> 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/compare-files/compare.md).

# Compare files for differences on iOS

Discover how to use Overlay To for visual document comparison by overlaying and masking. Enhance your document analysis with this powerful tool! The Apryse iOS SDK streamlines secure document processi

Comparing files provides the ability to understand what has changed from one file to another.

With the Apryse SDK, you can visually compare the differences between 2 files (images, paths, text, forms, shadings, and other types of content).

## Get started

[Overlay](/ios/compare-files/file-comparison-i.md) To provide a visual document comparison by [overlaying](https://en.wikipedia.org/wiki/Blend_modes#Overlay) and [masking](https://en.wikipedia.org/wiki/Mask_\(computing\)).


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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:

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