A crate for inlining CSS into HTML documents. When you send HTML emails you need to use "style" attributes instead of "style" tags.
For example, this HTML:
<html>
<head>
<title>Test</title>
<style>h1 { color:blue; }</style>
</head>
<body>
<h1>Big Text</h1>
</body>
</html>Will be turned into this:
<html>
<head><title>Test</title></head>
<body>
<h1 style="color:blue;">Big Text</h1>
</body>
</html>To use it in your project add the following line to your dependencies section in project's Cargo.toml file:
css-inline = "0.4"use css_inline;
const HTML: &str = r#"<html>
<head>
<title>Test</title>
<style>h1 { color:blue; }</style>
</head>
<body>
<h1>Big Text</h1>
</body>
</html>"#;
fn main() -> Result<(), css_inline::InlineError> {
let inlined = css_inline::inline(HTML)?;
// Do something with inlined HTML, e.g. send an email
Ok(())
}css-inline can be configured by using InlineOptions and CSSInliner:
use css_inline;
fn main() -> Result<(), css_inline::InlineError> {
let options = css_inline::InlineOptions {
load_remote_stylesheets: false,
..Default::default()
};
let inliner = css_inline::CSSInliner::new(options);
let inlined = inliner.inline(HTML);
// Do something with inlined HTML, e.g. send an email
Ok(())
}inline_style_tags. Whether to inline CSS from "style" tags. Default:trueremove_style_tags. Remove "style" tags after inlining. Default:falsebase_url. Base URL to resolve relative URLs. Default:Noneload_remote_stylesheets. Whether remote stylesheets should be loaded or not. Default:trueextra_css. Additional CSS to inline. Default:None
css-inline provides a command-line interface:
$ css-inline --help
css-inline inlines CSS into HTML documents.
USAGE:
css-inline [OPTIONS] [PATH ...]
command | css-inline [OPTIONS]
ARGS:
<PATH>...
An HTML document to process. In each specified document "css-inline" will look for
all relevant "style" and "link" tags, will load CSS from them and then will inline it
to the HTML tags, according to the relevant CSS selectors.
When multiple documents are specified, they will be processed in parallel and each inlined
file will be saved with "inlined." prefix. E.g. for "example.html", there will be
"inlined.example.html".
OPTIONS:
--inline-style-tags
Whether to inline CSS from "style" tags. The default value is `true`. To disable inlining
from "style" tags use `-inline-style-tags=false`.
--remove-style-tags
Remove "style" tags after inlining.
--base-url
Used for loading external stylesheets via relative URLs.
--load-remote-stylesheets
Whether remote stylesheets should be loaded or not.
--extra-css
Additional CSS to inline.
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