diff --git a/packages/survey-core/src/survey.ts b/packages/survey-core/src/survey.ts
index 369bb13350..ec7f94336b 100644
--- a/packages/survey-core/src/survey.ts
+++ b/packages/survey-core/src/survey.ts
@@ -2246,10 +2246,9 @@ export class SurveyModel extends SurveyElementCore
   /**
    * A logo width in CSS-accepted values.
    *
-   * Default value: `300px`
+   * Default value: `auto` (the width is calculated automatically based on the [`logoHeight`](https://surveyjs.io/form-library/documentation/api-reference/survey-data-model#logoHeight) value to keep the original aspect ratio)
    *
    * [View Demo](https://surveyjs.io/form-library/examples/survey-logo/ (linkStyle))
-   * @see logoHeight
    * @see logo
    * @see logoPosition
    * @see logoFit
@@ -2271,10 +2270,10 @@ export class SurveyModel extends SurveyElementCore
   /**
    * A logo height in CSS-accepted values.
    *
-   * Default value: `200px`
+   * Default value: `40px`
    *
    * [View Demo](https://surveyjs.io/form-library/examples/survey-logo/ (linkStyle))
-   * @see logoHeight
+   * @see logoWidth
    * @see logo
    * @see logoPosition
    * @see logoFit
@@ -8302,8 +8301,8 @@ Serializer.addClass("survey", [
     dependsOn: "locale",
   },
   { name: "logo:file", serializationProperty: "locLogo" },
-  { name: "logoWidth", default: "300px", minValue: 0 },
-  { name: "logoHeight", default: "200px", minValue: 0 },
+  { name: "logoWidth", default: "auto", minValue: 0 },
+  { name: "logoHeight", default: "40px", minValue: 0 },
   {
     name: "logoFit",
     default: "contain",
diff --git a/packages/survey-core/tests/surveytests.ts b/packages/survey-core/tests/surveytests.ts
index 2a926e9217..ca7d5594d9 100644
--- a/packages/survey-core/tests/surveytests.ts
+++ b/packages/survey-core/tests/surveytests.ts
@@ -14953,11 +14953,11 @@ QUnit.test("getSize", function (assert) {
 });
 QUnit.test("survey logo size", function (assert) {
   var survey = new SurveyModel();
-  assert.equal(survey.logoWidth, "300px", "300px");
-  assert.equal(survey.logoHeight, "200px", "200px");
-  assert.equal(survey.renderedLogoWidth, 300);
-  assert.equal(survey.renderedLogoHeight, 200);
-  assert.equal(survey.renderedStyleLogoWidth, undefined);
+  assert.equal(survey.logoWidth, "auto", "auto");
+  assert.equal(survey.logoHeight, "40px", "40px");
+  assert.equal(survey.renderedLogoWidth, undefined);
+  assert.equal(survey.renderedLogoHeight, 40);
+  assert.equal(survey.renderedStyleLogoWidth, "auto");
   assert.equal(survey.renderedStyleLogoHeight, undefined);
   survey.logoWidth = "100%";
   survey.logoHeight = "auto";
diff --git a/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-default.png b/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-default.png
index feea68ae68..6fabe5ebb0 100644
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diff --git a/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-mobile-background.png b/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-mobile-background.png
index 442484d7f9..645f2d0b30 100644
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diff --git a/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-mobile-default.png b/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-mobile-default.png
index 91160aa7f2..9bf497296f 100644
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diff --git a/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-mobile-with-overlap.png b/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-mobile-with-overlap.png
index ef97cd7c2a..0b9e9944ef 100644
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diff --git a/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-width-by-survey.png b/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-width-by-survey.png
index fd29d6c06d..4bcc82452e 100644
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diff --git a/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-with-overlap.png b/visualRegressionTests/tests/defaultV2/etalons/survey-advanced-header-with-overlap.png
index 71dd51d7af..63d3c37549 100644
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diff --git a/visualRegressionTests/tests/defaultV2/etalons/survey-logo-right-without-title.png b/visualRegressionTests/tests/defaultV2/etalons/survey-logo-right-without-title.png
index 3435f2854c..6d6189a28c 100644
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diff --git a/visualRegressionTests/tests/defaultV2/etalons/survey-title-with-logo.png b/visualRegressionTests/tests/defaultV2/etalons/survey-title-with-logo.png
index 49eda1314c..8d9783398f 100644
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diff --git a/visualRegressionTests/tests/defaultV2/etalons/survey-toc-advanced-header-mobile-with-overlap.png b/visualRegressionTests/tests/defaultV2/etalons/survey-toc-advanced-header-mobile-with-overlap.png
index 4ecd047633..8eaeac8319 100644
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diff --git a/visualRegressionTests/tests/defaultV2/etalons/survey-toc-advanced-header-with-overlap.png b/visualRegressionTests/tests/defaultV2/etalons/survey-toc-advanced-header-with-overlap.png
index 534fb301dc..611de691cf 100644
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