diff --git a/libvips/iofuncs/generate.c b/libvips/iofuncs/generate.c
index 65be8d9c..0f1e42ac 100644
--- a/libvips/iofuncs/generate.c
+++ b/libvips/iofuncs/generate.c
@@ -382,6 +382,17 @@ int
 vips_image_pipeline_array( VipsImage *image, 
 	VipsDemandStyle hint, VipsImage **in )
 {
+	/* Ban large images while we are fuzzing. They cause unintersting 
+	 * timeouts and OOMs.
+	 */
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+	if( (size_t) image->Xsize * image->Ysize * image->Bands > 1000000 ) {
+		vips_error( "vips_image_pipeline_array", 
+			"%s", _( "no large images during fuzzing" ) );
+		return( -1 );
+	}
+#endif /*FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION*/
+
 	/* This function can be called more than once per output image. For
 	 * example, jpeg header load will call this once on ->out to set the
 	 * default hint, then later call it again to connect the output image