diff --git a/core/testing/src/main/java/io/github/droidkaigi/confsched/testing/robot/AboutScreenRobot.kt b/core/testing/src/main/java/io/github/droidkaigi/confsched/testing/robot/AboutScreenRobot.kt
index 8e1613a4b..2690f033b 100644
--- a/core/testing/src/main/java/io/github/droidkaigi/confsched/testing/robot/AboutScreenRobot.kt
+++ b/core/testing/src/main/java/io/github/droidkaigi/confsched/testing/robot/AboutScreenRobot.kt
@@ -3,7 +3,10 @@ package io.github.droidkaigi.confsched.testing.robot
 import androidx.compose.ui.test.assertIsDisplayed
 import androidx.compose.ui.test.hasTestTag
 import io.github.droidkaigi.confsched.about.AboutScreen
-import io.github.droidkaigi.confsched.about.AboutTestTag
+import io.github.droidkaigi.confsched.about.section.AboutCreditsSectionTestTag
+import io.github.droidkaigi.confsched.about.section.AboutDetailSectionTestTag
+import io.github.droidkaigi.confsched.about.section.AboutFooterLinksSectionTestTag
+import io.github.droidkaigi.confsched.about.section.AboutOthersSectionTestTag
 import io.github.droidkaigi.confsched.designsystem.theme.KaigiTheme
 import io.github.droidkaigi.confsched.testing.DefaultScreenRobot
 import io.github.droidkaigi.confsched.testing.ScreenRobot
@@ -25,25 +28,25 @@ class AboutScreenRobot @Inject constructor(
 
     fun checkDetailSectionDisplayed() {
         composeTestRule
-            .onNode(hasTestTag(AboutTestTag.DetailSection.Section))
+            .onNode(hasTestTag(AboutDetailSectionTestTag.Section))
             .assertIsDisplayed()
     }
 
-    fun checkCreditsSectionDisplayed() {
+    fun checkCreditsSectionTitleDisplayed() {
         composeTestRule
-            .onNode(hasTestTag(AboutTestTag.CreditsSection.Section))
+            .onNode(hasTestTag(AboutCreditsSectionTestTag.Title))
             .assertIsDisplayed()
     }
 
-    fun checkOthersSectionDisplayed() {
+    fun checkOthersSectionTitleDisplayed() {
         composeTestRule
-            .onNode(hasTestTag(AboutTestTag.OthersSection.Section))
+            .onNode(hasTestTag(AboutOthersSectionTestTag.Title))
             .assertIsDisplayed()
     }
 
     fun checkFooterLinksSectionDisplayed() {
         composeTestRule
-            .onNode(hasTestTag(AboutTestTag.FooterLinksSection.Section))
+            .onNode(hasTestTag(AboutFooterLinksSectionTestTag.Section))
             .assertIsDisplayed()
     }
 }
diff --git a/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/AboutScreen.kt b/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/AboutScreen.kt
index f7316308e..7ccecfbd4 100644
--- a/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/AboutScreen.kt
+++ b/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/AboutScreen.kt
@@ -29,29 +29,8 @@ import io.github.droidkaigi.confsched.model.AboutItem.YouTube
 
 const val aboutScreenRoute = "about"
 
-object AboutTestTag {
-    private const val suffix = "TestTag"
-    private const val prefix = "ProfileCard"
-
-    object DetailSection {
-        private const val detailSectionPrefix = "${prefix}_DetailSection"
-        const val Section = "${detailSectionPrefix}_$suffix"
-    }
-
-    object CreditsSection {
-        private const val creditsSectionPrefix = "${prefix}_CreditsSection"
-        const val Section = "${creditsSectionPrefix}_$suffix"
-    }
-
-    object OthersSection {
-        private const val othersSectionPrefix = "${prefix}_OthersSection"
-        const val Section = "${othersSectionPrefix}_$suffix"
-    }
-
-    object FooterLinksSection {
-        private const val footerLinksSectionPrefix = "${prefix}_FooterLinksSection"
-        const val Section = "${footerLinksSectionPrefix}_$suffix"
-    }
+object AboutScreenTestTag {
+    const val Screen = "AboutScreen"
 }
 
 fun NavGraphBuilder.aboutScreen(
@@ -88,7 +67,7 @@ fun AboutScreen(
     val layoutDirection = LocalLayoutDirection.current
 
     Scaffold(
-        modifier = modifier,
+        modifier = modifier.testTag(AboutScreenTestTag.Screen),
         snackbarHost = { SnackbarHost(hostState = snackbarHostState) },
         contentWindowInsets = WindowInsets(
             left = contentPadding.calculateLeftPadding(layoutDirection),
@@ -114,7 +93,6 @@ fun AboutScreen(
                 onStaffItemClick = {
                     onAboutItemClick(AboutItem.Staff)
                 },
-                modifier = Modifier.testTag(AboutTestTag.CreditsSection.Section),
             )
             aboutOthers(
                 onCodeOfConductItemClick = {
@@ -126,7 +104,6 @@ fun AboutScreen(
                 onPrivacyPolicyItemClick = {
                     onAboutItemClick(AboutItem.PrivacyPolicy)
                 },
-                modifier = Modifier.testTag(AboutTestTag.OthersSection.Section),
             )
             item {
                 AboutFooterLinks(
@@ -141,7 +118,6 @@ fun AboutScreen(
                     onMediumClick = {
                         onAboutItemClick(Medium)
                     },
-                    modifier = Modifier.testTag(AboutTestTag.FooterLinksSection.Section),
                 )
             }
         }
diff --git a/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutCredits.kt b/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutCredits.kt
index cb174cebb..4ed4267a0 100644
--- a/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutCredits.kt
+++ b/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutCredits.kt
@@ -9,18 +9,25 @@ import androidx.compose.material.icons.outlined.SentimentVerySatisfied
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.unit.dp
 import conference_app_2024.feature.about.generated.resources.contributor
 import conference_app_2024.feature.about.generated.resources.credits_title
-import conference_app_2024.feature.about.generated.resources.sponsor
 import conference_app_2024.feature.about.generated.resources.staff
 import io.github.droidkaigi.confsched.about.AboutRes
 import io.github.droidkaigi.confsched.about.component.AboutContentColumn
+import io.github.droidkaigi.confsched.about.section.AboutCreditsSectionTestTag.ContributorsItem
+import io.github.droidkaigi.confsched.about.section.AboutCreditsSectionTestTag.SponsorsItem
+import io.github.droidkaigi.confsched.about.section.AboutCreditsSectionTestTag.StaffItem
 import org.jetbrains.compose.resources.stringResource
 
-const val AboutCreditsStaffItemTestTag = "AboutCreditsStaffItem"
-const val AboutCreditsContributorsItemTestTag = "AboutCreditsContributorsItem"
-const val AboutCreditsSponsorsItemTestTag = "AboutCreditsSponsorsItem"
+@Suppress("ConstPropertyName")
+object AboutCreditsSectionTestTag {
+    const val Title = "AboutCreditsTitle"
+    const val StaffItem = "AboutCreditsStaffItem"
+    const val ContributorsItem = "AboutCreditsContributorsItem"
+    const val SponsorsItem = "AboutCreditsSponsorsItem"
+}
 
 fun LazyListScope.aboutCredits(
     modifier: Modifier = Modifier,
@@ -33,6 +40,7 @@ fun LazyListScope.aboutCredits(
             text = stringResource(AboutRes.string.credits_title),
             style = MaterialTheme.typography.titleMedium,
             modifier = modifier
+                .testTag(AboutCreditsSectionTestTag.Title)
                 .padding(
                     start = 16.dp,
                     top = 32.dp,
@@ -44,7 +52,7 @@ fun LazyListScope.aboutCredits(
         AboutContentColumn(
             leadingIcon = Outlined.Diversity1,
             label = stringResource(AboutRes.string.contributor),
-            testTag = AboutCreditsContributorsItemTestTag,
+            testTag = ContributorsItem,
             onClickAction = onContributorsItemClick,
             modifier = modifier
                 .padding(
@@ -56,7 +64,7 @@ fun LazyListScope.aboutCredits(
         AboutContentColumn(
             leadingIcon = Outlined.SentimentVerySatisfied,
             label = stringResource(AboutRes.string.staff),
-            testTag = AboutCreditsStaffItemTestTag,
+            testTag = StaffItem,
             onClickAction = onStaffItemClick,
             modifier = modifier
                 .padding(
@@ -67,8 +75,8 @@ fun LazyListScope.aboutCredits(
     item {
         AboutContentColumn(
             leadingIcon = Outlined.Apartment,
-            label = stringResource(AboutRes.string.sponsor),
-            testTag = AboutCreditsSponsorsItemTestTag,
+            label = stringResource(AboutRes.string.staff),
+            testTag = SponsorsItem,
             onClickAction = onSponsorsItemClick,
             modifier = modifier
                 .padding(
diff --git a/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutDroidKaigiDetail.kt b/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutDroidKaigiDetail.kt
index 21f9292c2..a38d20821 100644
--- a/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutDroidKaigiDetail.kt
+++ b/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutDroidKaigiDetail.kt
@@ -17,19 +17,23 @@ import conference_app_2024.feature.about.generated.resources.Res
 import conference_app_2024.feature.about.generated.resources.about_header
 import conference_app_2024.feature.about.generated.resources.description
 import io.github.droidkaigi.confsched.about.AboutRes
-import io.github.droidkaigi.confsched.about.AboutTestTag
 import io.github.droidkaigi.confsched.about.component.AboutDroidKaigiDetailSummaryCard
 import io.github.droidkaigi.confsched.designsystem.theme.KaigiTheme
 import org.jetbrains.compose.resources.painterResource
 import org.jetbrains.compose.resources.stringResource
 import org.jetbrains.compose.ui.tooling.preview.Preview
 
+@Suppress("ConstPropertyName")
+object AboutDetailSectionTestTag {
+    const val Section = "DetailSection"
+}
+
 @Composable
 fun AboutDroidKaigiDetail(
     modifier: Modifier = Modifier,
 ) {
     Column(
-        modifier = modifier.testTag(AboutTestTag.DetailSection.Section),
+        modifier = modifier.testTag(AboutDetailSectionTestTag.Section),
     ) {
         Image(
             painter = painterResource(Res.drawable.about_header),
diff --git a/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutFooterLinks.kt b/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutFooterLinks.kt
index 23604b863..ce3d94686 100644
--- a/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutFooterLinks.kt
+++ b/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutFooterLinks.kt
@@ -13,18 +13,27 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.unit.dp
 import conference_app_2024.feature.about.generated.resources.app_version
 import conference_app_2024.feature.about.generated.resources.content_description_youtube
 import io.github.droidkaigi.confsched.about.AboutRes
 import io.github.droidkaigi.confsched.about.component.AboutFooterLinksIcon
+import io.github.droidkaigi.confsched.about.section.AboutFooterLinksSectionTestTag.LinksMediumItemTestTag
+import io.github.droidkaigi.confsched.about.section.AboutFooterLinksSectionTestTag.LinksXItemTestTag
+import io.github.droidkaigi.confsched.about.section.AboutFooterLinksSectionTestTag.LinksYouTubeItemTestTag
+import io.github.droidkaigi.confsched.about.section.AboutFooterLinksSectionTestTag.Section
 import io.github.droidkaigi.confsched.designsystem.theme.KaigiTheme
 import org.jetbrains.compose.resources.stringResource
 import org.jetbrains.compose.ui.tooling.preview.Preview
 
-const val AboutFooterLinksYouTubeItemTestTag = "AboutFooterLinksYouTubeItem"
-const val AboutFooterLinksXItemTestTag = "AboutFooterLinksXItem"
-const val AboutFooterLinksMediumItemTestTag = "AboutFooterLinksMediumItem"
+@Suppress("ConstPropertyName")
+object AboutFooterLinksSectionTestTag {
+    const val Section = "FooterLinksSection"
+    const val LinksYouTubeItemTestTag = "AboutFooterLinksYouTubeItem"
+    const val LinksXItemTestTag = "AboutFooterLinksXItem"
+    const val LinksMediumItemTestTag = "AboutFooterLinksMediumItem"
+}
 
 @Composable
 fun AboutFooterLinks(
@@ -38,22 +47,23 @@ fun AboutFooterLinks(
         verticalArrangement = Arrangement.Top,
         horizontalAlignment = Alignment.CenterHorizontally,
         modifier = modifier
+            .testTag(Section)
             .fillMaxWidth()
             .padding(top = 24.dp, bottom = 16.dp),
     ) {
         Row(horizontalArrangement = Arrangement.spacedBy(12.dp)) {
             AboutFooterLinksIcon(
-                testTag = AboutFooterLinksYouTubeItemTestTag,
+                testTag = LinksYouTubeItemTestTag,
                 contentDescription = stringResource(AboutRes.string.content_description_youtube),
                 onClick = onYouTubeClick,
             )
             AboutFooterLinksIcon(
-                testTag = AboutFooterLinksXItemTestTag,
+                testTag = LinksXItemTestTag,
                 contentDescription = "X",
                 onClick = onXClick,
             )
             AboutFooterLinksIcon(
-                testTag = AboutFooterLinksMediumItemTestTag,
+                testTag = LinksMediumItemTestTag,
                 contentDescription = "Medium",
                 onClick = onMediumClick,
             )
diff --git a/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutOthers.kt b/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutOthers.kt
index 95d2554ea..a31b3c234 100644
--- a/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutOthers.kt
+++ b/feature/about/src/commonMain/kotlin/io/github/droidkaigi/confsched/about/section/AboutOthers.kt
@@ -12,6 +12,7 @@ import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.unit.dp
 import conference_app_2024.feature.about.generated.resources.code_of_conduct
 import conference_app_2024.feature.about.generated.resources.license
@@ -19,13 +20,20 @@ import conference_app_2024.feature.about.generated.resources.others_title
 import conference_app_2024.feature.about.generated.resources.privacy_policy
 import io.github.droidkaigi.confsched.about.AboutRes
 import io.github.droidkaigi.confsched.about.component.AboutContentColumn
+import io.github.droidkaigi.confsched.about.section.AboutOthersSectionTestTag.CodeOfConductItem
+import io.github.droidkaigi.confsched.about.section.AboutOthersSectionTestTag.LicenseItem
+import io.github.droidkaigi.confsched.about.section.AboutOthersSectionTestTag.PrivacyPolicyItem
 import io.github.droidkaigi.confsched.designsystem.theme.KaigiTheme
 import org.jetbrains.compose.resources.stringResource
 import org.jetbrains.compose.ui.tooling.preview.Preview
 
-const val AboutOthersCodeOfConductItemTestTag = "AboutOthersCodeOfConductItem"
-const val AboutOthersLicenseItemTestTag = "AboutOthersLicenseItem"
-const val AboutOthersPrivacyPolicyItemTestTag = "AboutOthersPrivacyPolicyItem"
+@Suppress("ConstPropertyName")
+object AboutOthersSectionTestTag {
+    const val Title = "AboutOthersTitle"
+    const val CodeOfConductItem = "AboutOthersCodeOfConductItem"
+    const val LicenseItem = "AboutOthersLicenseItem"
+    const val PrivacyPolicyItem = "AboutOthersPrivacyPolicyItem"
+}
 
 fun LazyListScope.aboutOthers(
     modifier: Modifier = Modifier,
@@ -38,6 +46,7 @@ fun LazyListScope.aboutOthers(
             text = stringResource(AboutRes.string.others_title),
             style = MaterialTheme.typography.titleMedium,
             modifier = modifier
+                .testTag(AboutOthersSectionTestTag.Title)
                 .padding(
                     start = 16.dp,
                     top = 32.dp,
@@ -49,7 +58,7 @@ fun LazyListScope.aboutOthers(
         AboutContentColumn(
             leadingIcon = Outlined.Gavel,
             label = stringResource(AboutRes.string.code_of_conduct),
-            testTag = AboutOthersCodeOfConductItemTestTag,
+            testTag = CodeOfConductItem,
             onClickAction = onCodeOfConductItemClick,
             modifier = modifier
                 .padding(
@@ -61,7 +70,7 @@ fun LazyListScope.aboutOthers(
         AboutContentColumn(
             leadingIcon = Outlined.FileCopy,
             label = stringResource(AboutRes.string.license),
-            testTag = AboutOthersLicenseItemTestTag,
+            testTag = LicenseItem,
             onClickAction = onLicenseItemClick,
             modifier = modifier
                 .padding(
@@ -73,7 +82,7 @@ fun LazyListScope.aboutOthers(
         AboutContentColumn(
             leadingIcon = Outlined.PrivacyTip,
             label = stringResource(AboutRes.string.privacy_policy),
-            testTag = AboutOthersPrivacyPolicyItemTestTag,
+            testTag = PrivacyPolicyItem,
             onClickAction = onPrivacyPolicyItemClick,
             modifier = modifier
                 .padding(