> 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/web/security/apis.md).

# API for Securing PDFs with JavaScript

Enhance document viewing and editing with WebViewer, a JavaScript library for annotating and editing documents across browsers. Explore PDFNet.SecurityHandler for secure methods. The Apryse Web SDK st

[WebViewer](https://sdk.apryse.com/api/web/index.html) WebViewer is a pure JavaScript library to annotate, view, and edit documents inside all major browsers.

[Core](https://sdk.apryse.com/api/web/Core.html) A namespace containing core control classes.

## Full API

{% hint style="info" %}
[Full API](/web/what-is-webviewer/full-api.md) is mainly used for PDF processing situations that are not featured using the Standard API. The preferred recommendation is to use the Standard API to address your situation when possible. Standard API is easy to use, loaded by default, and performs best for most situations.
{% endhint %}

[PDFNet.SecurityHandler](https://sdk.apryse.com/api/web/Core.PDFNet.SecurityHandler.html) A class containing methods for security.


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