diff --git a/cpdfcommand.ml b/cpdfcommand.ml
index e2524eb..c4257b9 100644
--- a/cpdfcommand.ml
+++ b/cpdfcommand.ml
@@ -449,7 +449,6 @@ type args =
    mutable createpdf_pagesize : Pdfpaper.t;
    mutable removeonly : string option;
    mutable jsonparsecontentstreams : bool;
-   mutable jsonprecombinecontentstreams : bool;
    mutable jsonnostreamdata : bool;
    mutable jsondecompressstreams : bool;
    mutable ocgrenamefrom : string;
@@ -555,7 +554,6 @@ let args =
    createpdf_pagesize = Pdfpaper.a4;
    removeonly = None;
    jsonparsecontentstreams = false;
-   jsonprecombinecontentstreams = false;
    jsonnostreamdata = false;
    jsondecompressstreams = false;
    ocgrenamefrom = "";
@@ -646,7 +644,6 @@ let reset_arguments () =
   args.createpdf_pagesize <- Pdfpaper.a4;
   args.removeonly <- None;
   args.jsonparsecontentstreams <- false;
-  args.jsonprecombinecontentstreams <- false;
   args.jsonnostreamdata <- false;
   args.jsondecompressstreams <- false;
   args.ocgrenamefrom <- "";
@@ -1502,9 +1499,6 @@ let setgsquiet () =
 let setjsonparsecontentstreams () =
   args.jsonparsecontentstreams <- true
 
-let setjsonprecombinecontentstreams () =
-  args.jsonprecombinecontentstreams <- true
-
 let setjsonnostreamdata () =
   args.jsonnostreamdata <- true
 
@@ -2199,9 +2193,6 @@ and specs =
    ("-output-json-parse-content-streams",
      Arg.Unit setjsonparsecontentstreams,
      " Parse content streams");
-   ("-output-json-precombine-content-streams",
-     Arg.Unit setjsonprecombinecontentstreams,
-     " Precombine content streams");
    ("-output-json-no-stream-data",
      Arg.Unit setjsonnostreamdata,
      " Skip stream data for brevity");
@@ -3417,7 +3408,6 @@ let write_json output pdf =
         ~parse_content:args.jsonparsecontentstreams
         ~no_stream_data:args.jsonnostreamdata
         ~decompress_streams:args.jsondecompressstreams
-        ~precombine_page_content:args.jsonprecombinecontentstreams
         pdf
   | File filename ->
       let f = open_out filename in
@@ -3426,7 +3416,6 @@ let write_json output pdf =
           ~parse_content:args.jsonparsecontentstreams
           ~no_stream_data:args.jsonnostreamdata
           ~decompress_streams:args.jsondecompressstreams
-          ~precombine_page_content:args.jsonprecombinecontentstreams
           pdf;
         close_out f
 
diff --git a/cpdfjson.ml b/cpdfjson.ml
index ffc7641..fb8eba0 100644
--- a/cpdfjson.ml
+++ b/cpdfjson.ml
@@ -287,10 +287,10 @@ let json_of_op pdf no_stream_data = function
   | O.Op_M m -> `List [mkfloat m; `String "M"]
   | O.Op_ri s -> `List [`String s; `String "ri"]
   | O.Op_i i -> `List [mkint i; `String "i"]
-  | O.Op_c (a, b, c, d, e, k) ->
+  | O.Op_c (a, b, c, d, e, f) ->
       `List
         [mkfloat a; mkfloat b; mkfloat c;
-         mkfloat d; mkfloat e; mkfloat k; `String "c"]
+         mkfloat d; mkfloat e; mkfloat f; `String "c"]
   | O.Op_v (a, b, c, d) ->
       `List
         [mkfloat a; mkfloat b; mkfloat c;
@@ -318,10 +318,10 @@ let json_of_op pdf no_stream_data = function
   | O.Op_' s -> `List [`String s; `String "'"]
   | O.Op_'' (k, k', s) -> `List [mkfloat k; mkfloat k'; `String s; `String "''"]
   | O.Op_d0 (k, k') -> `List [mkfloat k; mkfloat k'; `String "d0"]
-  | O.Op_d1 (a, b, c, d, e, k) ->
+  | O.Op_d1 (a, b, c, d, e, f) ->
       `List
         [mkfloat a; mkfloat b; mkfloat c;
-         mkfloat d; mkfloat e; mkfloat k; `String "d1"]
+         mkfloat d; mkfloat e; mkfloat f; `String "d1"]
   | O.Op_cs s -> `List [`String s; `String "cs"]
   | O.Op_SC fs -> `List (map (fun x -> mkfloat x) fs @ [`String "SC"])
   | O.Op_sc fs -> `List (map (fun x -> mkfloat x) fs @ [`String "sc"])
@@ -354,7 +354,7 @@ let parse_content_stream pdf resources bs =
    if not split on op boundaries, each one would fail to parse on its own. The
    caller should really only do this on otherwise-failing files, since it could
    blow up any shared content streams. *)
-let do_precombine_page_content pdf =
+let precombine_page_content pdf =
   let pages' =
     map
       (fun page ->
@@ -371,10 +371,10 @@ let do_precombine_page_content pdf =
     Pdfpage.change_pages true pdf pages'
 
 let json_of_pdf
-  ~parse_content ~no_stream_data ~decompress_streams ~precombine_page_content
+  ~parse_content ~no_stream_data ~decompress_streams
   pdf
 =
-  let pdf = if parse_content && precombine_page_content then do_precombine_page_content pdf else pdf in
+  let pdf = if parse_content then precombine_page_content pdf else pdf in
   if decompress_streams then
     Pdf.objiter (fun _ obj -> Pdfcodec.decode_pdfstream_until_unknown pdf obj) pdf;
   Pdf.remove_unreferenced pdf;
@@ -432,8 +432,8 @@ let json_of_pdf
           (fun (objnum, jsonobj) -> `List [`Int objnum; jsonobj])
           pairs_parsed)
 
-let to_output o ~parse_content ~no_stream_data ~decompress_streams ~precombine_page_content pdf =
-  let json = json_of_pdf ~parse_content ~no_stream_data ~decompress_streams ~precombine_page_content pdf in
+let to_output o ~parse_content ~no_stream_data ~decompress_streams pdf =
+  let json = json_of_pdf ~parse_content ~no_stream_data ~decompress_streams pdf in
     match o.Pdfio.out_caml_channel with
     | Some ch -> J.pretty_to_channel ch json
     | None -> o.Pdfio.output_string (J.pretty_to_string json)
diff --git a/cpdfjson.mli b/cpdfjson.mli
index 1e7b837..6abe8cb 100644
--- a/cpdfjson.mli
+++ b/cpdfjson.mli
@@ -1,2 +1,2 @@
-val to_output : Pdfio.output -> parse_content:bool -> no_stream_data:bool -> decompress_streams:bool -> precombine_page_content:bool -> Pdf.t -> unit
+val to_output : Pdfio.output -> parse_content:bool -> no_stream_data:bool -> decompress_streams:bool -> Pdf.t -> unit
 val of_input : Pdfio.input -> Pdf.t