diff --git a/src/core/xfa/template.js b/src/core/xfa/template.js
index dfcc9fd68a309..d33454251edab 100644
--- a/src/core/xfa/template.js
+++ b/src/core/xfa/template.js
@@ -102,13 +102,12 @@ import {
   getStringOption,
   HTMLResult,
 } from "./utils.js";
-import { Util, warn } from "../../shared/util.js";
+import { SVG_NS, Util, warn } from "../../shared/util.js";
 import { getMetrics } from "./fonts.js";
 import { recoverJsURL } from "../core_utils.js";
 import { searchNode } from "./som.js";
 
 const TEMPLATE_NS_ID = NamespaceIds.template.id;
-const SVG_NS = "http://www.w3.org/2000/svg";
 
 // In case of lr-tb (and rl-tb) layouts, we try:
 //  - to put the container at the end of a line
diff --git a/src/display/annotation_layer.js b/src/display/annotation_layer.js
index 80af717fdfc23..4e0c840aafac5 100644
--- a/src/display/annotation_layer.js
+++ b/src/display/annotation_layer.js
@@ -38,6 +38,7 @@ import {
   LINE_FACTOR,
   makeArr,
   shadow,
+  SVG_NS,
   unreachable,
   Util,
   warn,
@@ -666,8 +667,7 @@ class AnnotationElement {
       style.borderWidth = 0;
       svgBuffer = [
         "url('data:image/svg+xml;utf8,",
-        `<svg xmlns="http://www.w3.org/2000/svg"`,
-        ` preserveAspectRatio="none" viewBox="0 0 1 1">`,
+        `<svg xmlns="${SVG_NS}" preserveAspectRatio="none" viewBox="0 0 1 1">`,
         `<g fill="transparent" stroke="${borderColor}" stroke-width="${borderWidth}">`,
       ];
       this.container.classList.add("hasBorder");
diff --git a/src/display/display_utils.js b/src/display/display_utils.js
index 3c44cc9e169aa..b64ccce103ce1 100644
--- a/src/display/display_utils.js
+++ b/src/display/display_utils.js
@@ -25,8 +25,6 @@ import { MathClamp } from "../shared/math_clamp.js";
 import { PageViewport } from "./page_viewport.js";
 import { XfaLayer } from "./xfa_layer.js";
 
-const SVG_NS = "http://www.w3.org/2000/svg";
-
 class PixelsPerInch {
   static CSS = 96.0;
 
@@ -844,5 +842,4 @@ export {
   StatTimer,
   stopEvent,
   SupportedImageMimeTypes,
-  SVG_NS,
 };
diff --git a/src/display/editor/tools.js b/src/display/editor/tools.js
index 331d9ab43b440..52ffdc83233f2 100644
--- a/src/display/editor/tools.js
+++ b/src/display/editor/tools.js
@@ -24,6 +24,7 @@ import {
   FeatureTest,
   getUuid,
   shadow,
+  SVG_NS,
   Util,
   warn,
 } from "../../shared/util.js";
@@ -170,7 +171,7 @@ class ImageManager {
     // The "workaround" is to append "svgView(preserveAspectRatio(none))" to the
     // url, but according to comment #15, it seems that it leads to unexpected
     // behavior in Safari.
-    const svg = `data:image/svg+xml;charset=UTF-8,<svg viewBox="0 0 1 1" width="1" height="1" xmlns="http://www.w3.org/2000/svg"><rect width="1" height="1" style="fill:red;"/></svg>`;
+    const svg = `data:image/svg+xml;charset=UTF-8,<svg viewBox="0 0 1 1" width="1" height="1" xmlns="${SVG_NS}"><rect width="1" height="1" style="fill:red;"/></svg>`;
     const canvas = new OffscreenCanvas(1, 3);
     const ctx = canvas.getContext("2d", { willReadFrequently: true });
     const image = new Image();
diff --git a/src/display/filter_factory.js b/src/display/filter_factory.js
index 32f69e4ec5848..3473d543dc878 100644
--- a/src/display/filter_factory.js
+++ b/src/display/filter_factory.js
@@ -13,8 +13,14 @@
  * limitations under the License.
  */
 
-import { getRGB, isDataScheme, SVG_NS } from "./display_utils.js";
-import { unreachable, updateUrlHash, Util, warn } from "../shared/util.js";
+import { getRGB, isDataScheme } from "./display_utils.js";
+import {
+  SVG_NS,
+  unreachable,
+  updateUrlHash,
+  Util,
+  warn,
+} from "../shared/util.js";
 
 class BaseFilterFactory {
   constructor() {
diff --git a/src/display/svg_factory.js b/src/display/svg_factory.js
index f9591a818499f..67c6a88973a31 100644
--- a/src/display/svg_factory.js
+++ b/src/display/svg_factory.js
@@ -13,8 +13,7 @@
  * limitations under the License.
  */
 
-import { SVG_NS } from "./display_utils.js";
-import { unreachable } from "../shared/util.js";
+import { SVG_NS, unreachable } from "../shared/util.js";
 
 class BaseSVGFactory {
   constructor() {
diff --git a/src/shared/util.js b/src/shared/util.js
index f73f6fc816b96..88fda0439ffa8 100644
--- a/src/shared/util.js
+++ b/src/shared/util.js
@@ -36,6 +36,8 @@ const LINE_FACTOR = 1.35;
 const LINE_DESCENT_FACTOR = 0.35;
 const BASELINE_FACTOR = LINE_DESCENT_FACTOR / LINE_FACTOR;
 
+const SVG_NS = "http://www.w3.org/2000/svg";
+
 /**
  * Refer to the `WorkerTransport.getRenderingIntent`-method in the API, to see
  * how these flags are being used:
@@ -1237,6 +1239,7 @@ export {
   stringToBytes,
   stringToUTF8String,
   stripPath,
+  SVG_NS,
   TextRenderingMode,
   UnknownErrorException,
   unreachable,
diff --git a/test/unit/clitests.json b/test/unit/clitests.json
index ce261c24957b2..2033ddd7a2328 100644
--- a/test/unit/clitests.json
+++ b/test/unit/clitests.json
@@ -48,6 +48,7 @@
     "pdf_viewer_spec.js",
     "postscript_spec.js",
     "primitives_spec.js",
+    "scripting_utils_spec.js",
     "stream_spec.js",
     "string_utils_spec.js",
     "struct_tree_spec.js",
diff --git a/test/unit/jasmine-boot.js b/test/unit/jasmine-boot.js
index fbbc7730ecff3..ea6404f9ab673 100644
--- a/test/unit/jasmine-boot.js
+++ b/test/unit/jasmine-boot.js
@@ -95,6 +95,7 @@ async function initializePDFJS(callback) {
       "pdfjs-test/unit/postscript_spec.js",
       "pdfjs-test/unit/primitives_spec.js",
       "pdfjs-test/unit/scripting_spec.js",
+      "pdfjs-test/unit/scripting_utils_spec.js",
       "pdfjs-test/unit/stream_spec.js",
       "pdfjs-test/unit/string_utils_spec.js",
       "pdfjs-test/unit/struct_tree_spec.js",
diff --git a/test/unit/scripting_utils_spec.js b/test/unit/scripting_utils_spec.js
new file mode 100644
index 0000000000000..efc3cc0ba6fd6
--- /dev/null
+++ b/test/unit/scripting_utils_spec.js
@@ -0,0 +1,70 @@
+/* Copyright 2026 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { ColorConverters } from "../../src/shared/scripting_utils.js";
+
+describe("scripting_utils", function () {
+  describe("ColorConverters", function () {
+    it("should check G conversion", function () {
+      const color = [0.5];
+
+      expect(ColorConverters.G_CMYK(color)).toEqual(["CMYK", 0, 0, 0, 0.5]);
+
+      expect(ColorConverters.G_RGB(color)).toEqual(["RGB", 0.5, 0.5, 0.5]);
+
+      expect(ColorConverters.G_rgb(color)).toEqual([127.5, 127.5, 127.5]);
+
+      expect(ColorConverters.G_HTML(color)).toEqual("#7f7f7f");
+    });
+
+    it("should check RGB conversion", function () {
+      const color = [0.4, 0.5, 0.6];
+
+      expect(ColorConverters.RGB_CMYK(color)).toEqual([
+        "CMYK",
+        0.6,
+        0.5,
+        0.4,
+        0.4,
+      ]);
+
+      expect(ColorConverters.RGB_G(color)).toEqual(["G", 0.481]);
+
+      expect(ColorConverters.RGB_rgb(color)).toEqual([102, 127.5, 153]);
+
+      expect(ColorConverters.RGB_HTML(color)).toEqual("#667f99");
+    });
+
+    it("should check CMYK conversion", function () {
+      const color = [0.4, 0.5, 0.6, 0];
+
+      expect(ColorConverters.CMYK_RGB(color)).toEqual(["RGB", 0.6, 0.4, 0.5]);
+
+      expect(ColorConverters.CMYK_G(color)).toEqual(["G", 0.471]);
+
+      expect(ColorConverters.CMYK_rgb(color)).toEqual([153, 102, 127.5]);
+
+      expect(ColorConverters.CMYK_HTML(color)).toEqual("#99667f");
+    });
+
+    it("should check T conversion", function () {
+      const color = [0.4, 0.5, 0.6];
+
+      expect(ColorConverters.T_rgb(color)).toEqual([null]);
+
+      expect(ColorConverters.T_HTML(color)).toEqual("#00000000");
+    });
+  });
+});