 export * from './common/Connection.js';
 export * from './common/ConsoleMessage.js';
 export * from './common/Coverage.js';
@@ -51,6 +52,7 @@ export * from './common/ExecutionContext.js';
 export * from './common/EventEmitter.js';
 export * from './common/FileChooser.js';
 export * from './common/FrameManager.js';
+export * from './common/PuppeteerViewport.js';
 export * from './common/Input.js';
 export * from './common/Page.js';
 export * from './common/Product.js';
diff --git a/src/common/Page.ts b/src/common/Page.ts
index ee8fd853b0206..e325cdee088d0 100644
--- a/src/common/Page.ts
+++ b/src/common/Page.ts
@@ -150,7 +150,7 @@ export interface ScreenshotClip {
  */
 export interface ScreenshotOptions {
   /**
-   * @default 'png'
+   * @defaultValue 'png'
    */
   type?: 'png' | 'jpeg';
   /**
@@ -162,7 +162,7 @@ export interface ScreenshotOptions {
   path?: string;
   /**
    * When true, takes a screenshot of the full page.
-   * @default false
+   * @defaultValue false
    */
   fullPage?: boolean;
   /**
@@ -175,12 +175,12 @@ export interface ScreenshotOptions {
   quality?: number;
   /**
    * Hides default white background and allows capturing screenshots with transparency.
-   * @default false
+   * @defaultValue false
    */
   omitBackground?: boolean;
   /**
    * Encoding of the image.
-   * @default 'binary'
+   * @defaultValue 'binary'
    */
   encoding?: 'base64' | 'binary';
 }
diff --git a/src/common/PuppeteerViewport.ts b/src/common/PuppeteerViewport.ts
index f626ce8d2bcf4..48a0823b52085 100644
--- a/src/common/PuppeteerViewport.ts
+++ b/src/common/PuppeteerViewport.ts
@@ -13,11 +13,39 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/**
+ *
+ * Sets the viewport of the page.
+ * @public
+ */
 export interface Viewport {
+  /**
+   * The page width in pixels.
+   */
   width: number;
+  /**
+   * The page height in pixels.
+   */
   height: number;
+  /**
+   * Specify device scale factor.
+   * See {@link https://developer.mozilla.org/en-US/docs/Web/API/Window/devicePixelRatio | devicePixelRatio} for more info.
+   * @defaultValue 1
+   */
   deviceScaleFactor?: number;
+  /**
+   * Whether the `meta viewport` tag is taken into account.
+   * @defaultValue false
+   */
   isMobile?: boolean;
+  /**
+   * Specifies if the viewport is in landscape mode.
+   * @defaultValue false
+   */
   isLandscape?: boolean;
+  /**
+   * Specify if the viewport supports touch events.
+   * @defaultValue false
+   */
   hasTouch?: boolean;
 }