diff --git a/Libraries/LibWeb/CSS/FontFace.cpp b/Libraries/LibWeb/CSS/FontFace.cpp
index 60df8b1308e..7a259862240 100644
--- a/Libraries/LibWeb/CSS/FontFace.cpp
+++ b/Libraries/LibWeb/CSS/FontFace.cpp
@@ -483,6 +483,7 @@ GC::Ref<WebIDL::Promise> FontFace::load()
 
             // FIXME: The ParsedFontFace is kind of expensive to create. We should be using a shared sub-object for the data
             ParsedFontFace parsed_font_face {
+                nullptr,
                 font->m_family,
                 font->m_weight.to_number<int>(),
                 0,                      // FIXME: slope
diff --git a/Libraries/LibWeb/CSS/ParsedFontFace.cpp b/Libraries/LibWeb/CSS/ParsedFontFace.cpp
index e451f03d82e..5a9eda365a0 100644
--- a/Libraries/LibWeb/CSS/ParsedFontFace.cpp
+++ b/Libraries/LibWeb/CSS/ParsedFontFace.cpp
@@ -6,6 +6,7 @@
  */
 
 #include <LibWeb/CSS/CSSFontFaceDescriptors.h>
+#include <LibWeb/CSS/CSSRule.h>
 #include <LibWeb/CSS/ParsedFontFace.h>
 #include <LibWeb/CSS/StyleValues/CSSKeywordValue.h>
 #include <LibWeb/CSS/StyleValues/CalculatedStyleValue.h>
@@ -38,7 +39,7 @@ Vector<ParsedFontFace::Source> ParsedFontFace::sources_from_style_value(CSSStyle
             [&](FontSourceStyleValue::Local const& local) {
                 sources.empend(extract_font_name(local.name), OptionalNone {});
             },
-            [&](::URL::URL const& url) {
+            [&](URL const& url) {
                 // FIXME: tech()
                 sources.empend(url, font_source.format());
             });
@@ -171,6 +172,7 @@ ParsedFontFace ParsedFontFace::from_descriptors(CSSFontFaceDescriptors const& de
     }
 
     return ParsedFontFace {
+        descriptors.parent_rule()->parent_style_sheet(),
         move(font_family),
         move(weight),
         move(slope),
@@ -188,8 +190,9 @@ ParsedFontFace ParsedFontFace::from_descriptors(CSSFontFaceDescriptors const& de
     };
 }
 
-ParsedFontFace::ParsedFontFace(FlyString font_family, Optional<int> weight, Optional<int> slope, Optional<int> width, Vector<Source> sources, Vector<Gfx::UnicodeRange> unicode_ranges, Optional<Percentage> ascent_override, Optional<Percentage> descent_override, Optional<Percentage> line_gap_override, FontDisplay font_display, Optional<FlyString> font_named_instance, Optional<FlyString> font_language_override, Optional<OrderedHashMap<FlyString, i64>> font_feature_settings, Optional<OrderedHashMap<FlyString, double>> font_variation_settings)
-    : m_font_family(move(font_family))
+ParsedFontFace::ParsedFontFace(GC::Ptr<CSSStyleSheet> parent_style_sheet, FlyString font_family, Optional<int> weight, Optional<int> slope, Optional<int> width, Vector<Source> sources, Vector<Gfx::UnicodeRange> unicode_ranges, Optional<Percentage> ascent_override, Optional<Percentage> descent_override, Optional<Percentage> line_gap_override, FontDisplay font_display, Optional<FlyString> font_named_instance, Optional<FlyString> font_language_override, Optional<OrderedHashMap<FlyString, i64>> font_feature_settings, Optional<OrderedHashMap<FlyString, double>> font_variation_settings)
+    : m_parent_style_sheet(parent_style_sheet)
+    , m_font_family(move(font_family))
     , m_font_named_instance(move(font_named_instance))
     , m_weight(weight)
     , m_slope(slope)
diff --git a/Libraries/LibWeb/CSS/ParsedFontFace.h b/Libraries/LibWeb/CSS/ParsedFontFace.h
index 7322a64d1e9..96d6642eaa0 100644
--- a/Libraries/LibWeb/CSS/ParsedFontFace.h
+++ b/Libraries/LibWeb/CSS/ParsedFontFace.h
@@ -10,16 +10,16 @@
 #include <AK/FlyString.h>
 #include <AK/HashMap.h>
 #include <LibGfx/Font/UnicodeRange.h>
-#include <LibURL/URL.h>
 #include <LibWeb/CSS/Enums.h>
 #include <LibWeb/CSS/Percentage.h>
+#include <LibWeb/CSS/URL.h>
 
 namespace Web::CSS {
 
 class ParsedFontFace {
 public:
     struct Source {
-        Variant<FlyString, ::URL::URL> local_or_url;
+        Variant<FlyString, URL> local_or_url;
         // FIXME: Do we need to keep this around, or is it only needed to discard unwanted formats during parsing?
         Optional<FlyString> format;
     };
@@ -27,9 +27,10 @@ public:
     static Vector<Source> sources_from_style_value(CSSStyleValue const&);
     static ParsedFontFace from_descriptors(CSSFontFaceDescriptors const&);
 
-    ParsedFontFace(FlyString font_family, Optional<int> weight, Optional<int> slope, Optional<int> width, Vector<Source> sources, Vector<Gfx::UnicodeRange> unicode_ranges, Optional<Percentage> ascent_override, Optional<Percentage> descent_override, Optional<Percentage> line_gap_override, FontDisplay font_display, Optional<FlyString> font_named_instance, Optional<FlyString> font_language_override, Optional<OrderedHashMap<FlyString, i64>> font_feature_settings, Optional<OrderedHashMap<FlyString, double>> font_variation_settings);
+    ParsedFontFace(GC::Ptr<CSSStyleSheet> parent_style_sheet, FlyString font_family, Optional<int> weight, Optional<int> slope, Optional<int> width, Vector<Source> sources, Vector<Gfx::UnicodeRange> unicode_ranges, Optional<Percentage> ascent_override, Optional<Percentage> descent_override, Optional<Percentage> line_gap_override, FontDisplay font_display, Optional<FlyString> font_named_instance, Optional<FlyString> font_language_override, Optional<OrderedHashMap<FlyString, i64>> font_feature_settings, Optional<OrderedHashMap<FlyString, double>> font_variation_settings);
     ~ParsedFontFace() = default;
 
+    GC::Ptr<CSSStyleSheet> parent_style_sheet() const { return m_parent_style_sheet; }
     Optional<Percentage> ascent_override() const { return m_ascent_override; }
     Optional<Percentage> descent_override() const { return m_descent_override; }
     FontDisplay font_display() const { return m_font_display; }
@@ -46,6 +47,7 @@ public:
     Vector<Gfx::UnicodeRange> const& unicode_ranges() const { return m_unicode_ranges; }
 
 private:
+    GC::Ptr<CSSStyleSheet> m_parent_style_sheet;
     FlyString m_font_family;
     Optional<FlyString> m_font_named_instance;
     Optional<int> m_weight;
diff --git a/Libraries/LibWeb/CSS/Parser/ValueParsing.cpp b/Libraries/LibWeb/CSS/Parser/ValueParsing.cpp
index ff2f180b179..4c7542414de 100644
--- a/Libraries/LibWeb/CSS/Parser/ValueParsing.cpp
+++ b/Libraries/LibWeb/CSS/Parser/ValueParsing.cpp
@@ -3813,10 +3813,6 @@ RefPtr<FontSourceStyleValue const> Parser::parse_font_source_value(TokenStream<C
     auto url = parse_url_function(tokens);
     if (!url.has_value())
         return nullptr;
-    // FIXME: Stop completing the URL here
-    auto completed_url = complete_url(url->url());
-    if (!completed_url.has_value())
-        return nullptr;
 
     Optional<FlyString> format;
 
@@ -3859,7 +3855,7 @@ RefPtr<FontSourceStyleValue const> Parser::parse_font_source_value(TokenStream<C
     // FIXME: [ tech( <font-tech>#)]?
 
     transaction.commit();
-    return FontSourceStyleValue::create(completed_url.release_value(), move(format));
+    return FontSourceStyleValue::create(url.release_value(), move(format));
 }
 
 NonnullRefPtr<CSSStyleValue const> Parser::resolve_unresolved_style_value(ParsingParams const& context, DOM::Element& element, Optional<PseudoElement> pseudo_element, PropertyID property_id, UnresolvedStyleValue const& unresolved)
diff --git a/Libraries/LibWeb/CSS/StyleComputer.cpp b/Libraries/LibWeb/CSS/StyleComputer.cpp
index 7a6fc8682d3..57fce2fd892 100644
--- a/Libraries/LibWeb/CSS/StyleComputer.cpp
+++ b/Libraries/LibWeb/CSS/StyleComputer.cpp
@@ -187,8 +187,9 @@ StyleComputer::StyleComputer(DOM::Document& document)
 
 StyleComputer::~StyleComputer() = default;
 
-FontLoader::FontLoader(StyleComputer& style_computer, FlyString family_name, Vector<Gfx::UnicodeRange> unicode_ranges, Vector<::URL::URL> urls, Function<void(RefPtr<Gfx::Typeface const>)> on_load)
+FontLoader::FontLoader(StyleComputer& style_computer, GC::Ptr<CSSStyleSheet> parent_style_sheet, FlyString family_name, Vector<Gfx::UnicodeRange> unicode_ranges, Vector<URL> urls, Function<void(RefPtr<Gfx::Typeface const>)> on_load)
     : m_style_computer(style_computer)
+    , m_parent_style_sheet(parent_style_sheet)
     , m_family_name(move(family_name))
     , m_unicode_ranges(move(unicode_ranges))
     , m_urls(move(urls))
@@ -225,8 +226,8 @@ void FontLoader::start_loading_next_url()
     // To fetch a font given a selected <url> url for @font-face rule, fetch url, with stylesheet being rule’s parent
     // CSS style sheet, destination "font", CORS mode "cors", and processResponse being the following steps given
     // response res and null, failure or a byte stream stream:
-    // FIXME: Get the rule's parent style sheet from somewhere
-    auto maybe_fetch_controller = fetch_a_style_resource(m_urls.take_first(), GC::Ref { m_style_computer.document() }, Fetch::Infrastructure::Request::Destination::Font, CorsMode::Cors,
+    auto style_sheet_or_document = m_parent_style_sheet ? StyleSheetOrDocument { *m_parent_style_sheet } : StyleSheetOrDocument { m_style_computer.document() };
+    auto maybe_fetch_controller = fetch_a_style_resource(m_urls.take_first(), style_sheet_or_document, Fetch::Infrastructure::Request::Destination::Font, CorsMode::Cors,
         [weak_loader = make_weak_ptr()](auto response, auto stream) {
             // NB: If the FontLoader died before this fetch completed, nobody wants the data.
             if (weak_loader.is_null())
@@ -3049,11 +3050,10 @@ Optional<FontLoader&> StyleComputer::load_font_face(ParsedFontFace const& font_f
     };
 
     // FIXME: Pass the sources directly, so the font loader can make use of the format information, or load local fonts.
-    Vector<::URL::URL> urls;
+    Vector<URL> urls;
     for (auto const& source : font_face.sources()) {
-        // FIXME: These should be loaded relative to the stylesheet URL instead of the document URL.
-        if (source.local_or_url.has<::URL::URL>())
-            urls.append(*m_document->encoding_parse_url(source.local_or_url.get<::URL::URL>().to_string()));
+        if (source.local_or_url.has<URL>())
+            urls.append(source.local_or_url.get<URL>());
         // FIXME: Handle local()
     }
 
@@ -3063,7 +3063,7 @@ Optional<FontLoader&> StyleComputer::load_font_face(ParsedFontFace const& font_f
         return {};
     }
 
-    auto loader = make<FontLoader>(*this, font_face.font_family(), font_face.unicode_ranges(), move(urls), move(on_load));
+    auto loader = make<FontLoader>(*this, font_face.parent_style_sheet(), font_face.font_family(), font_face.unicode_ranges(), move(urls), move(on_load));
     auto& loader_ref = *loader;
     auto maybe_font_loaders_list = m_loaded_fonts.get(key);
     if (maybe_font_loaders_list.has_value()) {
diff --git a/Libraries/LibWeb/CSS/StyleComputer.h b/Libraries/LibWeb/CSS/StyleComputer.h
index 9a9834d9e42..05dd8fd0a66 100644
--- a/Libraries/LibWeb/CSS/StyleComputer.h
+++ b/Libraries/LibWeb/CSS/StyleComputer.h
@@ -315,7 +315,7 @@ private:
 
 class FontLoader : public Weakable<FontLoader> {
 public:
-    FontLoader(StyleComputer& style_computer, FlyString family_name, Vector<Gfx::UnicodeRange> unicode_ranges, Vector<::URL::URL> urls, ESCAPING Function<void(RefPtr<Gfx::Typeface const>)> on_load = {});
+    FontLoader(StyleComputer& style_computer, GC::Ptr<CSSStyleSheet> parent_style_sheet, FlyString family_name, Vector<Gfx::UnicodeRange> unicode_ranges, Vector<URL> urls, ESCAPING Function<void(RefPtr<Gfx::Typeface const>)> on_load = {});
 
     virtual ~FontLoader();
 
@@ -333,10 +333,11 @@ private:
     void font_did_load_or_fail(RefPtr<Gfx::Typeface const>);
 
     StyleComputer& m_style_computer;
+    GC::Ptr<CSSStyleSheet> m_parent_style_sheet;
     FlyString m_family_name;
     Vector<Gfx::UnicodeRange> m_unicode_ranges;
     RefPtr<Gfx::Typeface const> m_vector_font;
-    Vector<::URL::URL> m_urls;
+    Vector<URL> m_urls;
     GC::Root<Fetch::Infrastructure::FetchController> m_fetch_controller;
     Function<void(RefPtr<Gfx::Typeface const>)> m_on_load;
 };
diff --git a/Libraries/LibWeb/CSS/StyleValues/FontSourceStyleValue.cpp b/Libraries/LibWeb/CSS/StyleValues/FontSourceStyleValue.cpp
index ee8cb1641db..eae65e1e34e 100644
--- a/Libraries/LibWeb/CSS/StyleValues/FontSourceStyleValue.cpp
+++ b/Libraries/LibWeb/CSS/StyleValues/FontSourceStyleValue.cpp
@@ -34,11 +34,11 @@ String FontSourceStyleValue::to_string(SerializationMode) const
             builder.append(')');
             return builder.to_string_without_validation();
         },
-        [this](::URL::URL const& url) {
+        [this](URL const& url) {
             // <url> [ format(<font-format>)]? [ tech( <font-tech>#)]?
             // FIXME: tech()
             StringBuilder builder;
-            serialize_a_url(builder, url.to_string());
+            builder.append(url.to_string());
 
             if (m_format.has_value()) {
                 builder.append(" format("sv);
@@ -59,8 +59,8 @@ bool FontSourceStyleValue::properties_equal(FontSourceStyleValue const& other) c
             }
             return false;
         },
-        [&other](::URL::URL const& url) {
-            if (auto* other_url = other.m_source.get_pointer<::URL::URL>()) {
+        [&other](URL const& url) {
+            if (auto* other_url = other.m_source.get_pointer<URL>()) {
                 return url == *other_url;
             }
             return false;
diff --git a/Libraries/LibWeb/CSS/StyleValues/FontSourceStyleValue.h b/Libraries/LibWeb/CSS/StyleValues/FontSourceStyleValue.h
index 4fa02aa9529..60fed041d8c 100644
--- a/Libraries/LibWeb/CSS/StyleValues/FontSourceStyleValue.h
+++ b/Libraries/LibWeb/CSS/StyleValues/FontSourceStyleValue.h
@@ -8,6 +8,7 @@
 
 #include <AK/FlyString.h>
 #include <LibWeb/CSS/CSSStyleValue.h>
+#include <LibWeb/CSS/URL.h>
 
 namespace Web::CSS {
 
@@ -16,7 +17,7 @@ public:
     struct Local {
         NonnullRefPtr<CSSStyleValue const> name;
     };
-    using Source = Variant<Local, ::URL::URL>;
+    using Source = Variant<Local, URL>;
 
     static ValueComparingNonnullRefPtr<FontSourceStyleValue const> create(Source source, Optional<FlyString> format)
     {
diff --git a/Libraries/LibWeb/Dump.cpp b/Libraries/LibWeb/Dump.cpp
index e7d140a119b..7fa222b8f42 100644
--- a/Libraries/LibWeb/Dump.cpp
+++ b/Libraries/LibWeb/Dump.cpp
@@ -728,12 +728,15 @@ void dump_font_face_rule(StringBuilder& builder, CSS::CSSFontFaceRule const& rul
 
     indent(builder, indent_levels + 1);
     builder.append("sources:\n"sv);
-    for (auto const& source : font_face.sources()) {
+    for (auto const& [local_or_url, format] : font_face.sources()) {
         indent(builder, indent_levels + 2);
-        if (source.local_or_url.has<URL::URL>())
-            builder.appendff("url={}, format={}\n", source.local_or_url.get<URL::URL>(), source.format.value_or("???"_string));
-        else
-            builder.appendff("local={}\n", source.local_or_url.get<FlyString>());
+        local_or_url.visit(
+            [&builder, &format](CSS::URL const& url) {
+                builder.appendff("url={}, format={}\n", url, format.value_or("???"_string));
+            },
+            [&builder](FlyString const& local) {
+                builder.appendff("local={}\n", local);
+            });
     }
 
     indent(builder, indent_levels + 1);