> 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/get-started/faq/close-a-document.md).

# Is it necessary to close a document before loading another one?

World's #1 PDF SDK Library for Web, Mobile, Server, Desktop

The [loadDocument](https://sdk.apryse.com/api/web/UI.html#.loadDocument) API internally uses the [closeDocument](https://sdk.apryse.com/api/web/UI.html#.closeDocument) API to make sure that things such as DOM elements, event listeners and any other forms of memory consumers related to the current document will be cleaned up before loading another document. This means that there is no need to explicitly close a document beforing loading another one. However, you may want to call [closeDocument](https://sdk.apryse.com/api/web/UI.html#.closeDocument) to keep the memory usage low while still showing the UI if no documents should be loaded currently.


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