diff --git a/mozglue/baseprofiler/core/ProfilerMarkers.cpp b/mozglue/baseprofiler/core/ProfilerMarkers.cpp
index 2a6115c16691..c4c9cef51807 100644
--- a/mozglue/baseprofiler/core/ProfilerMarkers.cpp
+++ b/mozglue/baseprofiler/core/ProfilerMarkers.cpp
@@ -320,6 +320,8 @@ Span<const char> MarkerSchema::FormatToStringSpan(
       return mozilla::MakeStringSpan("url");
     case Format::FilePath:
       return mozilla::MakeStringSpan("file-path");
+    case Format::SanitizedString:
+      return mozilla::MakeStringSpan("sanitized-string");
     case Format::String:
       return mozilla::MakeStringSpan("string");
     case Format::UniqueString:
diff --git a/mozglue/baseprofiler/public/BaseAndGeckoProfilerDetail.h b/mozglue/baseprofiler/public/BaseAndGeckoProfilerDetail.h
index f3cb539f6439..fc360041b9b3 100644
--- a/mozglue/baseprofiler/public/BaseAndGeckoProfilerDetail.h
+++ b/mozglue/baseprofiler/public/BaseAndGeckoProfilerDetail.h
@@ -24,7 +24,7 @@ namespace mozilla {
 class ProfileBufferChunkManagerWithLocalLimit;
 
 // Centrally defines the version of the gecko profiler JSON format.
-const int GECKO_PROFILER_FORMAT_VERSION = 29;
+const int GECKO_PROFILER_FORMAT_VERSION = 30;
 
 namespace baseprofiler::detail {
 
diff --git a/mozglue/baseprofiler/public/BaseProfilerMarkersPrerequisites.h b/mozglue/baseprofiler/public/BaseProfilerMarkersPrerequisites.h
index c1de8955a7e5..3a57ebab3933 100644
--- a/mozglue/baseprofiler/public/BaseProfilerMarkersPrerequisites.h
+++ b/mozglue/baseprofiler/public/BaseProfilerMarkersPrerequisites.h
@@ -736,6 +736,8 @@ class MarkerSchema {
     Url,
     // Show the file path, and handle PII sanitization.
     FilePath,
+    // Show arbitrary string and handle PII sanitization
+    SanitizedString,
     // Important, do not put URL or file path information here, as it will not
     // be sanitized. Please be careful with including other types of PII here as
     // well.
diff --git a/tools/profiler/tests/gtest/GeckoProfiler.cpp b/tools/profiler/tests/gtest/GeckoProfiler.cpp
index 2e9790c8c99a..4e07f03339be 100644
--- a/tools/profiler/tests/gtest/GeckoProfiler.cpp
+++ b/tools/profiler/tests/gtest/GeckoProfiler.cpp
@@ -2430,6 +2430,9 @@ TEST(GeckoProfiler, Markers)
       schema.AddKeyFormat("key with decimal", MS::Format::Decimal);
       schema.AddStaticLabelValue("static label", "static value");
       schema.AddKeyFormat("key with unique string", MS::Format::UniqueString);
+      schema.AddKeyFormatSearchable("key with sanitized string",
+                                    MS::Format::SanitizedString,
+                                    MS::Searchable::Searchable);
       return schema;
     }
   };
@@ -3358,7 +3361,7 @@ TEST(GeckoProfiler, Markers)
             EXPECT_EQ_JSON(schema["tooltipLabel"], String, "tooltip label");
             EXPECT_EQ_JSON(schema["tableLabel"], String, "table label");
 
-            ASSERT_EQ(data.size(), 15u);
+            ASSERT_EQ(data.size(), 16u);
 
             ASSERT_TRUE(data[0u].isObject());
             EXPECT_EQ_JSON(data[0u]["key"], String, "key with url");
@@ -3450,6 +3453,12 @@ TEST(GeckoProfiler, Markers)
             EXPECT_EQ_JSON(data[14u]["format"], String, "unique-string");
             EXPECT_TRUE(data[14u]["searchable"].isNull());
 
+            ASSERT_TRUE(data[15u].isObject());
+            EXPECT_EQ_JSON(data[15u]["key"], String,
+                           "key with sanitized string");
+            EXPECT_TRUE(data[15u]["label"].isNull());
+            EXPECT_EQ_JSON(data[15u]["format"], String, "sanitized-string");
+            EXPECT_EQ_JSON(data[15u]["searchable"], Bool, true);
           } else if (nameString == "markers-gtest-special") {
             EXPECT_EQ(display.size(), 0u);
             ASSERT_EQ(data.size(), 0u);