# PDFViewer.currentPageIndex

```ts
get currentPageIndex(): number
```

The page on show, as a zero-based index — what [pageChanged](https://kernstra.com/docs/web-sdk/api/events#ev-pagechanged) last named.

- Kind: getter
- Since: 1.0.0

Returns `number`

```ts
label.textContent = `Page ${viewer.currentPageIndex + 1} of ${doc.pageCount}`;
```

Part of [PDFViewer](https://kernstra.com/docs/web-sdk/api/pdfviewer) in the Kernstra Web SDK 1.0.0 API reference.

Web page: https://kernstra.com/docs/web-sdk/api/pdfviewer/currentpageindex