diff --git a/features/preferences/impl/build.gradle.kts b/features/preferences/impl/build.gradle.kts
index 80ac4b3ba3..12554eb6fa 100644
--- a/features/preferences/impl/build.gradle.kts
+++ b/features/preferences/impl/build.gradle.kts
@@ -92,6 +92,7 @@ dependencies {
     implementation(libs.color.picker)
     implementation(libs.androidx.browser)
     implementation(libs.androidx.datastore.preferences)
+    implementation(libs.serialization.json)
     api(projects.features.preferences.api)
     implementation(libs.showkase)
 
diff --git a/features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenter.kt b/features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenter.kt
index 9b523d1c34..74bf595ce4 100644
--- a/features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenter.kt
+++ b/features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenter.kt
@@ -32,6 +32,7 @@ import io.element.android.libraries.architecture.AsyncData
 import io.element.android.libraries.architecture.Presenter
 import io.element.android.libraries.architecture.runCatchingUpdatingState
 import io.element.android.libraries.core.data.ByteUnit
+import io.element.android.libraries.core.extensions.runCatchingExceptions
 import io.element.android.libraries.core.meta.BuildMeta
 import io.element.android.libraries.matrix.api.analytics.GetDatabaseSizesUseCase
 import io.element.android.libraries.matrix.api.core.DeviceId
@@ -41,6 +42,9 @@ import kotlinx.collections.immutable.ImmutableMap
 import kotlinx.collections.immutable.toImmutableMap
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.launch
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonElement
 
 @AssistedInject
 class DeveloperSettingsPresenter(
@@ -190,7 +194,7 @@ class DeveloperSettingsPresenter(
                 pushRulesAction.value = AsyncAction.Uninitialized
                 navigator.openPushRules(
                     filename = pushRulesFilename(),
-                    content = content.orEmpty(),
+                    content = content.orEmpty().prettyPrintJson(),
                 )
             }
             .onFailure {
@@ -204,3 +208,18 @@ class DeveloperSettingsPresenter(
      */
     private fun pushRulesFilename() = "push_rules${sessionId.value.replace(':', '_')}.json"
 }
+
+@OptIn(ExperimentalSerializationApi::class)
+private val prettyPrintJson = Json {
+    prettyPrint = true
+    // Keep the indentation small, for a better rendering on mobile.
+    prettyPrintIndent = "  "
+}
+
+/**
+ * Pretty print this json content, so that it is readable when rendered.
+ * Return the content as is if it is not valid json.
+ */
+private fun String.prettyPrintJson(): String = runCatchingExceptions {
+    prettyPrintJson.encodeToString(JsonElement.serializer(), prettyPrintJson.parseToJsonElement(this))
+}.getOrDefault(this)
diff --git a/features/preferences/impl/src/test/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenterTest.kt b/features/preferences/impl/src/test/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenterTest.kt
index 66f96e5eb3..b76939f72c 100644
--- a/features/preferences/impl/src/test/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenterTest.kt
+++ b/features/preferences/impl/src/test/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenterTest.kt
@@ -44,7 +44,17 @@ import kotlinx.coroutines.test.runTest
 import org.junit.Rule
 import org.junit.Test
 
-private const val A_PUSH_RULES_CONTENT = "{\"global\":{}}"
+private const val A_PUSH_RULES_CONTENT = """{"global":{"override":[{"rule_id":".m.rule.master","enabled":false}]}}"""
+private const val A_PUSH_RULES_CONTENT_PRETTY_PRINTED = """{
+  "global": {
+    "override": [
+      {
+        "rule_id": ".m.rule.master",
+        "enabled": false
+      }
+    ]
+  }
+}"""
 private val AN_EXCEPTION = Exception("A failure")
 
 class DeveloperSettingsPresenterTest {
@@ -195,7 +205,26 @@ class DeveloperSettingsPresenterTest {
             }
             openPushRulesLambda.assertions().isCalledOnce().with(
                 value("push_rules@alice_server.org.json"),
-                value(A_PUSH_RULES_CONTENT),
+                value(A_PUSH_RULES_CONTENT_PRETTY_PRINTED),
+            )
+        }
+    }
+
+    @Test
+    fun `present - OpenPushRules event keeps the content as is when it is not valid json`() = runTest {
+        val openPushRulesLambda = lambdaRecorder<String, String, Unit> { _, _ -> }
+        val presenter = createDeveloperSettingsPresenter(
+            navigator = DeveloperSettingsNavigator(openPushRulesLambda),
+            notificationSettingsService = FakeNotificationSettingsService(
+                getRawPushRulesResult = { Result.success("not json") },
+            ),
+        )
+        presenter.test {
+            awaitItem().eventSink(DeveloperSettingsEvent.OpenPushRules)
+            skipItems(2)
+            openPushRulesLambda.assertions().isCalledOnce().with(
+                value("push_rules@alice_server.org.json"),
+                value("not json"),
             )
         }
     }