diff --git a/Libraries/LibWeb/DOM/Document.cpp b/Libraries/LibWeb/DOM/Document.cpp
index 8faedbd21ae..edbd84152a0 100644
--- a/Libraries/LibWeb/DOM/Document.cpp
+++ b/Libraries/LibWeb/DOM/Document.cpp
@@ -198,9 +198,9 @@ static GC::Ref<HTML::BrowsingContext> obtain_a_browsing_context_to_use_for_a_nav
     // 9. If swapGroup is false, then:
     if (!swap_group) {
         // 1. If coopEnforcementResult's would need a browsing context group switch due to report-only is true,
-        //    set browsing context's virtual browsing context group ID to a new unique identifier.
+        //    set browsingContext's virtual browsing context group ID to a new unique identifier.
         if (coop_enforcement_result.would_need_a_browsing_context_group_switch_due_to_report_only) {
-            // FIXME: set browsing context's virtual browsing context group ID to a new unique identifier.
+            // FIXME: set browsingContext's virtual browsing context group ID to a new unique identifier.
         }
 
         // 2. Return browsingContext.
@@ -3945,7 +3945,7 @@ void Document::destroy_a_document_and_its_descendants(GC::Ptr<GC::Function<void(
     // 3. Let numberDestroyed be 0.
     IGNORE_USE_IN_ESCAPING_LAMBDA size_t number_destroyed = 0;
 
-    // 4. For each childNavigable of childNavigable's, queue a global task on the navigation and traversal task source
+    // 4. For each childNavigable of childNavigables, queue a global task on the navigation and traversal task source
     //    given childNavigable's active window to perform the following steps:
     for (auto& child_navigable : child_navigables) {
         HTML::queue_global_task(HTML::Task::Source::NavigationAndTraversal, *child_navigable->active_window(), GC::create_function(heap(), [&heap = heap(), &number_destroyed, child_navigable = child_navigable.ptr()] {
diff --git a/Libraries/LibWeb/HTML/CrossOrigin/AbstractOperations.cpp b/Libraries/LibWeb/HTML/CrossOrigin/AbstractOperations.cpp
index f20acc43c13..996fb03a85a 100644
--- a/Libraries/LibWeb/HTML/CrossOrigin/AbstractOperations.cpp
+++ b/Libraries/LibWeb/HTML/CrossOrigin/AbstractOperations.cpp
@@ -224,8 +224,7 @@ JS::ThrowCompletionOr<bool> cross_origin_set(JS::VM& vm, JS::Object& object, JS:
 
     // 3. If desc.[[Set]] is present and its value is not undefined, then:
     if (descriptor->set.has_value() && *descriptor->set) {
-        // FIXME: Spec issue, `setter` isn't being defined.
-        // 1. Perform ? Call(setter, Receiver, «V»).
+        // 1. Perform ? Call(desc.[[Set]], Receiver, « V »).
         TRY(JS::call(vm, *descriptor->set, receiver, value));
 
         // 2. Return true.
diff --git a/Libraries/LibWeb/HTML/HTMLDialogElement.cpp b/Libraries/LibWeb/HTML/HTMLDialogElement.cpp
index ad4910f3ece..4b9fa0710fd 100644
--- a/Libraries/LibWeb/HTML/HTMLDialogElement.cpp
+++ b/Libraries/LibWeb/HTML/HTMLDialogElement.cpp
@@ -124,7 +124,7 @@ WebIDL::ExceptionOr<void> HTMLDialogElement::show()
     if (has_attribute(AttributeNames::open))
         return {};
 
-    // 5. Queue a dialog toggle event task given subject, "closed", and "open".
+    // 5. Queue a dialog toggle event task given this, "closed", and "open".
     queue_a_dialog_toggle_event_task("closed"_string, "open"_string);
 
     // 6. Add an open attribute to this, whose value is the empty string.
diff --git a/Libraries/LibWeb/HTML/HTMLImageElement.cpp b/Libraries/LibWeb/HTML/HTMLImageElement.cpp
index 406ef67749b..2364956286f 100644
--- a/Libraries/LibWeb/HTML/HTMLImageElement.cpp
+++ b/Libraries/LibWeb/HTML/HTMLImageElement.cpp
@@ -496,7 +496,7 @@ ErrorOr<void> HTMLImageElement::update_the_image_data(bool restart_animations, b
     //           then abort the image request for the current request and the pending request,
     //           set current request's state to unavailable, set pending request to null, and return.
 
-    // 3. Let previous URL be the current request's current URL.
+    // 3. Let previousURL be the current request's current URL.
     auto previous_url = m_current_request->current_url();
 
     // 4. Let selected source be null and selected pixel density be undefined.
@@ -549,7 +549,7 @@ ErrorOr<void> HTMLImageElement::update_the_image_data(bool restart_animations, b
             m_current_request->set_image_data(entry->image_data);
             m_current_request->set_state(ImageRequest::State::CompletelyAvailable);
 
-            // 5. Prepare current request for presentation given img.
+            // 5. Prepare current request for presentation given the img element.
             m_current_request->prepare_for_presentation(*this);
 
             // 6. Set current request's current pixel density to selected pixel density.
diff --git a/Libraries/LibWeb/HTML/HTMLInputElement.cpp b/Libraries/LibWeb/HTML/HTMLInputElement.cpp
index e4bfe296f1f..bc2c55365e2 100644
--- a/Libraries/LibWeb/HTML/HTMLInputElement.cpp
+++ b/Libraries/LibWeb/HTML/HTMLInputElement.cpp
@@ -1399,7 +1399,7 @@ WebIDL::ExceptionOr<void> HTMLInputElement::handle_src_attribute(String const& v
     request->set_credentials_mode(Fetch::Infrastructure::Request::CredentialsMode::Include);
     request->set_use_url_credentials(true);
 
-    // 4. Fetch request, with processResponseEndOfBody set to the following step given response response:
+    // 4. Fetch request, with processResponseEndOfBody set to the following steps given response response:
     m_resource_request = SharedResourceRequest::get_or_create(realm, document().page(), request->url());
     m_resource_request->add_callbacks(
         [this, &realm]() {
@@ -2376,13 +2376,15 @@ WebIDL::ExceptionOr<void> HTMLInputElement::step_up_or_down(bool is_down, WebIDL
     }
 
     // 8. If the element has a minimum, and value is less than that minimum, then set value to the smallest value that,
-    // when subtracted from the step base, is an integral multiple of the allowed value step, and that is more than or equal to minimum.
+    //    when subtracted from the step base, is an integral multiple of the allowed value step, and that is more than
+    //    or equal to that minimum.
     if (maybe_minimum.has_value() && value < *maybe_minimum) {
         value = AK::max(value, *maybe_minimum);
     }
 
     // 9. If the element has a maximum, and value is greater than that maximum, then set value to the largest value that,
-    // when subtracted from the step base, is an integral multiple of the allowed value step, and that is less than or equal to maximum.
+    //    when subtracted from the step base, is an integral multiple of the allowed value step, and that is less than
+    //    or equal to that maximum.
     if (maybe_maximum.has_value() && value > *maybe_maximum) {
         value = AK::min(value, *maybe_maximum);
     }
diff --git a/Libraries/LibWeb/HTML/HTMLOrSVGElement.cpp b/Libraries/LibWeb/HTML/HTMLOrSVGElement.cpp
index 2158479efdd..b0d88aa6c15 100644
--- a/Libraries/LibWeb/HTML/HTMLOrSVGElement.cpp
+++ b/Libraries/LibWeb/HTML/HTMLOrSVGElement.cpp
@@ -98,7 +98,7 @@ void HTMLOrSVGElement<ElementBase>::inserted()
     [[maybe_unused]] auto policy_container = element.shadow_including_root().document().policy_container();
 
     // FIXME: 2. If CSP list contains a header-delivered Content Security Policy, and element has a
-    //           nonce content attribute attr whose value is not the empty string, then:
+    //           nonce content attribute whose value is not the empty string, then:
     if (true && element.has_attribute(HTML::AttributeNames::nonce)) {
         // 2.1. Let nonce be element's [[CryptographicNonce]].
         auto nonce = m_cryptographic_nonce;
diff --git a/Libraries/LibWeb/HTML/MimeTypeArray.cpp b/Libraries/LibWeb/HTML/MimeTypeArray.cpp
index b41b857c6a1..cdb36c9e975 100644
--- a/Libraries/LibWeb/HTML/MimeTypeArray.cpp
+++ b/Libraries/LibWeb/HTML/MimeTypeArray.cpp
@@ -65,7 +65,7 @@ GC::Ptr<MimeType> MimeTypeArray::item(u32 index) const
     auto& window = as<HTML::Window>(HTML::relevant_global_object(*this));
     auto mime_types = window.pdf_viewer_mime_type_objects();
 
-    // 2. If index < mimeType's size, then return mimeTypes[index].
+    // 2. If index < mimeTypes's size, then return mimeTypes[index].
     if (index < mime_types.size())
         return mime_types[index];
 
diff --git a/Libraries/LibWeb/HTML/Navigation.cpp b/Libraries/LibWeb/HTML/Navigation.cpp
index 38822ac9624..0d171f121d8 100644
--- a/Libraries/LibWeb/HTML/Navigation.cpp
+++ b/Libraries/LibWeb/HTML/Navigation.cpp
@@ -605,8 +605,7 @@ GC::Ref<NavigationAPIMethodTracker> Navigation::add_an_upcoming_traverse_api_met
         /* .committed_promise = */ committed_promise,
         /* .finished_promise = */ finished_promise);
 
-    // 4. Set navigation's upcoming traverse API method trackers[key] to apiMethodTracker.
-    // FIXME: Fix spec typo key --> destinationKey
+    // 4. Set navigation's upcoming traverse API method trackers[destinationKey] to apiMethodTracker.
     m_upcoming_traverse_api_method_trackers.set(destination_key, api_method_tracker);
 
     // 5. Return apiMethodTracker.
@@ -1116,9 +1115,8 @@ bool Navigation::inner_navigate_event_firing_algorithm(
         if (navigation_type == Bindings::NavigationType::Traverse)
             m_suppress_scroll_restoration_during_ongoing_navigation = true;
 
-        // FIXME: Fix spec typo "serialied"
         // 7. If navigationType is "push" or "replace", then run the URL and history update steps given document and
-        //    event's destination's URL, with serialiedData set to event's classic history API state and historyHandling
+        //    event's destination's URL, with serializedData set to event's classic history API state and historyHandling
         //    set to navigationType.
         if (navigation_type == Bindings::NavigationType::Push || navigation_type == Bindings::NavigationType::Replace) {
             auto history_handling = navigation_type == Bindings::NavigationType::Push ? HistoryHandlingBehavior::Push : HistoryHandlingBehavior::Replace;
diff --git a/Libraries/LibWeb/HTML/Parser/StackOfOpenElements.cpp b/Libraries/LibWeb/HTML/Parser/StackOfOpenElements.cpp
index c01022081a3..2efe5bce987 100644
--- a/Libraries/LibWeb/HTML/Parser/StackOfOpenElements.cpp
+++ b/Libraries/LibWeb/HTML/Parser/StackOfOpenElements.cpp
@@ -83,7 +83,7 @@ bool StackOfOpenElements::has_in_select_scope(FlyString const& tag_name) const
     // https://html.spec.whatwg.org/multipage/parsing.html#has-an-element-in-the-specific-scope
     // 1. Initialize node to be the current node (the bottommost node of the stack).
     for (auto& node : m_elements.in_reverse()) {
-        // 2. If node is the target node, terminate in a match state.
+        // 2. If node is target node, terminate in a match state.
         if (node->local_name() == tag_name)
             return true;
         // 3. Otherwise, if node is one of the element types in list, terminate in a failure state.
@@ -92,8 +92,8 @@ bool StackOfOpenElements::has_in_select_scope(FlyString const& tag_name) const
             return false;
         // 4. Otherwise, set node to the previous entry in the stack of open elements and return to step 2.
     }
-    // [4.] (This will never fail, since the loop will always terminate in the previous step if the top of the stack
-    // — an html element — is reached.)
+    // NOTE: This will never fail, since the loop will always terminate in the previous step if the top of the stack
+    //       — an html element — is reached.
     VERIFY_NOT_REACHED();
 }
 
diff --git a/Libraries/LibWeb/HTML/Plugin.cpp b/Libraries/LibWeb/HTML/Plugin.cpp
index 023ee992090..23e76743fbb 100644
--- a/Libraries/LibWeb/HTML/Plugin.cpp
+++ b/Libraries/LibWeb/HTML/Plugin.cpp
@@ -89,7 +89,7 @@ GC::Ptr<MimeType> Plugin::item(u32 index) const
     auto& window = as<HTML::Window>(HTML::relevant_global_object(*this));
     auto mime_types = window.pdf_viewer_mime_type_objects();
 
-    // 2. If index < mimeType's size, then return mimeTypes[index].
+    // 2. If index < mimeTypes's size, then return mimeTypes[index].
     if (index < mime_types.size())
         return mime_types[index];
 
diff --git a/Libraries/LibWeb/HTML/PotentialCORSRequest.cpp b/Libraries/LibWeb/HTML/PotentialCORSRequest.cpp
index b00deb2e95a..af4727bfac5 100644
--- a/Libraries/LibWeb/HTML/PotentialCORSRequest.cpp
+++ b/Libraries/LibWeb/HTML/PotentialCORSRequest.cpp
@@ -29,8 +29,8 @@ create_potential_CORS_request(JS::VM& vm, URL::URL const& url, Optional<Fetch::I
     if (cors_attribute_state == CORSSettingAttribute::Anonymous)
         credentials_mode = Fetch::Infrastructure::Request::CredentialsMode::SameOrigin;
 
-    // 5. Let request be a new request whose URL is url, destination is destination, mode is mode, credentials mode is credentialsMode,
-    // and whose use-URL-credentials flag is set.
+    // 5. Return a new request whose URL is url, destination is destination, mode is mode, credentials mode is credentialsMode,
+    //    and whose use-URL-credentials flag is set.
     auto request = Fetch::Infrastructure::Request::create(vm);
     request->set_url(url);
     request->set_destination(destination);
diff --git a/Libraries/LibWeb/HTML/SourceSet.cpp b/Libraries/LibWeb/HTML/SourceSet.cpp
index 8afaf6edaf0..129fb82071f 100644
--- a/Libraries/LibWeb/HTML/SourceSet.cpp
+++ b/Libraries/LibWeb/HTML/SourceSet.cpp
@@ -419,7 +419,7 @@ void SourceSet::normalize_source_densities(DOM::Element const& element)
 
         // 2. Otherwise, if the image source has a width descriptor,
         //    replace the width descriptor with a pixel density descriptor
-        //    with a value of the width descriptor value divided by the source size and a unit of x.
+        //    with a value of the width descriptor value divided by source size and a unit of x.
         auto descriptor_value_set = false;
         if (image_source.descriptor.has<ImageSource::WidthDescriptorValue>()) {
             auto& width_descriptor = image_source.descriptor.get<ImageSource::WidthDescriptorValue>();
diff --git a/Libraries/LibWeb/HTML/TraversableNavigable.cpp b/Libraries/LibWeb/HTML/TraversableNavigable.cpp
index f27ecfbbe37..a2c363599ff 100644
--- a/Libraries/LibWeb/HTML/TraversableNavigable.cpp
+++ b/Libraries/LibWeb/HTML/TraversableNavigable.cpp
@@ -958,13 +958,13 @@ TraversableNavigable::CheckIfUnloadingIsCanceledResult TraversableNavigable::che
         }
     }
 
-    // 5. Let totalTasks be the size of documentsThatNeedBeforeunload.
+    // 5. Let totalTasks be the size of documentsToFireBeforeunload.
     IGNORE_USE_IN_ESCAPING_LAMBDA auto total_tasks = documents_to_fire_beforeunload.size();
 
     // 6. Let completedTasks be 0.
     IGNORE_USE_IN_ESCAPING_LAMBDA size_t completed_tasks = 0;
 
-    // 7. For each document of documents, queue a global task on the navigation and traversal task source given document's relevant global object to run the steps:
+    // 7. For each document of documentsToFireBeforeunload, queue a global task on the navigation and traversal task source given document's relevant global object to run the steps:
     for (auto& document : documents_to_fire_beforeunload) {
         queue_global_task(Task::Source::NavigationAndTraversal, relevant_global_object(*document), GC::create_function(heap(), [document, &final_status, &completed_tasks, &unload_prompt_shown] {
             // 1. Let (unloadPromptShownForThisDocument, unloadPromptCanceledByThisDocument) be the result of running the steps to fire beforeunload given document and unloadPromptShown.