---
title: baseURL
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/nsattributedstring/documentreadingoptionkey/baseurl
---

# baseURL

The base URL for HTML documents.

## Declaration

```swift
static let baseURL: NSAttributedString.DocumentReadingOptionKey
```

## Discussion

Discussion For HTML documents; NSURL containing base URL. The previous string constant was @"BaseURL".

## See Also

### Getting the document options

- [characterEncoding](foundation/nsattributedstring/documentreadingoptionkey/characterencoding.md)
- [defaultAttributes](foundation/nsattributedstring/documentreadingoptionkey/defaultattributes.md)
- [documentType](foundation/nsattributedstring/documentreadingoptionkey/documenttype.md)
- [fileType](foundation/nsattributedstring/documentreadingoptionkey/filetype.md)
- [readAccessURL](foundation/nsattributedstring/documentreadingoptionkey/readaccessurl.md)
- [textEncodingName](foundation/nsattributedstring/documentreadingoptionkey/textencodingname.md)
- [textSizeMultiplier](foundation/nsattributedstring/documentreadingoptionkey/textsizemultiplier.md)
- [timeout](foundation/nsattributedstring/documentreadingoptionkey/timeout.md)
- [webPreferences](foundation/nsattributedstring/documentreadingoptionkey/webpreferences.md)
- [webResourceLoadDelegate](foundation/nsattributedstring/documentreadingoptionkey/webresourceloaddelegate.md)