diff --git a/crates/swc_html_minifier/src/lib.rs b/crates/swc_html_minifier/src/lib.rs
index 563aad1aa493..f7e2b969756d 100644
--- a/crates/swc_html_minifier/src/lib.rs
+++ b/crates/swc_html_minifier/src/lib.rs
@@ -173,6 +173,8 @@ static ALLOW_TO_TRIM_HTML_ATTRIBUTES: &[(&str, &str)] = &[
     ("object", "usemap"),
 ];
 
+static ALLOW_TO_TRIM_SVG_ATTRIBUTES: &[(&str, &str)] = &[("a", "href")];
+
 static COMMA_SEPARATED_HTML_ATTRIBUTES: &[(&str, &str)] = &[
     ("img", "srcset"),
     ("source", "srcset"),
@@ -398,6 +400,9 @@ impl Minifier<'_> {
             Namespace::HTML => {
                 ALLOW_TO_TRIM_HTML_ATTRIBUTES.contains(&(&element.tag_name, attribute_name))
             }
+            Namespace::SVG => {
+                ALLOW_TO_TRIM_SVG_ATTRIBUTES.contains(&(&element.tag_name, attribute_name))
+            }
             _ => false,
         }
     }
@@ -658,6 +663,16 @@ impl Minifier<'_> {
         }
     }
 
+    fn is_javascript_url_element(&self, element: &Element) -> bool {
+        match (element.namespace, &element.tag_name) {
+            (Namespace::HTML | Namespace::SVG, &js_word!("a")) => return true,
+            (Namespace::HTML, &js_word!("iframe")) => return true,
+            _ => {}
+        }
+
+        false
+    }
+
     fn is_preserved_comment(&self, data: &str) -> bool {
         if let Some(preserve_comments) = &self.options.preserve_comments {
             return preserve_comments.iter().any(|regex| regex.is_match(data));
@@ -2419,18 +2434,42 @@ impl VisitMut for Minifier<'_> {
                 _ if self.is_trimable_separated_attribute(current_element, &n.name) => {
                     let mut value = value.to_string();
 
-                    if self.options.normalize_attributes {
-                        value = value.trim().to_string();
-                    }
+                    let fallback = |n: &mut Attribute| {
+                        if self.options.normalize_attributes {
+                            n.value = Some(value.trim().into());
+                        }
+                    };
 
                     if self.need_minify_css() && n.name == js_word!("style") && !value.is_empty() {
-                        if let Some(minified) =
-                            self.minify_css(value, CssMinificationMode::ListOfDeclarations)
+                        let value = value.trim();
+
+                        if let Some(minified) = self
+                            .minify_css(value.to_string(), CssMinificationMode::ListOfDeclarations)
                         {
                             n.value = Some(minified.into());
+                        } else {
+                            fallback(n);
+                        }
+                    } else if self.need_minify_js()
+                        && self.is_javascript_url_element(current_element)
+                    {
+                        if value.trim().to_lowercase().starts_with("javascript:") {
+                            value = value.trim().chars().skip(11).collect();
+
+                            if let Some(minified) = self.minify_js(value, false, true) {
+                                let mut with_javascript =
+                                    String::with_capacity(11 + minified.len());
+
+                                with_javascript.push_str("javascript:");
+                                with_javascript.push_str(&minified);
+
+                                n.value = Some(with_javascript.into());
+                            }
+                        } else {
+                            fallback(n);
                         }
                     } else {
-                        n.value = Some(value.into());
+                        fallback(n);
                     }
                 }
                 _ if self.options.minify_additional_attributes.is_some() => {
diff --git a/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls-1/config.json b/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls-1/config.json
new file mode 100644
index 000000000000..9642d5c6c8ac
--- /dev/null
+++ b/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls-1/config.json
@@ -0,0 +1,3 @@
+{
+  "normalizeAttributes": false
+}
\ No newline at end of file
diff --git a/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls-1/input.html b/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls-1/input.html
new file mode 100644
index 000000000000..aa64850e0126
--- /dev/null
+++ b/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls-1/input.html
@@ -0,0 +1,21 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <title>Document</title>
+</head>
+<body>
+<a href="   javascript: alert(  'test'  )  ">a</a>
+<a href="   JAVASCRIPT: alert(  'test'  )  ">b</a>
+<iframe src="javascript: alert(  'test'  )  " frameborder="0"></iframe>
+<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
+    <!-- A link around a shape -->
+    <a href="javascript: alert(  'test'  )  ">
+        <circle cx="50" cy="40" r="35" />
+    </a>
+    <!-- A link around a text -->
+    <a href="   javascript: alert(  'test'  )  ">
+        <text x="50" y="90" text-anchor="middle">&lt;circle&gt;</text>
+    </a>
+</svg>
+</body>
+</html>
\ No newline at end of file
diff --git a/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls-1/output.min.html b/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls-1/output.min.html
new file mode 100644
index 000000000000..1de4baf4ff3d
--- /dev/null
+++ b/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls-1/output.min.html
@@ -0,0 +1,13 @@
+<!doctype html><html lang=en><title>Document</title><a href='javascript:alert("test")'>a</a>
+<a href='javascript:alert("test")'>b</a>
+<iframe src='javascript:alert("test")' frameborder=0></iframe>
+<svg viewBox="0 0 100 100">
+    
+    <a href='javascript:alert("test")'>
+        <circle cx=50 cy=40 r=35 />
+    </a>
+    
+    <a href='javascript:alert("test")'>
+        <text x=50 y=90 text-anchor=middle>&lt;circle></text>
+    </a>
+</svg>
\ No newline at end of file
diff --git a/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls/input.html b/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls/input.html
new file mode 100644
index 000000000000..33311c0ed9dc
--- /dev/null
+++ b/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls/input.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <title>Document</title>
+</head>
+<body>
+<a href="   javascript: alert(  'test'  )  ">a</a>
+<a href="   JAVASCRIPT: alert(  'test'  )  ">b</a>
+<a href="   JAVASCRIPT: broken;;(  ">b</a>
+<iframe src="javascript: alert(  'test'  )  " frameborder="0"></iframe>
+<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
+    <!-- A link around a shape -->
+    <a href="javascript: alert(  'test'  )  ">
+        <circle cx="50" cy="40" r="35" />
+    </a>
+    <!-- A link around a text -->
+    <a href="   javascript: alert(  'test'  )  ">
+        <text x="50" y="90" text-anchor="middle">&lt;circle&gt;</text>
+    </a>
+</svg>
+</body>
+</html>
\ No newline at end of file
diff --git a/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls/output.min.html b/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls/output.min.html
new file mode 100644
index 000000000000..b15cf6a96d45
--- /dev/null
+++ b/crates/swc_html_minifier/tests/fixture/attribute/javascript-urls/output.min.html
@@ -0,0 +1,14 @@
+<!doctype html><html lang=en><title>Document</title><a href='javascript:alert("test")'>a</a>
+<a href='javascript:alert("test")'>b</a>
+<a href="   JAVASCRIPT: broken;;(  ">b</a>
+<iframe src='javascript:alert("test")' frameborder=0></iframe>
+<svg viewBox="0 0 100 100">
+    
+    <a href='javascript:alert("test")'>
+        <circle cx=50 cy=40 r=35 />
+    </a>
+    
+    <a href='javascript:alert("test")'>
+        <text x=50 y=90 text-anchor=middle>&lt;circle></text>
+    </a>
+</svg>
\ No newline at end of file
diff --git a/crates/swc_html_minifier/tests/fixture/element/svg/output.min.html b/crates/swc_html_minifier/tests/fixture/element/svg/output.min.html
index 30c2a48ac630..5fe09d4a6df9 100644
--- a/crates/swc_html_minifier/tests/fixture/element/svg/output.min.html
+++ b/crates/swc_html_minifier/tests/fixture/element/svg/output.min.html
@@ -286,7 +286,7 @@
 </svg>
 
 <svg>
-    <a href="  test.html  " ondragexit='alert("testtest")' rel="nofollow noindex">Test</a>
+    <a href=test.html ondragexit='alert("testtest")' rel="nofollow noindex">Test</a>
 </svg>
 
 <svg viewBox="0 0 100 100" width=160 height=60 y=30>