diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b973f8..f8d6aeb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 - Plain NOW export now opens ZIP input with `java.util.zip.ZipFile` in streaming mode instead of Apache Commons `ZipFile`, removing the multi-minute startup delay on very large archives with huge entry counts and allowing extraction to begin almost immediately
 - Plain NOW export startup and progress diagnostics now log ZIP open time and first-output timing more explicitly, making it easier to distinguish ZIP indexing overhead from actual extraction work
 - Plain Word2Vec export now uses the same archive-order streaming ZIP path as plain NOW output, including the faster `java.util.zip.ZipFile` opener for large archives with many entries
+- Plain CoNLL-U export now also uses the archive-order streaming ZIP path when exactly one base ZIP is given, while multi-ZIP and foundry-paired CoNLL-U input stays on the ordered pipeline
 
 ## [v3.3.0] - 2026-03-26
 
diff --git a/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt b/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt
index d929e85..b039795 100644
--- a/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt
+++ b/app/src/main/kotlin/de/ids_mannheim/korapxmltools/KorapXmlTool.kt
@@ -972,16 +972,28 @@
             outputFormat == OutputFormat.WORD2VEC ||
             outputFormat == OutputFormat.NOW)
 
+    private fun hasSingleBaseZipInput(): Boolean {
+        val inputs = zipFileNames ?: return false
+        if (inputs.size != 1) return false
+        val name = File(inputs[0]).name
+        return name.matches(Regex(".*\\.zip$")) && !name.matches(Regex(".*\\.[^/.]+\\.zip$"))
+    }
+
     internal fun canUseArchiveOrderTextStreaming(): Boolean =
-        (outputFormat == OutputFormat.NOW || outputFormat == OutputFormat.WORD2VEC) &&
-            annotationWorkerPool == null &&
+        annotationWorkerPool == null &&
             taggerName == null &&
-            parserName == null
+            parserName == null &&
+            when (outputFormat) {
+                OutputFormat.NOW, OutputFormat.WORD2VEC -> true
+                OutputFormat.CONLLU -> hasSingleBaseZipInput()
+                else -> false
+            }
 
     private fun textStreamingModeLabel(): String =
         when (outputFormat) {
             OutputFormat.NOW -> "NOW"
             OutputFormat.WORD2VEC -> "Word2Vec"
+            OutputFormat.CONLLU -> "CoNLL-U"
             else -> outputFormat.name
         }
 
diff --git a/app/src/test/kotlin/de/ids_mannheim/korapxmltools/GeneralFeaturesTest.kt b/app/src/test/kotlin/de/ids_mannheim/korapxmltools/GeneralFeaturesTest.kt
index 61c4ebe..5a7bf73 100644
--- a/app/src/test/kotlin/de/ids_mannheim/korapxmltools/GeneralFeaturesTest.kt
+++ b/app/src/test/kotlin/de/ids_mannheim/korapxmltools/GeneralFeaturesTest.kt
@@ -158,9 +158,30 @@
     }
 
     @Test
-    fun conlluOutputKeepsOrderedPipeline() {
+    fun singleBaseConlluOutputCanUseArchiveOrderStreaming() {
         val tool = KorapXmlTool()
         tool.outputFormat = OutputFormat.CONLLU
+        tool.zipFileNames = arrayOf("/tmp/sample.zip")
+
+        assertTrue(tool.canUseArchiveOrderTextStreaming())
+        assertTrue(tool.canUseStaxTextParsing())
+    }
+
+    @Test
+    fun conlluOutputWithFoundryZipKeepsOrderedPipeline() {
+        val tool = KorapXmlTool()
+        tool.outputFormat = OutputFormat.CONLLU
+        tool.zipFileNames = arrayOf("/tmp/sample.spacy.zip")
+
+        assertTrue(!tool.canUseArchiveOrderTextStreaming())
+        assertTrue(tool.canUseStaxTextParsing())
+    }
+
+    @Test
+    fun conlluOutputWithMultipleZipInputsKeepsOrderedPipeline() {
+        val tool = KorapXmlTool()
+        tool.outputFormat = OutputFormat.CONLLU
+        tool.zipFileNames = arrayOf("/tmp/sample.zip", "/tmp/sample.spacy.zip")
 
         assertTrue(!tool.canUseArchiveOrderTextStreaming())
         assertTrue(tool.canUseStaxTextParsing())