diff --git a/src/main/java/com/openhtmltopdf/cli/App.java b/src/main/java/com/openhtmltopdf/cli/App.java
index b5301b6..d96c98f 100644
--- a/src/main/java/com/openhtmltopdf/cli/App.java
+++ b/src/main/java/com/openhtmltopdf/cli/App.java
@@ -64,6 +64,12 @@ public static class Run implements Callable<Integer> {
         )
         boolean block;
 
+        @Option(
+            names = { "--accessible", "-a"},
+            description = "Force PDF/UA Conformance"
+        )
+        boolean accessible;
+
         @Override
         public Integer call() throws Exception {
             if (quiet && !verbose) {
@@ -95,6 +101,11 @@ public Integer call() throws Exception {
                     builder.withFile(input);
                 }
 
+                if (accessible) {
+                    builder.usePdfUaAccessbility(true);
+                    builder.usePdfAConformance(PdfRendererBuilder.PdfAConformance.PDFA_3_U);
+                }
+
                 builder.toStream(os);
                 builder.useFastMode();
                 builder.run();