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Description

A crate for inlining CSS into HTML documents. When you send HTML emails you need to use "style" attributes instead of "style" tags.

Programming language: Rust
License: MIT License
Tags: Web Programming     Email     HTML     Miscellaneous     CSS     Css-inline    
Latest version: v0.7.1

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README

css-inline

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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 the project's Cargo.toml file:

css-inline = "0.7"

Usage

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(())
}

Features & Configuration

css-inline can be configured by using CSSInliner::options() that implements the Builder pattern:

use css_inline;

fn main() -> Result<(), css_inline::InlineError> {
    let inliner = css_inline::CSSInliner::options()
        .load_remote_stylesheets(false)
        .build();
    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: true
  • remove_style_tags. Remove "style" tags after inlining. Default: false
  • base_url. Base URL to resolve relative URLs. Default: None
  • load_remote_stylesheets. Whether remote stylesheets should be loaded or not. Default: true
  • extra_css. Additional CSS to inline. Default: None

Command Line Interface

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 inline it
        to the HTML tags, according to the corresponding 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.

Support

If you have anything to discuss regarding this library, please, join our gitter!