Use a cache to minimize the number of Name objects.

src/core/crypto.js

@@ -548,7 +548,7 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() {
     return userPassword;
   }
 
-  var identityName = new Name('Identity');
+  var identityName = Name.get('Identity');
 
   function CipherTransformFactory(dict, fileId, password) {
     var filter = dict.get('Filter');

src/core/evaluator.js

@@ -1102,7 +1102,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
           // FontDescriptor is only required for Type3 fonts when the document
           // is a tagged pdf. Create a barbebones one to get by.
           descriptor = new Dict();
-          descriptor.set('FontName', new Name(type.name));
+          descriptor.set('FontName', Name.get(type.name));
         } else {
           // Before PDF 1.5 if the font was one of the base 14 fonts, having a
           // FontDescriptor was not required.
@@ -1150,10 +1150,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
       var baseFont = dict.get('BaseFont');
       // Some bad pdf's have a string as the font name.
       if (isString(fontName)) {
-        fontName = new Name(fontName);
+        fontName = Name.get(fontName);
       }
       if (isString(baseFont)) {
-        baseFont = new Name(baseFont);
+        baseFont = Name.get(baseFont);
       }
 
       if (type.name !== 'Type3') {

src/core/image.js

@@ -88,7 +88,7 @@ var PDFImage = (function PDFImageClosure() {
       var colorSpace = dict.get('ColorSpace', 'CS');
       if (!colorSpace) {
         warn('JPX images (which don"t require color spaces');
-        colorSpace = new Name('DeviceRGB');
+        colorSpace = Name.get('DeviceRGB');
       }
       this.colorSpace = ColorSpace.parse(colorSpace, xref, res);
       this.numComps = this.colorSpace.numComps;

src/core/obj.js

@@ -30,6 +30,13 @@ var Name = (function NameClosure() {
 
   Name.prototype = {};
 
+  var nameCache = {};
+
+  Name.get = function Name_get(name) {
+    var nameValue = nameCache[name];
+    return nameValue ? nameValue : (nameCache[name] = new Name(name));
+  };
+
   return Name;
 })();
 
@@ -44,10 +51,7 @@ var Cmd = (function CmdClosure() {
 
   Cmd.get = function Cmd_get(cmd) {
     var cmdValue = cmdCache[cmd];
-    if (cmdValue)
-      return cmdValue;
-
-    return cmdCache[cmd] = new Cmd(cmd);
+    return cmdValue ? cmdValue : (cmdCache[cmd] = new Cmd(cmd));
   };
 
   return Cmd;

src/core/parser.js

@@ -586,7 +586,7 @@ var Lexer = (function LexerClosure() {
         error('Warning: name token is longer than allowed by the spec: ' +
               strBuf.length);
       }
-      return new Name(strBuf.join(''));
+      return Name.get(strBuf.join(''));
     },
     getHexString: function Lexer_getHexString() {
       var strBuf = this.strBuf;