diff --git a/Makefile b/Makefile
index 17577c9..6a1e13c 100644
--- a/Makefile
+++ b/Makefile
@@ -7,8 +7,8 @@ DOC = cpdfunicodedata cpdferror cpdfdebug cpdfjson cpdfstrftime cpdfcoord \
       cpdfembed cpdffont cpdftype cpdfaddtext cpdfpad cpdfocg \
       cpdfsqueeze cpdfdraft cpdfspot cpdfpagelabels cpdfcreate cpdfannot \
       cpdfxobject cpdfimpose cpdfchop cpdftweak cpdftexttopdf cpdftoc \
-      cpdfjpeg cpdfjpeg2000 cpdfpng cpdfimage cpdfdraw cpdfcomposition \
-      cpdfshape cpdfcolours cpdfdrawcontrol cpdfprinttree cpdfua \
+      cpdfjpeg cpdfjpeg2000 cpdfpng cpdfprinttree cpdfua cpdfimage cpdfdraw \
+      cpdfcomposition cpdfshape cpdfcolours cpdfdrawcontrol \
       cpdfcommand
 
 MODS = $(NONDOC) $(DOC)
diff --git a/cpdfcommand.ml b/cpdfcommand.ml
index 49dd1fa..50a5e5e 100644
--- a/cpdfcommand.ml
+++ b/cpdfcommand.ml
@@ -1025,7 +1025,7 @@ let fixdashes s =
 let set_input_image f s =
   try
     let fh = open_in_bin s in
-    let pdf = Cpdfimage.image_of_input ~subformat:args.subformat ~title:args.title f (Pdfio.input_of_channel fh) in
+    let pdf = Cpdfimage.image_of_input ?subformat:args.subformat ?title:args.title f (Pdfio.input_of_channel fh) in
       begin try close_in fh with _ -> () end;
       args.original_filename <- s;
       args.create_objstm <- true;
@@ -4476,11 +4476,11 @@ let go () =
       begin match args.subformat with
       | Some Cpdfua.PDFUA1 ->
           begin match args.title with None -> error "Provide -title" | _ -> () end;
-          let pdf = Cpdfua.create_cpdfua1 (unopt args.title) args.createpdf_pagesize args.createpdf_pages in
+          let pdf = Cpdfua.create_pdfua1 (unopt args.title) args.createpdf_pagesize args.createpdf_pages in
             write_pdf false pdf
       | Some Cpdfua.PDFUA2 ->
           begin match args.title with None -> error "Provide -title" | _ -> () end;
-          let pdf = Cpdfua.create_cpdfua2 (unopt args.title) args.createpdf_pagesize args.createpdf_pages in
+          let pdf = Cpdfua.create_pdfua2 (unopt args.title) args.createpdf_pagesize args.createpdf_pages in
             write_pdf false pdf
       | None ->
           let pdf = Cpdfcreate.blank_document_paper args.createpdf_pagesize args.createpdf_pages in
diff --git a/cpdfimage.ml b/cpdfimage.ml
index e2429fa..b239c2c 100644
--- a/cpdfimage.ml
+++ b/cpdfimage.ml
@@ -494,7 +494,20 @@ let obj_of_jbig2_data ?global data =
     Pdf.Stream {contents = (Pdf.Dictionary d, Pdf.Got data)}, extra
 
 let image_of_input ?subformat ?title fobj i =
-  let pdf = Pdf.empty () in
+  let pdf =
+    match subformat with
+    | None -> Pdf.empty ()
+    | Some Cpdfua.PDFUA1 ->
+        begin match title with
+        | None -> error "no -title given" 
+        | Some title -> Cpdfua.create_pdfua1 title Pdfpaper.a4 1
+        end
+    | Some Cpdfua.PDFUA2 ->
+        begin match title with
+        | None -> error "no -title given"
+        | Some title -> Cpdfua.create_pdfua2 title Pdfpaper.a4 1
+        end
+  in
   let data = Pdfio.bytes_of_input i 0 i.Pdfio.in_channel_length in
   let obj, extras = fobj () data in
   iter (Pdf.addobj_given_num pdf) extras;
diff --git a/cpdfimage.mli b/cpdfimage.mli
index 040bb58..fb50ca1 100644
--- a/cpdfimage.mli
+++ b/cpdfimage.mli
@@ -25,7 +25,7 @@ val process :
   path_to_jbig2enc:string -> path_to_convert:string -> int list -> Pdf.t -> unit
 
 (**/**)
-val image_of_input : ?subformat:Cpdfua.subformat option -> ?title:string option -> (unit -> Pdfio.bytes -> Pdf.pdfobject * (int * Pdf.pdfobject) list) -> Pdfio.input -> Pdf.t
+val image_of_input : ?subformat:Cpdfua.subformat -> ?title:string -> (unit -> Pdfio.bytes -> Pdf.pdfobject * (int * Pdf.pdfobject) list) -> Pdfio.input -> Pdf.t
 val obj_of_jpeg_data : Pdfio.bytes -> Pdf.pdfobject * (int * Pdf.pdfobject) list
 val obj_of_png_data : Pdfio.bytes -> Pdf.pdfobject * (int * Pdf.pdfobject) list
 val obj_of_jbig2_data : ?global:Pdfio.bytes -> Pdfio.bytes -> Pdf.pdfobject * (int * Pdf.pdfobject) list
diff --git a/cpdfua.ml b/cpdfua.ml
index 9a7c40a..11d108e 100644
--- a/cpdfua.ml
+++ b/cpdfua.ml
@@ -1604,7 +1604,7 @@ let print_struct_tree pdf =
             ~get_children:(fun (E2 (_, _, cs)) -> cs)
             (remove_empty (remove_slashes st)))
 
-let create_cpdfua1 title pagesize pages =
+let create_pdfua1 title pagesize pages =
   let pdf = Cpdfcreate.blank_document_paper pagesize pages in
   let pdf = Cpdfmetadata.set_pdf_info ~xmp_also:false ~xmp_just_set:false ("/Title", Pdf.String title, 0) pdf in
   let pdf = Cpdfmetadata.create_metadata pdf in
@@ -1616,7 +1616,7 @@ let create_cpdfua1 title pagesize pages =
         mark pdf;
         pdf
 
-let create_cpdfua2 title pagesize pages =
+let create_pdfua2 title pagesize pages =
   let pdf = Cpdfcreate.blank_document_paper pagesize pages in
   let pdf = Cpdfmetadata.set_pdf_info ~xmp_also:false ~xmp_just_set:false ("/Title", Pdf.String title, 0) pdf in
   let pdf = Cpdfmetadata.create_metadata pdf in
diff --git a/cpdfua.mli b/cpdfua.mli
index 3a4c758..a84126b 100644
--- a/cpdfua.mli
+++ b/cpdfua.mli
@@ -30,6 +30,6 @@ val extract_struct_tree : Pdf.t -> Cpdfyojson.Safe.t
 (** Reapply an edited JSON structure tree to its PDF. *)
 val replace_struct_tree : Pdf.t -> Cpdfyojson.Safe.t -> unit
 
-val create_cpdfua1 : string -> Pdfpaper.t -> int -> Pdf.t
+val create_pdfua1 : string -> Pdfpaper.t -> int -> Pdf.t
 
-val create_cpdfua2 : string -> Pdfpaper.t -> int -> Pdf.t
+val create_pdfua2 : string -> Pdfpaper.t -> int -> Pdf.t