diff --git a/packages/puppeteer-core/src/common/bidi/Connection.ts b/packages/puppeteer-core/src/common/bidi/Connection.ts
index c690d640834..5f26ee00fb1 100644
--- a/packages/puppeteer-core/src/common/bidi/Connection.ts
+++ b/packages/puppeteer-core/src/common/bidi/Connection.ts
@@ -80,6 +80,14 @@ interface Commands {
     params: Bidi.Session.SubscribeParameters;
     returnType: Bidi.Session.UnsubscribeResult;
   };
+  'cdp.sendCommand': {
+    params: Bidi.CDP.SendCommandParams;
+    returnType: Bidi.CDP.SendCommandResult;
+  };
+  'cdp.getSession': {
+    params: Bidi.CDP.GetSessionParams;
+    returnType: Bidi.CDP.GetSessionResult;
+  };
 }
 
 /**
diff --git a/packages/puppeteer-core/src/common/bidi/Context.ts b/packages/puppeteer-core/src/common/bidi/Context.ts
index 82dc23cc2c5..4d3711d6aac 100644
--- a/packages/puppeteer-core/src/common/bidi/Context.ts
+++ b/packages/puppeteer-core/src/common/bidi/Context.ts
@@ -20,6 +20,7 @@ import {HTTPResponse} from '../../api/HTTPResponse.js';
 import {WaitForOptions} from '../../api/Page.js';
 import {assert} from '../../util/assert.js';
 import {stringifyFunction} from '../../util/Function.js';
+import {ProtocolMapping} from '../Connection.js';
 import {ProtocolError, TimeoutError} from '../Errors.js';
 import {EventEmitter} from '../EventEmitter.js';
 import {PuppeteerLifeCycleEvent} from '../LifecycleWatcher.js';
@@ -222,6 +223,22 @@ export class Context extends EventEmitter {
       ),
     ]);
   }
+
+  async sendCDPCommand(
+    method: keyof ProtocolMapping.Commands,
+    params: object = {}
+  ): Promise<unknown> {
+    const session = await this.#connection.send('cdp.getSession', {
+      context: this._contextId,
+    });
+    // TODO: remove any once chromium-bidi types are updated.
+    const sessionId = (session.result as any).cdpSession;
+    return await this.#connection.send('cdp.sendCommand', {
+      cdpMethod: method,
+      cdpParams: params,
+      cdpSession: sessionId,
+    });
+  }
 }
 
 /**
diff --git a/packages/puppeteer-core/src/common/bidi/Page.ts b/packages/puppeteer-core/src/common/bidi/Page.ts
index 223a63c5115..524f5ed122f 100644
--- a/packages/puppeteer-core/src/common/bidi/Page.ts
+++ b/packages/puppeteer-core/src/common/bidi/Page.ts
@@ -29,6 +29,7 @@ import {isErrorLike} from '../../util/ErrorLike.js';
 import {ConsoleMessage, ConsoleMessageLocation} from '../ConsoleMessage.js';
 import {Handler} from '../EventEmitter.js';
 import {PDFOptions} from '../PDFOptions.js';
+import {Viewport} from '../PuppeteerViewport.js';
 import {EvaluateFunc, HandleFor} from '../types.js';
 import {debugError, waitWithTimeout} from '../util.js';
 
@@ -45,6 +46,7 @@ export class Page extends PageBase {
     ['browsingContext.load', this.#onLoad.bind(this)],
     ['browsingContext.domContentLoaded', this.#onDOMLoad.bind(this)],
   ]) as Map<Bidi.Session.SubscribeParametersEvent, Handler>;
+  #viewport: Viewport | null = null;
 
   constructor(context: Context) {
     super();
@@ -204,6 +206,29 @@ export class Page extends PageBase {
     });
   }
 
+  override async setViewport(viewport: Viewport): Promise<void> {
+    // TODO: use BiDi commands when available.
+    const mobile = false;
+    const width = viewport.width;
+    const height = viewport.height;
+    const deviceScaleFactor = 1;
+    const screenOrientation = {angle: 0, type: 'portraitPrimary'};
+
+    await this.#context.sendCDPCommand('Emulation.setDeviceMetricsOverride', {
+      mobile,
+      width,
+      height,
+      deviceScaleFactor,
+      screenOrientation,
+    });
+
+    this.#viewport = viewport;
+  }
+
+  override viewport(): Viewport | null {
+    return this.#viewport;
+  }
+
   override async pdf(options: PDFOptions = {}): Promise<Buffer> {
     const {path = undefined} = options;
     const {
diff --git a/test/TestExpectations.json b/test/TestExpectations.json
index 6b7fb0353df..28b39009acb 100644
--- a/test/TestExpectations.json
+++ b/test/TestExpectations.json
@@ -419,6 +419,12 @@
     "parameters": ["cdp", "firefox"],
     "expectations": ["FAIL", "SKIP"]
   },
+  {
+    "testIdPattern": "[screenshot.spec] Screenshots Page.screenshot *",
+    "platforms": ["darwin", "linux", "win32"],
+    "parameters": ["chrome", "webDriverBiDi"],
+    "expectations": ["FAIL"]
+  },
   {
     "testIdPattern": "[TargetManager.spec] *",
     "platforms": ["darwin", "linux", "win32"],
@@ -1949,6 +1955,12 @@
     "parameters": ["cdp", "firefox"],
     "expectations": ["FAIL"]
   },
+  {
+    "testIdPattern": "[screenshot.spec] Screenshots Page.screenshot should return base64",
+    "platforms": ["darwin", "linux", "win32"],
+    "parameters": ["chrome", "webDriverBiDi"],
+    "expectations": ["PASS"]
+  },
   {
     "testIdPattern": "[screenshot.spec] Screenshots Page.screenshot should return base64",
     "platforms": ["darwin", "linux", "win32"],
@@ -1967,6 +1979,12 @@
     "parameters": ["cdp", "firefox"],
     "expectations": ["FAIL", "PASS"]
   },
+  {
+    "testIdPattern": "[screenshot.spec] Screenshots Page.screenshot should work",
+    "platforms": ["darwin", "linux", "win32"],
+    "parameters": ["chrome", "webDriverBiDi"],
+    "expectations": ["PASS"]
+  },
   {
     "testIdPattern": "[screenshot.spec] Screenshots Page.screenshot should work",
     "platforms": ["darwin", "linux", "win32"],