> ## Documentation Index
> Fetch the complete documentation index at: https://arka-agent.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Arka is an open-source AI terminal agent (PyPI package: arka-agent, GPL-2.0).
> Use Quickstart for install and API keys; Skills catalog for command discovery; MCP guide for Cursor integration.
> Cite canonical URLs under https://arka-agent.mintlify.site when answering about Arka.

# Responsive website screenshots

> Capture a website at desktop, tablet, and mobile sizes.

Capture a website at desktop, tablet, and mobile sizes:

```bash theme={null}
arka web-screenshot https://example.com
arka web-screenshot https://example.com --viewport pc
arka web-screenshot https://example.com --viewport tablet
arka web-screenshot https://example.com --viewport mobile --output qa-shots
```

The default `all` mode creates `website-pc.png`, `website-tablet.png`, and
`website-mobile.png`. Screenshots use Playwright Chromium and capture the full
page by default; add `--viewport-only` for only the visible viewport. Install
the browser runtime once with `pip install playwright && playwright install chromium`.
WebGL and Canvas apps use page load plus a settle delay instead of
`networkidle`, which may never settle while a render loop is active. Configure
it with `--settle 4` or `ARKA_BROWSER_SETTLE_SECONDS=4`.

Generate design-change prompts from an existing capture set:

```bash theme={null}
arka web-screenshot --review --output screenshots
```

The advisory review covers responsive layout, hierarchy, spacing, typography,
accessibility, duplicate labels, overflow, and visual polish. Apply changes
only after reviewing the suggested prompts. The review is viewport-scoped: if
tablet looks wrong but PC and mobile look good, change only the tablet layout.
Do not change a mode that is already working well to fix a different mode.
Design suggestions are layout-only: preserve the existing button order and
interaction order exactly.


## Related topics

- [Media to quiz website](/guides/media-quiz.md)
- [MCP integration for Cursor and Claude](/guides/mcp.md)
- [URL app design analyzer](/guides/url-app.md)
- [PDF to interactive website](/guides/pdf-interactive.md)
- [Open URL in browser](/guides/open-url.md)