diff --git a/.eslintrc.cjs b/.eslintrc.cjs
index 3b8e2752..4870d00d 100644
--- a/.eslintrc.cjs
+++ b/.eslintrc.cjs
@@ -23,6 +23,7 @@ module.exports = {
       }
     }
   ],
+  ignorePatterns: ['./tests/visual/_compare_images.js'],
   rules: {
     'no-unused-vars': 0,
     'import/no-cycle': 2,
diff --git a/package-lock.json b/package-lock.json
index 63ce1fdb..13381e86 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -38,8 +38,11 @@
         "jest": "^29.7.0",
         "lint-staged": "^15.2.7",
         "nodemon": "^3.1.4",
+        "pixelmatch": "^6.0.0",
+        "pngjs": "^7.0.0",
         "prettier": "^3.3.2",
-        "rollup": "^4.18.0"
+        "rollup": "^4.18.0",
+        "sharp": "^0.33.4"
       },
       "engines": {
         "node": ">=18.12.0"
@@ -659,6 +662,17 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@emnapi/runtime": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@emnapi/runtime/-/runtime-1.2.0.tgz",
+      "integrity": "sha512-bV21/9LQmcQeCPEg3BDFtvwL6cwiTMksYNWQQ4KOxCZikEGalWtenoZ0wCiukJINlGCIi2KXx01g4FoH/LxpzQ==",
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "tslib": "^2.4.0"
+      }
+    },
     "node_modules/@eslint-community/eslint-utils": {
       "version": "4.4.0",
       "resolved": "https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.4.0.tgz",
@@ -757,6 +771,475 @@
       "dev": true,
       "license": "BSD-3-Clause"
     },
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+      "resolved": "https://registry.npmjs.org/@img/sharp-darwin-arm64/-/sharp-darwin-arm64-0.33.4.tgz",
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+        "arm64"
+      ],
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+      "license": "Apache-2.0",
+      "optional": true,
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+      ],
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+        "node": "^18.17.0 || ^20.3.0 || >=21.0.0",
+        "npm": ">=9.6.5",
+        "pnpm": ">=7.1.0",
+        "yarn": ">=3.2.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/libvips"
+      },
+      "optionalDependencies": {
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+      }
+    },
+    "node_modules/@img/sharp-darwin-x64": {
+      "version": "0.33.4",
+      "resolved": "https://registry.npmjs.org/@img/sharp-darwin-x64/-/sharp-darwin-x64-0.33.4.tgz",
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+        "x64"
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+      "license": "Apache-2.0",
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+      }
+    },
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+        "url": "https://opencollective.com/libvips"
+      }
+    },
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+      }
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+      "resolved": "https://registry.npmjs.org/@img/sharp-win32-x64/-/sharp-win32-x64-0.33.4.tgz",
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+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "Apache-2.0 AND LGPL-3.0-or-later",
+      "optional": true,
+      "os": [
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     "node_modules/@istanbuljs/load-nyc-config": {
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       "resolved": "https://registry.npmjs.org/@istanbuljs/load-nyc-config/-/load-nyc-config-1.1.0.tgz",
@@ -2742,6 +3225,20 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/color": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/color/-/color-4.2.3.tgz",
+      "integrity": "sha512-1rXeuUUiGGrykh+CeBdu5Ie7OJwinCgQY0bc7GCRxy5xVHy+moaqkpL/jqQq0MtQOeYcrqEz4abc5f0KtU7W4A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "color-convert": "^2.0.1",
+        "color-string": "^1.9.0"
+      },
+      "engines": {
+        "node": ">=12.5.0"
+      }
+    },
     "node_modules/color-convert": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
@@ -2760,6 +3257,17 @@
       "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
       "license": "MIT"
     },
+    "node_modules/color-string": {
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/color-string/-/color-string-1.9.1.tgz",
+      "integrity": "sha512-shrVawQFojnZv6xM40anx4CkoDP+fZsw/ZerEMsW/pyzsRbElpsL/DBVW7q3ExxwusdNXI3lXpuhEZkzs8p5Eg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "color-name": "^1.0.0",
+        "simple-swizzle": "^0.2.2"
+      }
+    },
     "node_modules/colorette": {
       "version": "2.0.20",
       "resolved": "https://registry.npmjs.org/colorette/-/colorette-2.0.20.tgz",
@@ -3171,6 +3679,16 @@
         "npm": "1.2.8000 || >= 1.4.16"
       }
     },
+    "node_modules/detect-libc": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-2.0.3.tgz",
+      "integrity": "sha512-bwy0MGW55bG41VqxxypOsdSdGqLwXPI/focwgTYCFMbdUiBAxLg9CFzG08sz2aqzknwiX7Hkl0bQENjg8iLByw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/detect-newline": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/detect-newline/-/detect-newline-3.1.0.tgz",
@@ -7037,6 +7555,19 @@
         "node": ">= 6"
       }
     },
+    "node_modules/pixelmatch": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/pixelmatch/-/pixelmatch-6.0.0.tgz",
+      "integrity": "sha512-FYpL4XiIWakTnIqLqvt3uN4L9B3TsuHIvhLILzTiJZMJUsGvmKNeL4H3b6I99LRyerK9W4IuOXw+N28AtRgK2g==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "pngjs": "^7.0.0"
+      },
+      "bin": {
+        "pixelmatch": "bin/pixelmatch"
+      }
+    },
     "node_modules/pkg-dir": {
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/pkg-dir/-/pkg-dir-4.2.0.tgz",
@@ -7106,6 +7637,16 @@
         "node": ">=8"
       }
     },
+    "node_modules/pngjs": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-7.0.0.tgz",
+      "integrity": "sha512-LKWqWJRhstyYo9pGvgor/ivk2w94eSjE3RGVuzLGlr3NmD8bf7RcYGze1mNdEHRP6TRP6rMuDHk5t44hnTRyow==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.19.0"
+      }
+    },
     "node_modules/possible-typed-array-names": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/possible-typed-array-names/-/possible-typed-array-names-1.0.0.tgz",
@@ -7878,6 +8419,60 @@
       "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw==",
       "license": "ISC"
     },
+    "node_modules/sharp": {
+      "version": "0.33.4",
+      "resolved": "https://registry.npmjs.org/sharp/-/sharp-0.33.4.tgz",
+      "integrity": "sha512-7i/dt5kGl7qR4gwPRD2biwD2/SvBn3O04J77XKFgL2OnZtQw+AG9wnuS/csmu80nPRHLYE9E41fyEiG8nhH6/Q==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "color": "^4.2.3",
+        "detect-libc": "^2.0.3",
+        "semver": "^7.6.0"
+      },
+      "engines": {
+        "libvips": ">=8.15.2",
+        "node": "^18.17.0 || ^20.3.0 || >=21.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/libvips"
+      },
+      "optionalDependencies": {
+        "@img/sharp-darwin-arm64": "0.33.4",
+        "@img/sharp-darwin-x64": "0.33.4",
+        "@img/sharp-libvips-darwin-arm64": "1.0.2",
+        "@img/sharp-libvips-darwin-x64": "1.0.2",
+        "@img/sharp-libvips-linux-arm": "1.0.2",
+        "@img/sharp-libvips-linux-arm64": "1.0.2",
+        "@img/sharp-libvips-linux-s390x": "1.0.2",
+        "@img/sharp-libvips-linux-x64": "1.0.2",
+        "@img/sharp-libvips-linuxmusl-arm64": "1.0.2",
+        "@img/sharp-libvips-linuxmusl-x64": "1.0.2",
+        "@img/sharp-linux-arm": "0.33.4",
+        "@img/sharp-linux-arm64": "0.33.4",
+        "@img/sharp-linux-s390x": "0.33.4",
+        "@img/sharp-linux-x64": "0.33.4",
+        "@img/sharp-linuxmusl-arm64": "0.33.4",
+        "@img/sharp-linuxmusl-x64": "0.33.4",
+        "@img/sharp-wasm32": "0.33.4",
+        "@img/sharp-win32-ia32": "0.33.4",
+        "@img/sharp-win32-x64": "0.33.4"
+      }
+    },
+    "node_modules/sharp/node_modules/semver": {
+      "version": "7.6.3",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.3.tgz",
+      "integrity": "sha512-oVekP1cKtI+CTDvHWYFUcMtsK/00wmAEfyqKfNdARm8u1wNVhSgaX7A8d4UuIlUI5e84iEwOhs7ZPYRmzU9U6A==",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/shebang-command": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",
@@ -7926,6 +8521,23 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/simple-swizzle": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.2.tgz",
+      "integrity": "sha512-JA//kQgZtbuY83m+xT+tXJkmJncGMTFT+C+g2h2R9uxkYIrE2yy9sgmcLhCnw57/WSD+Eh3J97FPEDFnbXnDUg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "is-arrayish": "^0.3.1"
+      }
+    },
+    "node_modules/simple-swizzle/node_modules/is-arrayish": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/is-arrayish/-/is-arrayish-0.3.2.tgz",
+      "integrity": "sha512-eVRqCvVlZbuw3GrM63ovNSNAeA1K16kaR/LRY/92w0zxQ5/1YzwblUX652i4Xs9RwAGjW9d9y6X88t8OaAJfWQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/simple-update-notifier": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/simple-update-notifier/-/simple-update-notifier-2.0.0.tgz",
diff --git a/package.json b/package.json
index fffe9b8b..2892ffc5 100644
--- a/package.json
+++ b/package.json
@@ -48,8 +48,11 @@
     "jest": "^29.7.0",
     "lint-staged": "^15.2.7",
     "nodemon": "^3.1.4",
+    "pixelmatch": "^6.0.0",
+    "pngjs": "^7.0.0",
     "prettier": "^3.3.2",
-    "rollup": "^4.18.0"
+    "rollup": "^4.18.0",
+    "sharp": "^0.33.4"
   },
   "dependencies": {
     "colors": "1.4.0",
diff --git a/tests/visual/_compare_images.js b/tests/visual/_compare_images.js
new file mode 100644
index 00000000..a551f460
--- /dev/null
+++ b/tests/visual/_compare_images.js
@@ -0,0 +1,55 @@
+/**
+ * @overview This script is ran by GitHub Actions to compare the images
+ * generated by the visual tests.
+ *
+ * It uses external libraries which are installed in the visual_tests.yml
+ *
+ * A command to run this test: `node tests/visual/_compare_images.js`
+ */
+
+import fs from 'fs';
+import sharp from 'sharp';
+import pixelmatch from 'pixelmatch';
+import { PNG } from 'pngjs';
+
+export async function compareImages(image1Path, image2Path, diffPath) {
+  const image1 = await sharp(image1Path).png().toBuffer();
+  const image2 = await sharp(image2Path).png().toBuffer();
+
+  const { width: width1, height: height1 } = await sharp(image1Path).metadata();
+  const { width: width2, height: height2 } = await sharp(image2Path).metadata();
+
+  if (width1 !== width2 || height1 !== height2) {
+    throw new Error('Images have different dimensions');
+  }
+
+  const png1 = PNG.sync.read(image1);
+  const png2 = PNG.sync.read(image2);
+
+  const { width, height } = png1;
+  const diff = new PNG({ width, height });
+
+  const numDiffPixels = pixelmatch(
+    png1.data,
+    png2.data,
+    diff.data,
+    width,
+    height,
+    {
+      threshold: 0.1
+    }
+  );
+
+  fs.writeFileSync(diffPath, PNG.sync.write(diff));
+
+  return numDiffPixels;
+}
+
+const image1Path = 'tests/visual/test_example/red_circle.png';
+const image2Path = 'tests/visual/test_example/red_circle_edited.png';
+const diffPath = 'tests/visual/test_example/generated_diff.png';
+
+console.log(
+  'Result of compareImages: ',
+  compareImages(image1Path, image2Path, diffPath)
+);
diff --git a/tests/visual/_visual_test_node_runner.js b/tests/visual/_visual_test_node_runner.js
new file mode 100644
index 00000000..fbd99a15
--- /dev/null
+++ b/tests/visual/_visual_test_node_runner.js
@@ -0,0 +1,55 @@
+import fs from 'fs';
+import exporter from '../../lib/index.js';
+
+console.log('Running node tests...');
+
+const getDirectories = async () =>
+  (await fs.promises.readdir('./tests/visual', { withFileTypes: true }))
+    .filter((file) => file.isDirectory())
+    .map((file) => file.name);
+
+const getFiles = async (directory) =>
+  (await fs.promises.readdir(directory, { withFileTypes: true }))
+    .filter((file) => file.isFile())
+    .map((file) => file.name);
+
+const readJsonFile = async (filePath) =>
+  JSON.parse(await fs.promises.readFile(filePath, 'utf8'));
+
+const initExporter = async () => {
+  await exporter.initExport(exporter.setOptions());
+  exporter.setLogLevel(4);
+};
+
+const runSingleExport = async (options) => {
+  return new Promise((resolve) =>
+    exporter.startExport(options, async (error, info) => {
+      console.log('callback()');
+      if (error) throw error;
+
+      await fs.promises.writeFile(
+        info.options.export.outfile,
+        info.options?.export?.type !== 'svg'
+          ? Buffer.from(info.result, 'base64')
+          : info.result
+      );
+
+      resolve();
+    })
+  );
+};
+
+(async () => {
+  console.log(await getDirectories());
+  console.log(await getFiles('./tests/visual/allow_code_execution'));
+
+  const options = await readJsonFile(
+    './tests/visual/allow_code_execution/config.json'
+  );
+
+  options.export.outfile = './tests/visual/allow_code_execution/generated.png';
+
+  await initExporter();
+  await runSingleExport(options);
+  await exporter.killPool();
+})();
diff --git a/tests/visual/allow_code_execution/config.json b/tests/visual/allow_code_execution/config.json
new file mode 100644
index 00000000..9357eff4
--- /dev/null
+++ b/tests/visual/allow_code_execution/config.json
@@ -0,0 +1,48 @@
+{
+  "export": {
+    "options": {
+      "chart": {
+        "type": "column"
+      },
+      "title": {
+        "text": "Allow code execution"
+      },
+      "yAxis": [
+        {
+          "title": {
+            "text": "Primary axis"
+          }
+        },
+        {
+          "opposite": true,
+          "title": {
+            "text": "Secondary axis"
+          }
+        }
+      ],
+      "plotOptions": {
+        "column": {
+          "borderRadius": 5
+        }
+      },
+      "series": [
+        {
+          "data": [1, 3, 2, 4]
+        },
+        {
+          "data": [324, 124, 547, 221],
+          "yAxis": 1
+        }
+      ]
+    }
+  },
+  "customLogic": {
+    "allowCodeExecution": true,
+    "callback": "function callback(chart){chart.renderer.label('This label is added in the stringified callback.<br>Highcharts version '+Highcharts.version,75,75).attr({id:'renderer-callback-label',fill:'#90ed7d',padding:10,r:10,zIndex:10}).css({color:'black',width:'100px'}).add();}",
+    "customCode": "Highcharts.setOptions({chart:{events:{render:function (){this.renderer.image('https://www.highcharts.com/samples/graphics/sun.png',75,50,20,20).add();}}}});",
+    "resources": {
+      "js": "Highcharts.charts[0].update({xAxis:{title:{text:'Title from the resources object, js section'}}});",
+      "css": ".highcharts-yaxis .highcharts-axis-line{stroke-width:2px;stroke:#FF0000}"
+    }
+  }
+}
diff --git a/tests/visual/test_example/node_ b/tests/visual/test_example/node_
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/visual/test_example/test_example_options.json b/tests/visual/test_example/test_example_options.json
new file mode 100644
index 00000000..9350e20a
--- /dev/null
+++ b/tests/visual/test_example/test_example_options.json
@@ -0,0 +1,39 @@
+{
+  "export": {
+    "options": {
+      "chart": {
+        "type": "column"
+      },
+      "title": {
+        "text": "Allow code execution"
+      },
+      "yAxis": [
+        {
+          "title": {
+            "text": "Primary axis"
+          }
+        },
+        {
+          "opposite": true,
+          "title": {
+            "text": "Secondary axis"
+          }
+        }
+      ],
+      "plotOptions": {
+        "column": {
+          "borderRadius": 5
+        }
+      },
+      "series": [
+        {
+          "data": [1, 3, 2, 4]
+        },
+        {
+          "data": [324, 124, 547, 221],
+          "yAxis": 1
+        }
+      ]
+    }
+  }
+}