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## href

```perl
my $href = $css->href( $alias );
```

This returns this URL for an alias.

## link\_html

```perl
my $html = $css->link_html( $alias );
```

This returns the link HTML markup for the stylesheet referred to by
`$alias`.

## inline\_html

```perl
my $html = $css->inline_html( $alias );
```

This returns an embedded stylesheet referred to by `$alias`.

## link\_or\_inline\_html

```perl
my $html = $css->link_or_inline_html( @aliases );
```

This returns either the link HTML markup, or the embedded stylesheet,
if the file size is not greater than ["inline\_max"](#inline_max).

Note that a stylesheet will be inlined, even if there is are
["cdn\_links"](#cdn_links).

## deferred\_link\_html

```perl
my $html = $css->deferred_link_html( @aliases );
```

This returns the HTML markup for the stylesheets specified by
["aliases"](#aliases), as appropriate for each stylesheet.

If the stylesheets are not greater than ["inline\_max"](#inline_max), then it will
embed them.  Otherwise it will return the appropriate markup,
depending on ["defer\_css"](#defer_css).

# KNOWN ISSUES

## Content-Security-Policy (CSP)

If a web site configures a
[Content-Security-Policy](https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP)
setting to disable all inlined JavaScript, then the JavaScript shim will
not work.

## XHTML Support

This module is written for HTML5.

It does not support XHTML self-closing elements or embedding styles
and scripts in CDATA sections.

## Encoding

All files are embedded as raw files.

No URL encoding is done on the HTML links or ["asset\_id"](#asset_id).

## It's spelled "Deferrable"

It's also spelled "Deferable".

# SOURCE

The development version is on github at [https://github.com/robrwo/HTML-DeferableCSS](https://github.com/robrwo/HTML-DeferableCSS)
and may be cloned from [git://github.com/robrwo/HTML-DeferableCSS.git](git://github.com/robrwo/HTML-DeferableCSS.git)

# BUGS

Please report any bugs or feature requests on the bugtracker website
[https://github.com/robrwo/HTML-DeferableCSS/issues](https://github.com/robrwo/HTML-DeferableCSS/issues)

When submitting a bug or request, please include a test-file or a
patch to an existing test-file that illustrates the bug or desired
feature.

Please report any bugs in `cssrelpreload.js` to
[https://github.com/filamentgroup/loadCSS/issues](https://github.com/filamentgroup/loadCSS/issues).

# AUTHOR

Robert Rothenberg <rrwo@cpan.org>

This module was developed from work for Science Photo Library
[https://www.sciencephoto.com](https://www.sciencephoto.com).

`reset.css` comes from [http://meyerweb.com/eric/tools/css/reset/](http://meyerweb.com/eric/tools/css/reset/).

`cssrelpreload.js` comes from [https://github.com/filamentgroup/loadCSS/](https://github.com/filamentgroup/loadCSS/).

# COPYRIGHT AND LICENSE

This software is Copyright (c) 2020 by Robert Rothenberg.

This is free software, licensed under:

```
The MIT (X11) License
```