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This is documentation for the next version of K6. For the latest stable release, go to the latest version.

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Open source

size()

The size of the response body and the headers.

Returns

TypeDescription
PromiseReturns Size.

Size

PropertyTypeDescription
bodynumberSize in bytes of the response body.
headersnumberSize in bytes of the headers body.

Example

JavaScript 
import { browser } from 'k6/browser';

export const options = {
  scenarios: {
    ui: {
      executor: 'shared-iterations',
      options: {
        browser: {
          type: 'chromium',
        },
      },
    },
  },
};

export default async function () {
  const page = await browser.newPage();

  try {
    const res = await page.goto('https://test.k6.io/');

    const size = await res.size();
    console.log(`size: ${JSON.stringify(size)}`); // size: {"headers":174,"body":11279}
  } finally {
    await page.close();
  }
}