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<h2class="anchor anchorWithStickyNavbar_LWe7"id="properties">Properties<ahref="#properties"class="hash-link"aria-label="Direct link to Properties"title="Direct link to Properties"></a></h2>
<table><thead><tr><th><p>Property</p></th><th><p>Modifiers</p></th><th><p>Type</p></th><th><p>Description</p></th><th><p>Default</p></th></tr></thead><tbody><tr><td><spanid="baseurl">baseUrl</span></td><td><p><code>optional</code></p></td><td><p>string</p></td><td><p>Determines the host that will be used for downloading.</p></td><td><p>Either</p><ul>
</ul></td></tr><tr><td><spanid="browser">browser</span></td><td></td><td><p><ahref="/next/browsers-api/browsers.browser">Browser</a></p></td><td><p>Determines which browser to install.</p></td><td></td></tr><tr><td><spanid="buildid">buildId</span></td><td></td><td><p>string</p></td><td><p>Determines which buildId to download. BuildId should uniquely identify binaries and they are used for caching.</p></td><td></td></tr><tr><td><spanid="buildidalias">buildIdAlias</span></td><td><p><code>optional</code></p></td><td><p>string</p></td><td><p>An alias for the provided <code>buildId</code>. It will be used to maintain local metadata to support aliases in the <code>launch</code> command.</p></td><td></td></tr><tr><td><spanid="cachedir">cacheDir</span></td><td></td><td><p>string</p></td><td><p>Determines the path to download browsers to.</p></td><td></td></tr><tr><td><spanid="downloadprogresscallback">downloadProgressCallback</span></td><td><p><code>optional</code></p></td><td><p>(downloadedBytes: number, totalBytes: number) => void</p></td><td><p>Provides information about the progress of the download.</p></td><td></td></tr><tr><td><spanid="platform">platform</span></td><td><p><code>optional</code></p></td><td><p><ahref="/next/browsers-api/browsers.browserplatform">BrowserPlatform</a></p></td><td><p>Determines which platform the browser will be suited for.</p></td><td><p><strong>Auto-detected.</strong></p></td></tr><tr><td><spanid="unpack">unpack</span></td><td><p><code>optional</code></p></td><td><p>boolean</p></td><td><p>Whether to unpack and install browser archives.</p></td><td><p><code>true</code></p></td></tr></tbody></table></div></article><navclass="pagination-nav docusaurus-mt-lg"aria-label="Docs pages"><aclass="pagination-nav__link pagination-nav__link--prev"href="/next/browsers-api/browsers.installedbrowser.writemetadata"><divclass="pagination-nav__sublabel">Previous</div><divclass="pagination-nav__label">InstalledBrowser.writeMetadata</div></a><aclass="pagination-nav__link pagination-nav__link--next"href="/next/browsers-api/browsers.launchoptions"><divclass="pagination-nav__sublabel">Next</div><divclass="pagination-nav__label">LaunchOptions</div></a></nav></div></div><divclass="col col--3"><divclass="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ulclass="table-of-contents table-of-contents__left-border"><li><ahref="#properties"class="table-of-contents__link toc-highlight">Properties</a></li></ul></div></div></div></div></main></div></div></div><footerclass="footer footer--dark"><divclass="container container-fluid"><divclass="row footer__links"><divclass="col footer__col"><divclass="footer__title">Community</div><ulclass="footer__items clean-list"><liclass="footer__item"><ahref="https://stackoverflow.com/questions/tagged/puppeteer"target="_blank"rel="noopener noreferrer"class="footer__link-item">Stack Overflow<svgwidth="13.5"height="13.5"aria-hidden="true"viewBox="0 0 24 24"class="iconExternalLink_nPIU"><pathfill="currentColor"d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><liclass="footer__item"><ahref="https://twitter.com/chromedevtools"target="_blank"rel="noopener noreferrer"class="footer__link-item">Twitter<svgwidth="13.5"height="13.5"aria-hidden="true"viewBox="0 0 24 24"class="iconExternalLink_nPIU"><pathfill="currentColor"d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><liclass="footer__item"><ahref="https://goo.gle/devtools-youtube"target="_blank"rel="noopener noreferrer"class="footer__link-item">YouTube<svgwidth="13.5"height="13.5"aria-hidden="true"viewBox="0 0 24 24"class="iconExternalLink_nPIU"><pathfill="currentColor"d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li></ul></div></div><divclass="footer__bottom text--center"><divclass="footer__copyright">Copyrigh
