> For the complete documentation index, see [llms.txt](https://overleaf-pro.ayaka.space/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://overleaf-pro.ayaka.space/latex/ja/narejjibsu/023-can-t-find-the-pdf-viewer.md).

# PDFビューアが見つかりません

OverleafエディタとPDFプレビューを含む分割画面が表示されない場合、またはPDFプレビューやOverleafエディタが画面上に表示されていない場合は、 **レイアウト** メニューを使って、Overleafワークスペースをすばやく再配置し、更新できます。

たとえば、分割画面表示を復元するには、 **エディタ & PDF** の **レイアウト** メニューを以下のように選択します。現在有効なオプションの横にはチェックマークが表示されます：

![Overleafのレイアウトメニュー](/files/249028decf40d5b1d1d5c7a8c3aeba4442184119)

についての詳細は、 **レイアウト** メニューについてはOverleafのヘルプページを参照してください [Overleafのレイアウトメニューの使い方](/latex/ja/narejjibsu/083-how-to-use-the-overleaf-layout-menu.md).


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://overleaf-pro.ayaka.space/latex/ja/narejjibsu/023-can-t-find-the-pdf-viewer.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
