> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/ios/search/samples.md).

# Code samples for searching PDF text or images on iOS

Search PDF files for text using regular expressions with TextSearch. Replace text and images in existing PDFs with ContentReplacer. Explore iOS showcase app for SDK features including Text Search demo

[Search PDF files for text](/ios/get-started/samples.md#textsearch) This sample shows how to use TextSearch to search text on PDF pages using regular expressions.

[Search & Replace PDF text or images](/ios/get-started/samples.md#contentreplacer) This sample which shows how to use pdftron.PDF.ContentReplacer to search and replace text strings and images in existing PDF (e.g. business cards and other PDF templates).

## UI samples

{% hint style="info" %}
Please note that **native code** is being used in the following showcase app(s). Apryse SDK for Xamarin provides the same features but the source code for the showcase application(s) is only available in native languages.
{% endhint %}

[iOS showcase sample app](/ios/samples/run-sample.md) The showcase demonstrates some features of the SDK. To view the search demo, select `Text Search` found under `Viewing` in the app.


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# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.apryse.com/ios/search/samples.md?ask=<question>&goal=<endgoal>
```

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