A Tower layer for minifying HTML responses using minify-html.
Add this to your Cargo.toml:
[dependencies]
tower-minify-html = "0.1.0"use axum::{Router, response::Html, routing::get};
use minify_html::Cfg;
use tower_minify_html::MinifyHtmlLayer;
#[tokio::main]
async fn main() {
let mut cfg = Cfg::new();
cfg.keep_closing_tags = true;
cfg.keep_html_and_head_opening_tags = true;
cfg.keep_comments = false;
let app = Router::new()
.route("/", get(handler))
.layer(MinifyHtmlLayer::new(cfg));
let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();
axum::serve(listener, app).await.unwrap();
}
async fn handler() -> Html<&'static str> {
Html(
r#"
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title> Hello World </title>
</head>
<body>
<h1> Hello World </h1>
</body>
</html>
"#,
)
}standard(default): Enables the standardminify-htmlbackend.onepass: Enables theminify-html-onepassbackend.
Both features can be enabled at the same time.
You can choose between the standard and onepass backends using the MinifyHtmlLayerBuilder.
The standard backend uses minify-html and is the default and can be used with MinifyHtmlLayer::new or the builder.
use tower_minify_html::{MinifyHtmlLayer, Cfg};
let mut cfg = Cfg::new();
let layer = MinifyHtmlLayer::new(cfg);The onepass backend uses minify-html-onepass and is faster but has more limitations. It requires the onepass feature.
use tower_minify_html::{MinifyHtmlLayer, Backend, OnePassCfg};
let mut cfg = OnePassCfg::new();
let layer = MinifyHtmlLayer::builder()
.backend(Backend::Onepass)
.onepass_config(cfg)
.build();When using this layer with compression (e.g., tower-http's CompressionLayer), ensure that MinifyHtmlLayer is applied before the compression layer in your code (i.e., MinifyHtmlLayer should be the inner layer). This ensures that the HTML is minified before it is compressed.
let app = Router::new()
.route("/", get(handler))
.layer(MinifyHtmlLayer::new(cfg))
.layer(CompressionLayer::new());MIT OR Apache-2.0