diff --git a/lib/crc32.js b/lib/crc32.js
new file mode 100644
index 00000000..48d4a4a4
--- /dev/null
+++ b/lib/crc32.js
@@ -0,0 +1,102 @@
+'use strict';
+
+var utils = require('./utils');
+
+var table = [
+    0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
+    0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
+    0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
+    0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
+    0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
+    0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
+    0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
+    0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
+    0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
+    0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
+    0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
+    0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
+    0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
+    0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
+    0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
+    0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
+    0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
+    0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
+    0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
+    0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
+    0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
+    0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
+    0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
+    0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
+    0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
+    0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
+    0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
+    0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
+    0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
+    0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
+    0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
+    0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
+    0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
+    0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
+    0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
+    0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
+    0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
+    0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
+    0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
+    0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
+    0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
+    0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
+    0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
+    0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
+    0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
+    0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
+    0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
+    0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
+    0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
+    0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
+    0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
+    0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
+    0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
+    0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
+    0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
+    0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
+    0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
+    0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
+    0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
+    0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
+    0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
+    0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
+    0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
+    0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
+];
+
+/**
+ *
+ *  Javascript crc32
+ *  http://www.webtoolkit.info/
+ *
+ */
+module.exports = function crc32(input, crc) {
+    if (typeof input === "undefined" || !input.length) {
+        return 0;
+    }
+
+    var isArray = utils.getTypeOf(input) !== "string";
+
+    if (typeof(crc) == "undefined") {
+        crc = 0;
+    }
+    var x = 0;
+    var y = 0;
+    var b = 0;
+
+    crc = crc ^ (-1);
+    for (var i = 0, iTop = input.length; i < iTop; i++) {
+        b = isArray ? input[i] : input.charCodeAt(i);
+        y = (crc ^ b) & 0xFF;
+        x = table[y];
+        crc = (crc >>> 8) ^ x;
+    }
+
+    return crc ^ (-1);
+};
+// vim: set shiftwidth=4 softtabstop=4:
diff --git a/lib/deprecatedPublicUtils.js b/lib/deprecatedPublicUtils.js
new file mode 100644
index 00000000..0c6b9b8e
--- /dev/null
+++ b/lib/deprecatedPublicUtils.js
@@ -0,0 +1,105 @@
+'use strict';
+var utils = require('./utils');
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.string2binary = function(str) {
+    return utils.string2binary(str);
+};
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.string2Uint8Array = function(str) {
+    return utils.transformTo("uint8array", str);
+};
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.uint8Array2String = function(array) {
+    return utils.transformTo("string", array);
+};
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.string2Blob = function(str) {
+    var buffer = utils.transformTo("arraybuffer", str);
+    return utils.arrayBuffer2Blob(buffer);
+};
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.arrayBuffer2Blob = function(buffer) {
+    return utils.arrayBuffer2Blob(buffer);
+};
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.transformTo = function(outputType, input) {
+    return utils.transformTo(outputType, input);
+};
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.getTypeOf = function(input) {
+    return utils.getTypeOf(input);
+};
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.checkSupport = function(type) {
+    return utils.checkSupport(type);
+};
+
+/**
+ * @deprecated
+ * This value will be removed in a future version without replacement.
+ */
+exports.MAX_VALUE_16BITS = utils.MAX_VALUE_16BITS;
+
+/**
+ * @deprecated
+ * This value will be removed in a future version without replacement.
+ */
+exports.MAX_VALUE_32BITS = utils.MAX_VALUE_32BITS;
+
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.pretty = function(str) {
+    return utils.pretty(str);
+};
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.findCompression = function(compressionMethod) {
+    return utils.findCompression(compressionMethod);
+};
+
+/**
+ * @deprecated
+ * This function will be removed in a future version without replacement.
+ */
+exports.isRegExp = function (object) {
+    return utils.isRegExp(object);
+};
+
diff --git a/lib/index.js b/lib/index.js
index 44679534..4d6fd099 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1,4 +1,7 @@
 'use strict';
+
+var base64 = require('./base64');
+
 /**
 Usage:
    zip = new JSZip();
@@ -47,7 +50,28 @@ JSZip.prototype = require('./object');
 JSZip.prototype.load = require('./load');
 JSZip.support = require('./support');
 JSZip.defaults = require('./defaults');
-JSZip.utils = require('./utils');
-JSZip.base64 = require('./base64');
+
+/**
+ * @deprecated
+ * This namespace will be removed in a future version without replacement.
+ */
+JSZip.utils = require('./deprecatedPublicUtils');
+
+JSZip.base64 = {
+    /**
+     * @deprecated
+     * This method will be removed in a future version without replacement.
+     */
+    encode : function(input) {
+        return base64.encode(input);
+    },
+    /**
+     * @deprecated
+     * This method will be removed in a future version without replacement.
+     */
+    decode : function(input) {
+        return base64.decode(input);
+    }
+};
 JSZip.compressions = require('./compressions');
 module.exports = JSZip;
diff --git a/lib/object.js b/lib/object.js
index f5d603a6..4a555e9e 100644
--- a/lib/object.js
+++ b/lib/object.js
@@ -1,28 +1,27 @@
 'use strict';
 var support = require('./support');
 var utils = require('./utils');
+var crc32 = require('./crc32');
 var signature = require('./signature');
 var defaults = require('./defaults');
 var base64 = require('./base64');
 var compressions = require('./compressions');
 var CompressedObject = require('./compressedObject');
 var nodeBuffer = require('./nodeBuffer');
+var utf8 = require('./utf8');
+var StringWriter = require('./stringWriter');
+var Uint8ArrayWriter = require('./uint8ArrayWriter');
+
+var textEncoder;
+if (support.uint8array && typeof TextEncoder === "function") {
+    textEncoder = new TextEncoder("utf-8");
+}
+
 /**
  * Returns the raw data of a ZipObject, decompress the content if necessary.
  * @param {ZipObject} file the file to use.
  * @return {String|ArrayBuffer|Uint8Array|Buffer} the data.
  */
-
-var textEncoder, textDecoder;
-if (
-    support.uint8array &&
-    typeof TextEncoder === "function" &&
-    typeof TextDecoder === "function"
-) {
-    textEncoder = new TextEncoder("utf-8");
-    textDecoder = new TextDecoder("utf-8");
-}
-
 var getRawData = function(file) {
     if (file._data instanceof CompressedObject) {
         file._data = file._data.getContent();
@@ -309,7 +308,7 @@ var generateCompressedObjectFrom = function(file, compression) {
             content = "";
         }
         result.uncompressedSize = content.length;
-        result.crc32 = this.crc32(content);
+        result.crc32 = crc32(content);
         result.compressedContent = compression.compress(utils.transformTo(compression.compressInputType, content));
     }
 
@@ -368,7 +367,7 @@ var generateZipParts = function(name, file, compressedObject, offset) {
             // Version
             decToHex(1, 1) +
             // NameCRC32
-            decToHex(this.crc32(utfEncodedFileName), 4) +
+            decToHex(crc32(utfEncodedFileName), 4) +
             // UnicodeName
             utfEncodedFileName;
 
@@ -436,60 +435,6 @@ var generateZipParts = function(name, file, compressedObject, offset) {
     };
 };
 
-/**
- * An object to write any content to a string.
- * @constructor
- */
-var StringWriter = function() {
-    this.data = [];
-};
-StringWriter.prototype = {
-    /**
-     * Append any content to the current string.
-     * @param {Object} input the content to add.
-     */
-    append: function(input) {
-        input = utils.transformTo("string", input);
-        this.data.push(input);
-    },
-    /**
-     * Finalize the construction an return the result.
-     * @return {string} the generated string.
-     */
-    finalize: function() {
-        return this.data.join("");
-    }
-};
-/**
- * An object to write any content to an Uint8Array.
- * @constructor
- * @param {number} length The length of the array.
- */
-var Uint8ArrayWriter = function(length) {
-    this.data = new Uint8Array(length);
-    this.index = 0;
-};
-Uint8ArrayWriter.prototype = {
-    /**
-     * Append any content to the current array.
-     * @param {Object} input the content to add.
-     */
-    append: function(input) {
-        if (input.length !== 0) {
-            // with an empty Uint8Array, Opera fails with a "Offset larger than array size"
-            input = utils.transformTo("uint8array", input);
-            this.data.set(input, this.index);
-            this.index += input.length;
-        }
-    },
-    /**
-     * Finalize the construction an return the result.
-     * @return {Uint8Array} the generated array.
-     */
-    finalize: function() {
-        return this.data;
-    }
-};
 
 // return the actual prototype of JSZip
 var out = {
@@ -724,194 +669,27 @@ var out = {
     },
 
     /**
-     *
-     *  Javascript crc32
-     *  http://www.webtoolkit.info/
-     *
+     * @deprecated
+     * This method will be removed in a future version without replacement.
      */
-    crc32: function crc32(input, crc) {
-        if (typeof input === "undefined" || !input.length) {
-            return 0;
-        }
-
-        var isArray = utils.getTypeOf(input) !== "string";
-
-        var table = [
-        0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
-        0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
-        0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
-        0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
-        0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
-        0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
-        0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
-        0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
-        0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
-        0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
-        0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
-        0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
-        0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
-        0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
-        0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
-        0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
-        0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
-        0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
-        0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
-        0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
-        0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
-        0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
-        0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
-        0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
-        0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
-        0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
-        0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
-        0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
-        0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
-        0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
-        0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
-        0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
-        0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
-        0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
-        0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
-        0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
-        0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
-        0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
-        0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
-        0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
-        0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
-        0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
-        0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
-        0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
-        0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
-        0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
-        0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
-        0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
-        0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
-        0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
-        0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
-        0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
-        0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
-        0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
-        0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
-        0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
-        0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
-        0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
-        0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
-        0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
-        0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
-        0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
-        0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
-        0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D];
-
-        if (typeof(crc) == "undefined") {
-            crc = 0;
-        }
-        var x = 0;
-        var y = 0;
-        var b = 0;
-
-        crc = crc ^ (-1);
-        for (var i = 0, iTop = input.length; i < iTop; i++) {
-            b = isArray ? input[i] : input.charCodeAt(i);
-            y = (crc ^ b) & 0xFF;
-            x = table[y];
-            crc = (crc >>> 8) ^ x;
-        }
-
-        return crc ^ (-1);
+    crc32: function (input, crc) {
+        return crc32(input, crc);
     },
 
-    // Inspired by http://my.opera.com/GreyWyvern/blog/show.dml/1725165
-
     /**
-     * http://www.webtoolkit.info/javascript-utf8.html
+     * @deprecated
+     * This method will be removed in a future version without replacement.
      */
-    utf8encode: function(string) {
-        // TextEncoder + Uint8Array to binary string is faster than checking every bytes on long strings.
-        // http://jsperf.com/utf8encode-vs-textencoder
-        // On short strings (file names for example), the TextEncoder API is (currently) slower.
-        if (textEncoder) {
-            var u8 = textEncoder.encode(string);
-            return utils.transformTo("string", u8);
-        }
-        if (support.nodebuffer) {
-            return utils.transformTo("string", nodeBuffer(string, "utf-8"));
-        }
-
-        // array.join may be slower than string concatenation but generates less objects (less time spent garbage collecting).
-        // See also http://jsperf.com/array-direct-assignment-vs-push/31
-        var result = [],
-            resIndex = 0;
-
-        for (var n = 0; n < string.length; n++) {
-
-            var c = string.charCodeAt(n);
-
-            if (c < 128) {
-                result[resIndex++] = String.fromCharCode(c);
-            }
-            else if ((c > 127) && (c < 2048)) {
-                result[resIndex++] = String.fromCharCode((c >> 6) | 192);
-                result[resIndex++] = String.fromCharCode((c & 63) | 128);
-            }
-            else {
-                result[resIndex++] = String.fromCharCode((c >> 12) | 224);
-                result[resIndex++] = String.fromCharCode(((c >> 6) & 63) | 128);
-                result[resIndex++] = String.fromCharCode((c & 63) | 128);
-            }
-
-        }
-
-        return result.join("");
+    utf8encode: function (string) {
+        return utf8.utf8encode(string);
     },
 
     /**
-     * http://www.webtoolkit.info/javascript-utf8.html
+     * @deprecated
+     * This method will be removed in a future version without replacement.
      */
-    utf8decode: function(input) {
-        var result = [],
-            resIndex = 0;
-        var type = utils.getTypeOf(input);
-        var isArray = type !== "string";
-        var i = 0;
-        var c = 0,
-            c1 = 0,
-            c2 = 0,
-            c3 = 0;
-
-        // check if we can use the TextDecoder API
-        // see http://encoding.spec.whatwg.org/#api
-        if (textDecoder) {
-            return textDecoder.decode(
-                utils.transformTo("uint8array", input)
-            );
-        }
-        if (support.nodebuffer) {
-            return utils.transformTo("nodebuffer", input).toString("utf-8");
-        }
-
-        while (i < input.length) {
-
-            c = isArray ? input[i] : input.charCodeAt(i);
-
-            if (c < 128) {
-                result[resIndex++] = String.fromCharCode(c);
-                i++;
-            }
-            else if ((c > 191) && (c < 224)) {
-                c2 = isArray ? input[i + 1] : input.charCodeAt(i + 1);
-                result[resIndex++] = String.fromCharCode(((c & 31) << 6) | (c2 & 63));
-                i += 2;
-            }
-            else {
-                c2 = isArray ? input[i + 1] : input.charCodeAt(i + 1);
-                c3 = isArray ? input[i + 2] : input.charCodeAt(i + 2);
-                result[resIndex++] = String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
-                i += 3;
-            }
-
-        }
-
-        return result.join("");
+    utf8decode: function (input) {
+        return utf8.utf8decode(input);
     }
 };
 module.exports = out;
diff --git a/lib/stringWriter.js b/lib/stringWriter.js
new file mode 100644
index 00000000..45db5484
--- /dev/null
+++ b/lib/stringWriter.js
@@ -0,0 +1,30 @@
+'use strict';
+
+var utils = require('./utils');
+
+/**
+ * An object to write any content to a string.
+ * @constructor
+ */
+var StringWriter = function() {
+    this.data = [];
+};
+StringWriter.prototype = {
+    /**
+     * Append any content to the current string.
+     * @param {Object} input the content to add.
+     */
+    append: function(input) {
+        input = utils.transformTo("string", input);
+        this.data.push(input);
+    },
+    /**
+     * Finalize the construction an return the result.
+     * @return {string} the generated string.
+     */
+    finalize: function() {
+        return this.data.join("");
+    }
+};
+
+module.exports = StringWriter;
diff --git a/lib/uint8ArrayWriter.js b/lib/uint8ArrayWriter.js
new file mode 100644
index 00000000..405397f7
--- /dev/null
+++ b/lib/uint8ArrayWriter.js
@@ -0,0 +1,36 @@
+'use strict';
+
+var utils = require('./utils');
+
+/**
+ * An object to write any content to an Uint8Array.
+ * @constructor
+ * @param {number} length The length of the array.
+ */
+var Uint8ArrayWriter = function(length) {
+    this.data = new Uint8Array(length);
+    this.index = 0;
+};
+Uint8ArrayWriter.prototype = {
+    /**
+     * Append any content to the current array.
+     * @param {Object} input the content to add.
+     */
+    append: function(input) {
+        if (input.length !== 0) {
+            // with an empty Uint8Array, Opera fails with a "Offset larger than array size"
+            input = utils.transformTo("uint8array", input);
+            this.data.set(input, this.index);
+            this.index += input.length;
+        }
+    },
+    /**
+     * Finalize the construction an return the result.
+     * @return {Uint8Array} the generated array.
+     */
+    finalize: function() {
+        return this.data;
+    }
+};
+
+module.exports = Uint8ArrayWriter;
diff --git a/lib/utf8.js b/lib/utf8.js
new file mode 100644
index 00000000..d8b9f114
--- /dev/null
+++ b/lib/utf8.js
@@ -0,0 +1,109 @@
+'use strict';
+
+var utils = require('./utils');
+var support = require('./support');
+var nodeBuffer = require('./nodeBuffer');
+
+var textEncoder, textDecoder;
+if (
+    support.uint8array &&
+    typeof TextEncoder === "function" &&
+    typeof TextDecoder === "function"
+) {
+    textEncoder = new TextEncoder("utf-8");
+    textDecoder = new TextDecoder("utf-8");
+}
+
+/**
+ * http://www.webtoolkit.info/javascript-utf8.html
+ */
+exports.utf8encode = function utf8encode(string) {
+    // TextEncoder + Uint8Array to binary string is faster than checking every bytes on long strings.
+    // http://jsperf.com/utf8encode-vs-textencoder
+    // On short strings (file names for example), the TextEncoder API is (currently) slower.
+    if (textEncoder) {
+        var u8 = textEncoder.encode(string);
+        return utils.transformTo("string", u8);
+    }
+    if (support.nodebuffer) {
+        return utils.transformTo("string", nodeBuffer(string, "utf-8"));
+    }
+
+    // array.join may be slower than string concatenation but generates less objects (less time spent garbage collecting).
+    // See also http://jsperf.com/array-direct-assignment-vs-push/31
+    var result = [],
+    resIndex = 0;
+
+    for (var n = 0; n < string.length; n++) {
+
+        var c = string.charCodeAt(n);
+
+        if (c < 128) {
+            result[resIndex++] = String.fromCharCode(c);
+        }
+        else if ((c > 127) && (c < 2048)) {
+            result[resIndex++] = String.fromCharCode((c >> 6) | 192);
+            result[resIndex++] = String.fromCharCode((c & 63) | 128);
+        }
+        else {
+            result[resIndex++] = String.fromCharCode((c >> 12) | 224);
+            result[resIndex++] = String.fromCharCode(((c >> 6) & 63) | 128);
+            result[resIndex++] = String.fromCharCode((c & 63) | 128);
+        }
+
+    }
+
+    return result.join("");
+};
+
+
+/**
+ * http://www.webtoolkit.info/javascript-utf8.html
+ */
+exports.utf8decode = function utf8decode(input) {
+    var result = [],
+    resIndex = 0;
+    var type = utils.getTypeOf(input);
+    var isArray = type !== "string";
+    var i = 0;
+    var c = 0,
+    c1 = 0,
+    c2 = 0,
+    c3 = 0;
+
+    // check if we can use the TextDecoder API
+    // see http://encoding.spec.whatwg.org/#api
+    if (textDecoder) {
+        return textDecoder.decode(
+            utils.transformTo("uint8array", input)
+        );
+    }
+    if (support.nodebuffer) {
+        return utils.transformTo("nodebuffer", input).toString("utf-8");
+    }
+
+    while (i < input.length) {
+
+        c = isArray ? input[i] : input.charCodeAt(i);
+
+        if (c < 128) {
+            result[resIndex++] = String.fromCharCode(c);
+            i++;
+        }
+        else if ((c > 191) && (c < 224)) {
+            c2 = isArray ? input[i + 1] : input.charCodeAt(i + 1);
+            result[resIndex++] = String.fromCharCode(((c & 31) << 6) | (c2 & 63));
+            i += 2;
+        }
+        else {
+            c2 = isArray ? input[i + 1] : input.charCodeAt(i + 1);
+            c3 = isArray ? input[i + 2] : input.charCodeAt(i + 2);
+            result[resIndex++] = String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
+            i += 3;
+        }
+
+    }
+
+    return result.join("");
+};
+// vim: set shiftwidth=4 softtabstop=4:
diff --git a/lib/utils.js b/lib/utils.js
index 219c53f9..91c5d8fc 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -14,35 +14,6 @@ exports.string2binary = function(str) {
     }
     return result;
 };
-/**
- * Create a Uint8Array from the string.
- * @param {string} str the string to transform.
- * @return {Uint8Array} the typed array.
- * @throws {Error} an Error if the browser doesn't support the requested feature.
- */
-exports.string2Uint8Array = function(str) {
-    return exports.transformTo("uint8array", str);
-};
-
-/**
- * Create a string from the Uint8Array.
- * @param {Uint8Array} array the array to transform.
- * @return {string} the string.
- * @throws {Error} an Error if the browser doesn't support the requested feature.
- */
-exports.uint8Array2String = function(array) {
-    return exports.transformTo("string", array);
-};
-/**
- * Create a blob from the given string.
- * @param {string} str the string to transform.
- * @return {Blob} the string.
- * @throws {Error} an Error if the browser doesn't support the requested feature.
- */
-exports.string2Blob = function(str) {
-    var buffer = exports.transformTo("arraybuffer", str);
-    return exports.arrayBuffer2Blob(buffer);
-};
 exports.arrayBuffer2Blob = function(buffer) {
     exports.checkSupport("blob");