> For the complete documentation index, see [llms.txt](https://bohd4nx.gitbook.io/pyfragment/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bohd4nx.gitbook.io/pyfragment/advanced/cookies.md).

# Cookie Extraction Details

`get_cookies_from_browser(browser)` reads Fragment cookies from local browser storage (via `rookiepy`).

This is the fastest way to start when you do not want manual cookie export.

Supported browsers are defined in constants and include:

* chrome, firefox, edge, brave,
* arc, opera, opera\_gx,
* safari, vivaldi,
* chromium variants.

Validation includes:

* required key presence,
* non-empty values,
* optional expiration check for `stel_ssid`.

**If any required cookie is empty or missing, extraction is treated as failed.**

If extraction fails, `CookieError` is raised with actionable details.

Use [Credentials and Cookies](/pyfragment/setup-guide/credentials-and-cookies.md) for setup-first instructions.