Puppeteer: Could not serialize referenced object

A referenced browser object cannot be serialized into a Node.js value.

Error message

Could not serialize referenced object

How this error happens

jsonValue must bring a browser object back by value. A complex object such as the global window contains references that cannot be represented as a normal Node.js value.

The snippets use an open Puppeteer page named page.

const handle = await page.evaluateHandle(() => {
    return window;
});

await handle.jsonValue();

How to fix

Extract only the fields you need inside the browser instead of serializing the entire object graph.

const details = await page.evaluate(() => {
    return {
        title: document.title,
        url: location.href,
    };
});

console.log(details);

Things to keep in mind

Dispose the handle after use. Whether a specific object fails depends on the browser’s serialization; the point is to transfer selected plain data rather than a global object.

All Puppeteer errors