> 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.md). # Search - [PDF text & image search library for iOS](https://docs.apryse.com/ios/search/search.md): Looking to search and replace text or images in a PDF? Learn how to efficiently search for text in a PDF and replace content with ease. Start now! The Apryse iOS SDK streamlines secure document proces - [Text search](https://docs.apryse.com/ios/search/text.md): Learn how to add text search functionality to an iOS viewer using the PTTextSearchViewController class. Highlight search results, navigate through documents, and refine search options with ease. Explo - [Replacing text & images in PDFs with iOS](https://docs.apryse.com/ios/search/replace.md): Learn how to search and replace text or images in a PDF file with this comprehensive code sample. Replace text or images in PDFs effortlessly using pdftron.PDF.ContentReplacer. The Apryse iOS SDK stre - [Code samples for searching PDF text or images on iOS](https://docs.apryse.com/ios/search/samples.md): 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 - [APIs for searching PDF documents on iOS](https://docs.apryse.com/ios/search/apis.md): Discover utility classes for searching PDF documents in iOS using Objective-C and Swift. Learn about PTTextSearch and PTContentReplacer for efficient document management. The Apryse iOS SDK streamline --- # 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 by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.apryse.com/ios/search.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. 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.