diff --git a/pitfall/pitfall/document.rkt b/pitfall/pitfall/document.rkt
index 5a33a524..23ab12fa 100644
--- a/pitfall/pitfall/document.rkt
+++ b/pitfall/pitfall/document.rkt
@@ -1,9 +1,9 @@
 #lang pitfall/racket
 (require "reference.rkt" "object.rkt" "page.rkt")
-(require "vector.rkt" "color.rkt" "fonts.rkt" "text.rkt")
+(require "vector.rkt" "color.rkt" "fonts.rkt" "text.rkt" "images.rkt")
 (provide PDFDocument)
 
-(define mixed% (text-mixin (fonts-mixin (color-mixin (vector-mixin object%)))))
+(define mixed% (image-mixin (text-mixin (fonts-mixin (color-mixin (vector-mixin object%))))))
 
 (define PDFDocument
   (class mixed% ; actually is an instance of readable.Stream, which is an input port
@@ -42,7 +42,7 @@
     (· this initVector)
     (· this initFonts)
     (· this initText)
-    #;(· this initImages) ; todo
+    (· this initImages)
 
     (as-methods
      addPage
diff --git a/pitfall/pitfall/image.rkt b/pitfall/pitfall/image.rkt
new file mode 100644
index 00000000..ae3fe392
--- /dev/null
+++ b/pitfall/pitfall/image.rkt
@@ -0,0 +1,27 @@
+#lang pitfall/racket
+(provide PDFImage)
+
+(define PDFImage
+  (class object%
+    (super-new)
+
+    (as-methods
+     open)))
+
+
+(define/contract (open this src label)
+  (any/c any/c . ->m . bytes?)
+  (define data (cond
+                 [(isBuffer? src) src]
+                 ;;else if src instanceof ArrayBuffer
+                 ;;data = new Buffer(new Uint8Array(src))
+                 [(regexp-match #rx"^data:.+;base64,(.*)$" src)
+                  (void)] ;; base64 ; todo
+                 [else (file->bytes src)]))
+  (cond
+    [(equal? (subbytes data 0 2) (bytes #xff #xd8))
+     'doJpeg]
+    [(equal? (subbytes data 0 4) (apply bytes (cons #x89 (map char->integer '(#\P #\N #\G)))))
+     'doPNG]
+    [else (raise-argument-error 'PDFImage-open "valid image format" src)]))
+           
diff --git a/pitfall/pitfall/images.rkt b/pitfall/pitfall/images.rkt
new file mode 100644
index 00000000..dbd0e239
--- /dev/null
+++ b/pitfall/pitfall/images.rkt
@@ -0,0 +1,21 @@
+#lang pitfall/racket
+(require "image.rkt")
+(provide image-mixin)
+
+(define (image-mixin [% mixin-tester%])
+  (class %
+    (super-new)
+    #;(field [_opacityRegistry #f]
+           [_opacityCount #f]
+           [_gradCount #f]
+           [_fillColor #f])
+
+    (as-methods
+    )))
+
+    
+#;(define/contract (initColor this)
+  (->m void?)
+  (set-field! _opacityRegistry this (mhash))
+  (set-field! _opacityCount this 0)
+  (set-field! _gradCount this 0))