diff --git a/core/src/main/kotlin/model/CompositeSourceSetID.kt b/core/src/main/kotlin/model/CompositeSourceSetID.kt
index e14b01dfab..3295935a18 100644
--- a/core/src/main/kotlin/model/CompositeSourceSetID.kt
+++ b/core/src/main/kotlin/model/CompositeSourceSetID.kt
@@ -13,10 +13,12 @@ data class CompositeSourceSetID(
         require(children.isNotEmpty()) { "Expected at least one source set id" }
     }
 
-    val merged = DokkaSourceSetID(
-        scopeId = children.joinToString(separator = "+") { it.scopeId },
-        sourceSetName = children.joinToString(separator = "+") { it.sourceSetName }
-    )
+    val merged = children.sortedBy { it.scopeId + it.sourceSetName }.let { sortedChildren ->
+        DokkaSourceSetID(
+            scopeId = sortedChildren.joinToString(separator = "+") { it.scopeId },
+            sourceSetName = sortedChildren.joinToString(separator = "+") { it.sourceSetName }
+        )
+    }
 
     val all: Set<DokkaSourceSetID> = setOf(merged, *children.toTypedArray())
 
diff --git a/plugins/base/src/main/kotlin/renderers/pageId.kt b/plugins/base/src/main/kotlin/renderers/pageId.kt
index b80121c090..a4056025bb 100644
--- a/plugins/base/src/main/kotlin/renderers/pageId.kt
+++ b/plugins/base/src/main/kotlin/renderers/pageId.kt
@@ -11,8 +11,15 @@ internal val ContentPage.pageId: String
 internal val NavigationNode.pageId: String
     get() = pageId(dri, sourceSets)
 
+internal fun Set<DisplaySourceSet>.shortenToUrl() =
+    sortedBy { it.sourceSetIDs.merged.let { it.scopeId + it.sourceSetName } }.joinToString().hashCode()
+
+internal fun DRI.shortenToUrl() = toString()
+
+internal fun Set<DRI>.shortenToUrl() = sortedBy { it.toString() }.joinToString()
+
 /**
  * Page Id is required to have a sourceSet in order to distinguish between different pages that has same DRI but different sourceSet
  * like main functions that are not expect/actual
  */
-private fun pageId(dri: DRI, sourceSets: Set<DisplaySourceSet>): String = "$dri/${sourceSets.hashCode()}"
\ No newline at end of file
+private fun pageId(dri: DRI, sourceSets: Set<DisplaySourceSet>): String = "${dri.shortenToUrl()}/${sourceSets.shortenToUrl()}"
\ No newline at end of file
diff --git a/plugins/base/src/main/kotlin/resolvers/local/DokkaBaseLocationProvider.kt b/plugins/base/src/main/kotlin/resolvers/local/DokkaBaseLocationProvider.kt
index fa13304549..3f4b065f35 100644
--- a/plugins/base/src/main/kotlin/resolvers/local/DokkaBaseLocationProvider.kt
+++ b/plugins/base/src/main/kotlin/resolvers/local/DokkaBaseLocationProvider.kt
@@ -1,5 +1,6 @@
 package org.jetbrains.dokka.base.resolvers.local
 
+import org.jetbrains.dokka.base.renderers.shortenToUrl
 import org.jetbrains.dokka.model.DisplaySourceSet
 import org.jetbrains.dokka.pages.DCI
 import org.jetbrains.dokka.pages.RootPageNode
@@ -17,6 +18,6 @@ abstract class DokkaBaseLocationProvider(
      * 2040 characters limit
      */
     open fun anchorForDCI(dci: DCI, sourceSets: Set<DisplaySourceSet>): String =
-        (dci.dri.toString() + "/" + dci.kind + "/" + sourceSets.hashCode()).urlEncoded()
+        (dci.dri.shortenToUrl() + "/" + dci.kind + "/" + sourceSets.shortenToUrl()).urlEncoded()
 
 }