diff --git a/src/main/java/org/takes/facets/auth/PsBasic.java b/src/main/java/org/takes/facets/auth/PsBasic.java
index f7c73f037..7ccd5df2b 100644
--- a/src/main/java/org/takes/facets/auth/PsBasic.java
+++ b/src/main/java/org/takes/facets/auth/PsBasic.java
@@ -102,7 +102,7 @@ public Opt<Identity> enter(final Request request) throws IOException {
             DatatypeConverter.parseBase64Binary(
                 PsBasic.AUTH.split(headers.next())[1]
             )
-        ).string().trim();
+        ).asString().trim();
         final String user = decoded.split(":")[0];
         final Opt<Identity> identity = this.entry.enter(
             user,
@@ -309,7 +309,7 @@ private Opt<String> urn(final String user, final String pwd) {
         /**
          * Creates a key for
          *  {@link org.takes.facets.auth.PsBasic.Default#usernames} map.
-         * @param unified User string made of 3 urlencoded substrings
+         * @param unified User asString made of 3 urlencoded substrings
          *  separated with non-urlencoded space characters.
          * @return Login and password parts with <pre>%20</pre> replaced with
          *  <pre>+</pre>.
@@ -326,7 +326,7 @@ private static String key(final String unified) {
         }
 
         /**
-         * Checks if a unified user string is correctly formatted.
+         * Checks if a unified user asString is correctly formatted.
          * @param unified String with urlencoded user login, password and urn
          *  separated with spaces.
          */
@@ -345,9 +345,9 @@ private static void validateUser(final String unified) {
         }
 
         /**
-         * Counts spaces in a string.
-         * @param txt Any string.
-         * @return Amount of spaces in string.
+         * Counts spaces in a asString.
+         * @param txt Any asString.
+         * @return Amount of spaces in asString.
          */
         private static int countSpaces(final String txt) {
             int spaces = 0;
diff --git a/src/main/java/org/takes/facets/auth/PsCookie.java b/src/main/java/org/takes/facets/auth/PsCookie.java
index c8d5cc691..81321a2db 100644
--- a/src/main/java/org/takes/facets/auth/PsCookie.java
+++ b/src/main/java/org/takes/facets/auth/PsCookie.java
@@ -100,7 +100,7 @@ public Opt<Identity> enter(final Request req) throws IOException {
         if (cookies.hasNext()) {
             user = new Opt.Single<>(
                 this.codec.decode(
-                    new Utf8String(cookies.next()).bytes()
+                    new Utf8String(cookies.next()).asBytes()
                 )
             );
         }
@@ -114,7 +114,7 @@ public Response exit(final Response res,
         if (idt.equals(Identity.ANONYMOUS)) {
             text = "";
         } else {
-            text = new Utf8String(this.codec.encode(idt)).string();
+            text = new Utf8String(this.codec.encode(idt)).asString();
         }
         return new RsWithCookie(
             res, this.cookie, text,
diff --git a/src/main/java/org/takes/facets/auth/RqAuth.java b/src/main/java/org/takes/facets/auth/RqAuth.java
index 3ef192008..ae9933623 100644
--- a/src/main/java/org/takes/facets/auth/RqAuth.java
+++ b/src/main/java/org/takes/facets/auth/RqAuth.java
@@ -76,7 +76,7 @@ public Identity identity() throws IOException {
         final Identity user;
         if (headers.hasNext()) {
             user = new CcPlain().decode(
-                new Utf8String(headers.next()).bytes()
+                new Utf8String(headers.next()).asBytes()
             );
         } else {
             user = Identity.ANONYMOUS;
diff --git a/src/main/java/org/takes/facets/auth/RqWithAuth.java b/src/main/java/org/takes/facets/auth/RqWithAuth.java
index c66debbb1..3d66feb1f 100644
--- a/src/main/java/org/takes/facets/auth/RqWithAuth.java
+++ b/src/main/java/org/takes/facets/auth/RqWithAuth.java
@@ -110,7 +110,7 @@ private static Request make(final Identity identity, final String header,
         return new RqWithHeader(
             req,
             header,
-            new Utf8String(new CcPlain().encode(identity)).string()
+            new Utf8String(new CcPlain().encode(identity)).asString()
         );
     }
 
diff --git a/src/main/java/org/takes/facets/auth/codecs/CcAes.java b/src/main/java/org/takes/facets/auth/codecs/CcAes.java
index d0ffe6c28..3b05c1afd 100644
--- a/src/main/java/org/takes/facets/auth/codecs/CcAes.java
+++ b/src/main/java/org/takes/facets/auth/codecs/CcAes.java
@@ -132,7 +132,7 @@ public Identity decode(final byte[] bytes) throws IOException {
     }
 
     /**
-     * Encrypt the given bytes using AES.
+     * Encrypt the given asBytes using AES.
      *
      * @param bytes Bytes to encrypt
      * @return Encrypted byte using AES algorithm
@@ -171,7 +171,7 @@ private static byte[] withCorrectBlockSize(final byte[] key) {
         if (key.length != CcAes.BLOCK) {
             throw new IllegalArgumentException(
                 String.format(
-                    "the length of the AES key must be exactly %d bytes",
+                    "the length of the AES key must be exactly %d asBytes",
                     CcAes.BLOCK
                 )
             );
@@ -180,10 +180,10 @@ private static byte[] withCorrectBlockSize(final byte[] key) {
     }
 
     /**
-     * Decrypt the given bytes using AES.
+     * Decrypt the given asBytes using AES.
      *
      * @param bytes Bytes to decrypt
-     * @return Decrypted bytes
+     * @return Decrypted asBytes
      * @throws IOException for all unexpected exceptions
      */
     private byte[] decrypt(final byte[] bytes) throws IOException {
diff --git a/src/main/java/org/takes/facets/auth/codecs/CcPlain.java b/src/main/java/org/takes/facets/auth/codecs/CcPlain.java
index 4fefe11b0..01a8016ca 100644
--- a/src/main/java/org/takes/facets/auth/codecs/CcPlain.java
+++ b/src/main/java/org/takes/facets/auth/codecs/CcPlain.java
@@ -57,12 +57,12 @@ public byte[] encode(final Identity identity) throws IOException {
                 .append('=')
                 .append(URLEncoder.encode(ent.getValue(), encoding));
         }
-        return new Utf8String(text.toString()).bytes();
+        return new Utf8String(text.toString()).asBytes();
     }
 
     @Override
     public Identity decode(final byte[] bytes) throws IOException {
-        final String[] parts = new Utf8String(bytes).string().split(";");
+        final String[] parts = new Utf8String(bytes).asString().split(";");
         final Map<String, String> map = new HashMap<>(parts.length);
         for (int idx = 1; idx < parts.length; ++idx) {
             final String[] pair = parts[idx].split("=");
diff --git a/src/main/java/org/takes/facets/auth/codecs/CcSalted.java b/src/main/java/org/takes/facets/auth/codecs/CcSalted.java
index da899e4c1..8d4fa0ea9 100644
--- a/src/main/java/org/takes/facets/auth/codecs/CcSalted.java
+++ b/src/main/java/org/takes/facets/auth/codecs/CcSalted.java
@@ -69,9 +69,9 @@ public Identity decode(final byte[] bytes) throws IOException {
     }
 
     /**
-     * Salt the string.
+     * Salt the asString.
      * @param text Original text to salt
-     * @return Salted string
+     * @return Salted asString
      */
     @SuppressWarnings("PMD.AvoidArrayLoops")
     private static byte[] salt(final byte[] text) {
@@ -89,7 +89,7 @@ private static byte[] salt(final byte[] text) {
     }
 
     /**
-     * Un-salt the string.
+     * Un-salt the asString.
      * @param text Salted text
      * @return Original text
      */
diff --git a/src/main/java/org/takes/facets/auth/codecs/CcXor.java b/src/main/java/org/takes/facets/auth/codecs/CcXor.java
index e27421778..1ff506142 100644
--- a/src/main/java/org/takes/facets/auth/codecs/CcXor.java
+++ b/src/main/java/org/takes/facets/auth/codecs/CcXor.java
@@ -55,7 +55,7 @@ public final class CcXor implements Codec {
      * @param key Secret key for encoding
      */
     public CcXor(final Codec codec, final String key) {
-        this(codec, new Utf8String(key).bytes());
+        this(codec, new Utf8String(key).asBytes());
     }
 
     /**
@@ -79,7 +79,7 @@ public Identity decode(final byte[] bytes) throws IOException {
     }
 
     /**
-     * XOR array of bytes.
+     * XOR array of asBytes.
      * @param input The input to XOR
      * @return Encrypted output
      */
diff --git a/src/main/java/org/takes/facets/auth/codecs/Codec.java b/src/main/java/org/takes/facets/auth/codecs/Codec.java
index cecf7b7e9..5a6e47ef5 100644
--- a/src/main/java/org/takes/facets/auth/codecs/Codec.java
+++ b/src/main/java/org/takes/facets/auth/codecs/Codec.java
@@ -36,7 +36,7 @@
 public interface Codec {
 
     /**
-     * Encode identity into bytes.
+     * Encode identity into asBytes.
      * @param identity The identity
      * @return Text
      * @throws IOException If fails
diff --git a/src/main/java/org/takes/facets/auth/signatures/SiHmac.java b/src/main/java/org/takes/facets/auth/signatures/SiHmac.java
index 7e15ab273..be8e59bde 100644
--- a/src/main/java/org/takes/facets/auth/signatures/SiHmac.java
+++ b/src/main/java/org/takes/facets/auth/signatures/SiHmac.java
@@ -134,11 +134,11 @@ private static int bitLength(final int bits) {
     }
 
     /**
-     * Encrypt the given bytes using HMAC.
+     * Encrypt the given asBytes using HMAC.
      *
      * @param bytes
      *  Bytes to encrypt
-     * @return Encrypted bytes
+     * @return Encrypted asBytes
      * @throws IOException
      *  for all unexpected exceptions
      */
diff --git a/src/main/java/org/takes/facets/auth/signatures/Signature.java b/src/main/java/org/takes/facets/auth/signatures/Signature.java
index 74daea2cd..a992cb080 100644
--- a/src/main/java/org/takes/facets/auth/signatures/Signature.java
+++ b/src/main/java/org/takes/facets/auth/signatures/Signature.java
@@ -35,7 +35,7 @@
 public interface Signature {
 
     /**
-     * Create signature for data bytes.
+     * Create signature for data asBytes.
      * @param data The data to be signed
      * @return Signature
      * @throws IOException If anything fails
diff --git a/src/main/java/org/takes/facets/auth/social/PsTwitter.java b/src/main/java/org/takes/facets/auth/social/PsTwitter.java
index 1bc5f251c..039adb60b 100644
--- a/src/main/java/org/takes/facets/auth/social/PsTwitter.java
+++ b/src/main/java/org/takes/facets/auth/social/PsTwitter.java
@@ -194,7 +194,7 @@ private String fetch() throws IOException {
                     "Basic %s", DatatypeConverter.printBase64Binary(
                         new Utf8String(
                             String.format("%s:%s", this.app, this.key)
-                        ).bytes()
+                        ).asBytes()
                     )
                 )
             )
diff --git a/src/main/java/org/takes/facets/cookies/RsWithCookie.java b/src/main/java/org/takes/facets/cookies/RsWithCookie.java
index f7722c214..19acda986 100644
--- a/src/main/java/org/takes/facets/cookies/RsWithCookie.java
+++ b/src/main/java/org/takes/facets/cookies/RsWithCookie.java
@@ -115,7 +115,7 @@ public RsWithCookie(final Response res, final CharSequence name,
     }
 
     /**
-     * Build cookie string.
+     * Build cookie asString.
      * @param name Cookie name
      * @param value Value of it
      * @param attrs Optional attributes, for example "Path=/"
diff --git a/src/main/java/org/takes/facets/flash/RsFlash.java b/src/main/java/org/takes/facets/flash/RsFlash.java
index 24de70aaa..5d4d023ff 100644
--- a/src/main/java/org/takes/facets/flash/RsFlash.java
+++ b/src/main/java/org/takes/facets/flash/RsFlash.java
@@ -106,7 +106,7 @@ public final class RsFlash extends RsWrap {
     private static final String TEXT_FORMAT = "%s/%s";
 
     /**
-     * To string.
+     * To asString.
      */
     private final CharSequence text;
 
diff --git a/src/main/java/org/takes/facets/fork/FkEncoding.java b/src/main/java/org/takes/facets/fork/FkEncoding.java
index e782c28a8..bf1509fb8 100644
--- a/src/main/java/org/takes/facets/fork/FkEncoding.java
+++ b/src/main/java/org/takes/facets/fork/FkEncoding.java
@@ -48,7 +48,7 @@
  *   new FkEncoding("", response)
  * )</pre>
  *
- * <p>Empty string as an encoding means that the fork should match
+ * <p>Empty asString as an encoding means that the fork should match
  * in any case.
  *
  * <p>The class is immutable and thread-safe.
@@ -64,7 +64,7 @@ public final class FkEncoding implements Fork {
     private static final Pattern ENCODING_SEP = Pattern.compile("\\s*,\\s*");
 
     /**
-     * Encoding we can deliver (or empty string).
+     * Encoding we can deliver (or empty asString).
      */
     private final String encoding;
 
diff --git a/src/main/java/org/takes/facets/fork/RqRegex.java b/src/main/java/org/takes/facets/fork/RqRegex.java
index a9f189677..11396e84e 100644
--- a/src/main/java/org/takes/facets/fork/RqRegex.java
+++ b/src/main/java/org/takes/facets/fork/RqRegex.java
@@ -41,7 +41,7 @@
 public interface RqRegex extends Request {
 
     /**
-     * Get matcher of query string.
+     * Get matcher of query asString.
      * @return Matcher
      */
     Matcher matcher();
diff --git a/src/main/java/org/takes/facets/hamcrest/HmBody.java b/src/main/java/org/takes/facets/hamcrest/HmBody.java
index 99d1601cd..abfa50d80 100644
--- a/src/main/java/org/takes/facets/hamcrest/HmBody.java
+++ b/src/main/java/org/takes/facets/hamcrest/HmBody.java
@@ -147,7 +147,7 @@ private static InputStream itemBody(final Body item) throws IOException {
     }
 
     /**
-     * InputStream as bytes.
+     * InputStream as asBytes.
      * @param input Input
      * @return Bytes
      * @throws IOException If some problem inside
diff --git a/src/main/java/org/takes/facets/hamcrest/HmHeader.java b/src/main/java/org/takes/facets/hamcrest/HmHeader.java
index a50acb1aa..69c31f1aa 100644
--- a/src/main/java/org/takes/facets/hamcrest/HmHeader.java
+++ b/src/main/java/org/takes/facets/hamcrest/HmHeader.java
@@ -46,7 +46,7 @@
 public final class HmHeader<T extends Head> extends TypeSafeMatcher<T> {
 
     /**
-     * Values string used in description of mismatches.
+     * Values asString used in description of mismatches.
      */
     private static final String VALUES_STR = " -> values: ";
 
diff --git a/src/main/java/org/takes/http/MainRemote.java b/src/main/java/org/takes/http/MainRemote.java
index 90aebe55a..6faab7d9c 100644
--- a/src/main/java/org/takes/http/MainRemote.java
+++ b/src/main/java/org/takes/http/MainRemote.java
@@ -155,7 +155,7 @@ private static int port(final File file) throws Exception {
                     break;
                 }
             }
-            port = Integer.parseInt(new Utf8String(buf).string().trim());
+            port = Integer.parseInt(new Utf8String(buf).asString().trim());
         }
         return port;
     }
diff --git a/src/main/java/org/takes/misc/EnglishLowerCase.java b/src/main/java/org/takes/misc/EnglishLowerCase.java
index e332ceeb9..c133efbf0 100644
--- a/src/main/java/org/takes/misc/EnglishLowerCase.java
+++ b/src/main/java/org/takes/misc/EnglishLowerCase.java
@@ -26,7 +26,7 @@
 import java.util.Locale;
 
 /**
- * English lower case string representation.
+ * English lower case asString representation.
  * @since 0.33
  */
 public final class EnglishLowerCase {
@@ -53,7 +53,7 @@ public EnglishLowerCase(final String string) {
     }
 
     /**
-     * Returns string value.
+     * Returns asString value.
      * @return String value
      */
     public String string() {
diff --git a/src/main/java/org/takes/misc/Utf8String.java b/src/main/java/org/takes/misc/Utf8String.java
index 48c1f4fdb..936a1bf5b 100644
--- a/src/main/java/org/takes/misc/Utf8String.java
+++ b/src/main/java/org/takes/misc/Utf8String.java
@@ -24,17 +24,14 @@
 package org.takes.misc;
 
 import java.nio.charset.Charset;
+import org.cactoos.Bytes;
+import org.cactoos.Text;
 
 /**
  * String that uses UTF-8 encoding for all byte operations.
  * @since 0.33
- * @todo #804:30min Make this implements Cactoos Bytes and Text
- *  and make the places in Takes that use it be able to directly
- *  take either a Bytes or a Text depending on the situation.
- *  For example RsWithBody should take Bytes and Text in its constructors.
- *  Also reimplement this class with BytesOf.
  */
-public final class Utf8String {
+public final class Utf8String implements Bytes, Text {
 
     /**
      * UTF-8 encoding.
@@ -56,25 +53,19 @@ public Utf8String(final String string) {
 
     /**
      * Ctor.
-     * @param bytes Bytes to construct UTF-8 string value
+     * @param bytes Bytes to construct UTF-8 asString value
      */
     public Utf8String(final byte... bytes) {
         this(new String(bytes, Charset.forName(Utf8String.ENCODING)));
     }
 
-    /**
-     * Encodes string value into a sequence of bytes using UTF-8 charset.
-     * @return Sequence of bytes
-     */
-    public byte[] bytes() {
+    @Override
+    public byte[] asBytes() {
         return this.value.getBytes(Charset.forName(Utf8String.ENCODING));
     }
 
-    /**
-     * Returns string value.
-     * @return String value
-     */
-    public String string() {
+    @Override
+    public String asString() {
         return this.value;
     }
 }
diff --git a/src/main/java/org/takes/rq/CapInputStream.java b/src/main/java/org/takes/rq/CapInputStream.java
index 445e147c2..4328dd506 100644
--- a/src/main/java/org/takes/rq/CapInputStream.java
+++ b/src/main/java/org/takes/rq/CapInputStream.java
@@ -41,7 +41,7 @@ final class CapInputStream extends InputStream {
     private final InputStream origin;
 
     /**
-     * More bytes to read.
+     * More asBytes to read.
      */
     private long more;
 
diff --git a/src/main/java/org/takes/rq/ChunkedInputStream.java b/src/main/java/org/takes/rq/ChunkedInputStream.java
index 290a79c60..fab5bd26a 100644
--- a/src/main/java/org/takes/rq/ChunkedInputStream.java
+++ b/src/main/java/org/takes/rq/ChunkedInputStream.java
@@ -199,7 +199,7 @@ private enum State {
          */
         R,
         /**
-         * Inside quoted string.
+         * Inside quoted asString.
          */
         QUOTED_STRING,
         /**
diff --git a/src/main/java/org/takes/rq/RqFake.java b/src/main/java/org/takes/rq/RqFake.java
index 81fcacbbe..8fdd9982f 100644
--- a/src/main/java/org/takes/rq/RqFake.java
+++ b/src/main/java/org/takes/rq/RqFake.java
@@ -89,7 +89,7 @@ public RqFake(final CharSequence method, final CharSequence query,
      * @param body Body
      */
     public RqFake(final List<String> head, final CharSequence body) {
-        this(head, new Utf8String(body.toString()).bytes());
+        this(head, new Utf8String(body.toString()).asBytes());
     }
 
     /**
diff --git a/src/main/java/org/takes/rq/RqLengthAware.java b/src/main/java/org/takes/rq/RqLengthAware.java
index c4af4df12..18d45b5c0 100644
--- a/src/main/java/org/takes/rq/RqLengthAware.java
+++ b/src/main/java/org/takes/rq/RqLengthAware.java
@@ -39,7 +39,7 @@
  * most cases, the browser will not close the request and will always
  * return positive number in available() method. Thus, you won't be
  * able to reach the end of the stream ever. The browser wants you
- * to respect the "Content-Length" header and read as many bytes
+ * to respect the "Content-Length" header and read as many asBytes
  * as it requests. To solve that, just wrap your request into this
  * decorator.
  *
diff --git a/src/main/java/org/takes/rq/RqLive.java b/src/main/java/org/takes/rq/RqLive.java
index f4873d8fc..12580b408 100644
--- a/src/main/java/org/takes/rq/RqLive.java
+++ b/src/main/java/org/takes/rq/RqLive.java
@@ -120,7 +120,7 @@ private static void checkLineFeed(final InputStream input,
                 String.format(
                     "there is no LF after CR in header, line #%d: \"%s\"",
                     position,
-                    new Utf8String(baos.toByteArray()).string()
+                    new Utf8String(baos.toByteArray()).asString()
                 )
             );
         }
@@ -137,7 +137,7 @@ private static Opt<String> newHeader(final Opt<Integer> data,
         Opt<String> header = new Opt.Empty<>();
         if (data.get() != ' ' && data.get() != '\t') {
             header = new Opt.Single<>(
-                new Utf8String(baos.toByteArray()).string()
+                new Utf8String(baos.toByteArray()).asString()
             );
             baos.reset();
         }
@@ -164,7 +164,7 @@ private static Integer legalCharacter(final Opt<Integer> data,
                     "illegal character 0x%02X in HTTP header line #%d: \"%s\"",
                     data.get(),
                     position,
-                    new Utf8String(baos.toByteArray()).string()
+                    new Utf8String(baos.toByteArray()).asString()
                 )
             );
         }
@@ -176,7 +176,7 @@ private static Integer legalCharacter(final Opt<Integer> data,
      * @param input Stream
      * @param data Empty or current data
      * @param available Indicates whether or not it should check first if there
-     *  are available bytes
+     *  are available asBytes
      * @return Next or current data
      * @throws IOException if input.read() fails
      */
diff --git a/src/main/java/org/takes/rq/RqPrint.java b/src/main/java/org/takes/rq/RqPrint.java
index 0ebb252a0..d6769a71b 100644
--- a/src/main/java/org/takes/rq/RqPrint.java
+++ b/src/main/java/org/takes/rq/RqPrint.java
@@ -59,7 +59,7 @@ public RqPrint(final Request req) {
     public String print() throws IOException {
         final ByteArrayOutputStream baos = new ByteArrayOutputStream();
         this.print(baos);
-        return new Utf8String(baos.toByteArray()).string();
+        return new Utf8String(baos.toByteArray()).asString();
     }
 
     /**
@@ -80,7 +80,7 @@ public void print(final OutputStream output) throws IOException {
     public String printHead() throws IOException {
         final ByteArrayOutputStream baos = new ByteArrayOutputStream();
         this.printHead(baos);
-        return new Utf8String(baos.toByteArray()).string();
+        return new Utf8String(baos.toByteArray()).asString();
     }
 
     /**
@@ -107,7 +107,7 @@ public void printHead(final OutputStream output) throws IOException {
     public String printBody() throws IOException {
         final ByteArrayOutputStream baos = new ByteArrayOutputStream();
         this.printBody(baos);
-        return new Utf8String(baos.toByteArray()).string();
+        return new Utf8String(baos.toByteArray()).asString();
     }
 
     /**
diff --git a/src/main/java/org/takes/rq/RqWithBody.java b/src/main/java/org/takes/rq/RqWithBody.java
index 23699f73b..a4becf037 100644
--- a/src/main/java/org/takes/rq/RqWithBody.java
+++ b/src/main/java/org/takes/rq/RqWithBody.java
@@ -54,7 +54,7 @@ public Iterable<String> head() throws IOException {
             @Override
             public InputStream body() {
                 return new ByteArrayInputStream(
-                    new Utf8String(bdy.toString()).bytes()
+                    new Utf8String(bdy.toString()).asBytes()
                 );
             }
         });
diff --git a/src/main/java/org/takes/rq/multipart/RqMtFake.java b/src/main/java/org/takes/rq/multipart/RqMtFake.java
index decbdb8ef..fb970e1a2 100644
--- a/src/main/java/org/takes/rq/multipart/RqMtFake.java
+++ b/src/main/java/org/takes/rq/multipart/RqMtFake.java
@@ -164,7 +164,7 @@ public Iterable<String> head() throws IOException {
         @Override
         public InputStream body() {
             return new ByteArrayInputStream(
-                new Utf8String(this.parts).bytes()
+                new Utf8String(this.parts).asBytes()
             );
         }
     }
diff --git a/src/main/java/org/takes/rs/RsPrint.java b/src/main/java/org/takes/rs/RsPrint.java
index 45215f47f..dc4ec95e5 100644
--- a/src/main/java/org/takes/rs/RsPrint.java
+++ b/src/main/java/org/takes/rs/RsPrint.java
@@ -79,14 +79,14 @@ public RsPrint(final Response res) {
     }
 
     /**
-     * Print it into string.
+     * Print it into asString.
      * @return Entire HTTP response
      * @throws IOException If fails
      */
     public String print() throws IOException {
         final ByteArrayOutputStream baos = new ByteArrayOutputStream();
         this.print(baos);
-        return new Utf8String(baos.toByteArray()).string();
+        return new Utf8String(baos.toByteArray()).asString();
     }
 
     @Override
@@ -95,18 +95,18 @@ public String asString() throws IOException {
     }
 
     /**
-     * Print body into string.
+     * Print body into asString.
      * @return Entire body of HTTP response
      * @throws IOException If fails
      */
     public String printBody() throws IOException {
         final ByteArrayOutputStream baos = new ByteArrayOutputStream();
         this.printBody(baos);
-        return new Utf8String(baos.toByteArray()).string();
+        return new Utf8String(baos.toByteArray()).asString();
     }
 
     /**
-     * Print head into string.
+     * Print head into asString.
      * @return Entire head of HTTP response
      * @throws IOException If fails
      * @since 0.10
@@ -114,7 +114,7 @@ public String printBody() throws IOException {
     public String printHead() throws IOException {
         final ByteArrayOutputStream baos = new ByteArrayOutputStream();
         this.printHead(baos);
-        return new Utf8String(baos.toByteArray()).string();
+        return new Utf8String(baos.toByteArray()).asString();
     }
 
     /**
diff --git a/src/main/java/org/takes/rs/RsSimple.java b/src/main/java/org/takes/rs/RsSimple.java
index 3588ef57a..3d1ba6026 100644
--- a/src/main/java/org/takes/rs/RsSimple.java
+++ b/src/main/java/org/takes/rs/RsSimple.java
@@ -49,7 +49,7 @@ public class RsSimple extends RsWrap {
     public RsSimple(final Iterable<String> head, final String body) {
         this(
             head,
-            new ByteArrayInputStream(new Utf8String(body).bytes())
+            new ByteArrayInputStream(new Utf8String(body).asBytes())
         );
     }
 
diff --git a/src/main/java/org/takes/rs/RsVelocity.java b/src/main/java/org/takes/rs/RsVelocity.java
index a32b96302..7684a7a62 100644
--- a/src/main/java/org/takes/rs/RsVelocity.java
+++ b/src/main/java/org/takes/rs/RsVelocity.java
@@ -79,7 +79,7 @@ public RsVelocity(final CharSequence template,
         final RsVelocity.Pair... params) {
         this(
             new ByteArrayInputStream(
-                new Utf8String(template.toString()).bytes()
+                new Utf8String(template.toString()).asBytes()
             ), params
         );
     }
diff --git a/src/main/java/org/takes/rs/RsWithBody.java b/src/main/java/org/takes/rs/RsWithBody.java
index 463d8a2f8..06b85eab9 100644
--- a/src/main/java/org/takes/rs/RsWithBody.java
+++ b/src/main/java/org/takes/rs/RsWithBody.java
@@ -90,7 +90,7 @@ public RsWithBody(final URL url) {
      * @param body Body
      */
     public RsWithBody(final Response res, final CharSequence body) {
-        this(res, new Utf8String(body.toString()).bytes());
+        this(res, new Utf8String(body.toString()).asBytes());
     }
 
     /**
diff --git a/src/main/java/org/takes/rs/RsXslt.java b/src/main/java/org/takes/rs/RsXslt.java
index bbac6b0b5..5c8cd1af1 100644
--- a/src/main/java/org/takes/rs/RsXslt.java
+++ b/src/main/java/org/takes/rs/RsXslt.java
@@ -152,14 +152,14 @@ private static InputStream transform(final TransformerFactory factory,
         final Source xsl = RsXslt.stylesheet(
             factory, new StreamSource(
                 new Utf8InputStreamReader(
-                    new ByteArrayInputStream(new Utf8String(input).bytes())
+                    new ByteArrayInputStream(new Utf8String(input).asBytes())
                 )
             )
         );
         RsXslt.transformer(factory, xsl).transform(
             new StreamSource(
                 new Utf8InputStreamReader(
-                    new ByteArrayInputStream(new Utf8String(input).bytes())
+                    new ByteArrayInputStream(new Utf8String(input).asBytes())
                 )
             ),
             new StreamResult(
@@ -167,7 +167,7 @@ factory, new StreamSource(
             )
         );
         return new ByteArrayInputStream(
-            new Utf8String(baos.toByteArray()).bytes()
+            new Utf8String(baos.toByteArray()).asBytes()
         );
     }
 
diff --git a/src/test/java/org/takes/facets/auth/PsBasicTest.java b/src/test/java/org/takes/facets/auth/PsBasicTest.java
index 3400fdddb..9f0ad355d 100644
--- a/src/test/java/org/takes/facets/auth/PsBasicTest.java
+++ b/src/test/java/org/takes/facets/auth/PsBasicTest.java
@@ -288,11 +288,11 @@ private static String urn(final String user) {
     }
 
     /**
-     * Generate the string used on the request that store information about
+     * Generate the asString used on the request that store information about
      * authentication.
      * @param user Username
      * @param pass Password
-     * @return Header string.
+     * @return Header asString.
      */
     private static String header(final String user, final String pass) {
         final String auth = String.format("%s:%s", user, pass);
diff --git a/src/test/java/org/takes/facets/auth/social/PsGithubTest.java b/src/test/java/org/takes/facets/auth/social/PsGithubTest.java
index d072c3f0f..ed7a8112b 100644
--- a/src/test/java/org/takes/facets/auth/social/PsGithubTest.java
+++ b/src/test/java/org/takes/facets/auth/social/PsGithubTest.java
@@ -61,23 +61,23 @@ public final class PsGithubTest {
     private static final String GIT_HUB_TOKEN = "GitHubToken";
 
     /**
-     * XPath access_token string.
+     * XPath access_token asString.
      */
     private static final String ACCESS_TOKEN = "access_token";
 
     /**
-     * XPath login string.
+     * XPath login asString.
      */
     private static final String LOGIN = "login";
 
     /**
-     * Octocat URL string.
+     * Octocat URL asString.
      */
     private static final String OCTOCAT_GIF_URL =
         "https://github.com/img/octocat.gif";
 
     /**
-     * XPath octocat string.
+     * XPath octocat asString.
      */
     private static final String OCTOCAT = "octocat";
 
diff --git a/src/test/java/org/takes/facets/auth/social/PsGoogleTest.java b/src/test/java/org/takes/facets/auth/social/PsGoogleTest.java
index 3882fd157..5201857d3 100644
--- a/src/test/java/org/takes/facets/auth/social/PsGoogleTest.java
+++ b/src/test/java/org/takes/facets/auth/social/PsGoogleTest.java
@@ -111,7 +111,7 @@ public final class PsGoogleTest {
     private static final String AVATAR = "https://google.com/img/avatar.gif";
 
     /**
-     * XPath access_token string.
+     * XPath access_token asString.
      */
     private static final String ACCESS_TOKEN = "access_token";
 
diff --git a/src/test/java/org/takes/facets/fork/RqRegexTest.java b/src/test/java/org/takes/facets/fork/RqRegexTest.java
index baf1974eb..6dbd148cc 100644
--- a/src/test/java/org/takes/facets/fork/RqRegexTest.java
+++ b/src/test/java/org/takes/facets/fork/RqRegexTest.java
@@ -35,7 +35,7 @@
 public final class RqRegexTest {
 
     /**
-     * RqRegex can match a string.
+     * RqRegex can match a asString.
      * @throws IOException If some problem inside
      */
     @Test
diff --git a/src/test/java/org/takes/http/FtBasicTest.java b/src/test/java/org/takes/http/FtBasicTest.java
index 8eb95c5d7..30fb7fd3c 100644
--- a/src/test/java/org/takes/http/FtBasicTest.java
+++ b/src/test/java/org/takes/http/FtBasicTest.java
@@ -225,7 +225,7 @@ public void consumesTwiceInputStreamWithRsText() throws IOException {
                     FtBasicTest.ROOT_PATH,
                     new RsText(
                         new ByteArrayInputStream(
-                            new Utf8String(result).bytes()
+                            new Utf8String(result).asBytes()
                         )
                     )
                 )
@@ -262,7 +262,7 @@ public void consumesTwiceInputStreamWithRsHtml() throws IOException {
                     FtBasicTest.ROOT_PATH,
                     new RsHtml(
                         new ByteArrayInputStream(
-                            new Utf8String(result).bytes()
+                            new Utf8String(result).asBytes()
                         )
                     )
                 )
diff --git a/src/test/java/org/takes/misc/ExpiresTest.java b/src/test/java/org/takes/misc/ExpiresTest.java
index fb042c178..13d0c6f64 100644
--- a/src/test/java/org/takes/misc/ExpiresTest.java
+++ b/src/test/java/org/takes/misc/ExpiresTest.java
@@ -74,7 +74,7 @@ public void returnsHour() {
     }
 
     /**
-     * Date can return expires date string in GMT.
+     * Date can return expires date asString in GMT.
      */
     @Test
     public void returnsExpiresStringInGmt() {
diff --git a/src/test/java/org/takes/misc/Utf8StringTest.java b/src/test/java/org/takes/misc/Utf8StringTest.java
index a2413d8f4..c7caaef3c 100644
--- a/src/test/java/org/takes/misc/Utf8StringTest.java
+++ b/src/test/java/org/takes/misc/Utf8StringTest.java
@@ -40,22 +40,22 @@ public final class Utf8StringTest {
     private static final String ENCODING = "UTF-8";
 
     /**
-     * Utf8String can be constructed from string.
+     * Utf8String can be constructed from asString.
      * @throws UnsupportedEncodingException If fails
      */
     @Test
     public void canConstructFromString() throws UnsupportedEncodingException {
         final String test = "Hello こんにちは Привет";
         final Utf8String str = new Utf8String(test);
-        MatcherAssert.assertThat(str.string(), Matchers.equalTo(test));
+        MatcherAssert.assertThat(str.asString(), Matchers.equalTo(test));
         MatcherAssert.assertThat(
-            str.bytes(),
+            str.asBytes(),
             Matchers.equalTo(test.getBytes(Utf8StringTest.ENCODING))
         );
     }
 
     /**
-     * Utf8String can be constructed from bytes array.
+     * Utf8String can be constructed from asBytes array.
      * @throws UnsupportedEncodingException If fails
      */
     @Test
@@ -65,9 +65,9 @@ public void canBeConstructedFromBytes()
         final Utf8String str = new Utf8String(
             test.getBytes(Utf8StringTest.ENCODING)
         );
-        MatcherAssert.assertThat(str.string(), Matchers.equalTo(test));
+        MatcherAssert.assertThat(str.asString(), Matchers.equalTo(test));
         MatcherAssert.assertThat(
-            str.bytes(),
+            str.asBytes(),
             Matchers.equalTo(test.getBytes(Utf8StringTest.ENCODING))
         );
     }
diff --git a/src/test/java/org/takes/rq/multipart/RqTempTest.java b/src/test/java/org/takes/rq/multipart/RqTempTest.java
index a2823df7f..7566f7671 100644
--- a/src/test/java/org/takes/rq/multipart/RqTempTest.java
+++ b/src/test/java/org/takes/rq/multipart/RqTempTest.java
@@ -50,7 +50,7 @@ public void deletesTempFile() throws IOException {
         );
         Files.write(
             file.toPath(),
-            new Utf8String("Temp file deletion test").bytes()
+            new Utf8String("Temp file deletion test").asBytes()
         );
         final Request request = new RqTemp(file);
         try {
diff --git a/src/test/java/org/takes/rs/BodyTest.java b/src/test/java/org/takes/rs/BodyTest.java
index a9ecd3f1c..4a5a940aa 100644
--- a/src/test/java/org/takes/rs/BodyTest.java
+++ b/src/test/java/org/takes/rs/BodyTest.java
@@ -49,7 +49,7 @@ public final class BodyTest {
     @Test
     public void returnsCorrectInputWithByteArray() throws Exception {
         final byte[] bytes =
-            new Utf8String("ByteArray returnsCorrectInput!").bytes();
+            new Utf8String("ByteArray returnsCorrectInput!").asBytes();
         MatcherAssert.assertThat(
             ByteStreams.toByteArray(new Body.ByteArray(bytes).input()),
             Matchers.equalTo(bytes)
@@ -63,7 +63,7 @@ public void returnsCorrectInputWithByteArray() throws Exception {
     @Test
     public void returnsCorrectLengthWithByteArray() throws Exception {
         final byte[] bytes =
-            new Utf8String("ByteArray returnsCorrectLength!").bytes();
+            new Utf8String("ByteArray returnsCorrectLength!").asBytes();
         MatcherAssert.assertThat(
             new Body.ByteArray(bytes).length(),
             Matchers.equalTo(bytes.length)
@@ -77,7 +77,7 @@ public void returnsCorrectLengthWithByteArray() throws Exception {
     @Test
     public void returnsCorrectInputWithStream() throws Exception {
         final byte[] bytes =
-            new Utf8String("Stream returnsCorrectInput!").bytes();
+            new Utf8String("Stream returnsCorrectInput!").asBytes();
         MatcherAssert.assertThat(
             ByteStreams.toByteArray(
                 new Body.Stream(new ByteArrayInputStream(bytes)).input()
@@ -93,7 +93,7 @@ public void returnsCorrectInputWithStream() throws Exception {
     @Test
     public void returnsCorrectLengthWithStream() throws Exception {
         final byte[] bytes =
-            new Utf8String("Stream returnsCorrectLength!").bytes();
+            new Utf8String("Stream returnsCorrectLength!").asBytes();
         MatcherAssert.assertThat(
             new Body.Stream(new ByteArrayInputStream(bytes)).length(),
             Matchers.equalTo(bytes.length)
@@ -107,7 +107,7 @@ public void returnsCorrectLengthWithStream() throws Exception {
     @Test
     public void returnsCorrectInputWithTemFile() throws Exception {
         final byte[] bytes =
-            new Utf8String("TempFile returnsCorrectInput!").bytes();
+            new Utf8String("TempFile returnsCorrectInput!").asBytes();
         MatcherAssert.assertThat(
             ByteStreams.toByteArray(
                 new Body.TempFile(new Body.ByteArray(bytes)).input()
@@ -123,7 +123,7 @@ public void returnsCorrectInputWithTemFile() throws Exception {
     @Test
     public void returnsCorrectLengthWithTemFile() throws Exception {
         final byte[] bytes =
-            new Utf8String("TempFile returnsCorrectLength!").bytes();
+            new Utf8String("TempFile returnsCorrectLength!").asBytes();
         MatcherAssert.assertThat(
             new Body.TempFile(new Body.ByteArray(bytes)).length(),
             Matchers.equalTo(bytes.length)
@@ -139,7 +139,7 @@ public void returnsCorrectInputWithUrl() throws Exception {
         final Path file = BodyTest.createTempFile();
         try {
             final byte[] bytes =
-                new Utf8String("URL returnsCorrectInput!").bytes();
+                new Utf8String("URL returnsCorrectInput!").asBytes();
             try (InputStream input = new ByteArrayInputStream(bytes)) {
                 Files.copy(input, file, StandardCopyOption.REPLACE_EXISTING);
             }
@@ -164,7 +164,7 @@ public void returnsCorrectLengthWithUrl() throws Exception {
         final Path file = BodyTest.createTempFile();
         try {
             final byte[] bytes =
-                new Utf8String("URL returnsCorrectLength!").bytes();
+                new Utf8String("URL returnsCorrectLength!").asBytes();
             try (InputStream input = new ByteArrayInputStream(bytes)) {
                 Files.copy(input, file, StandardCopyOption.REPLACE_EXISTING);
             }
diff --git a/src/test/java/org/takes/tk/TkProxyTest.java b/src/test/java/org/takes/tk/TkProxyTest.java
index 5fc7cee50..89623f320 100644
--- a/src/test/java/org/takes/tk/TkProxyTest.java
+++ b/src/test/java/org/takes/tk/TkProxyTest.java
@@ -131,7 +131,7 @@ public void exec(final URI home) throws IOException {
     }
 
     /**
-     * TkProxy can correctly maps path string.
+     * TkProxy can correctly maps path asString.
      * @throws Exception If some problem inside
      * @checkstyle AnonInnerLengthCheck (100 lines)
      */
diff --git a/src/test/java/org/takes/tk/TkRedirectTest.java b/src/test/java/org/takes/tk/TkRedirectTest.java
index d259547d7..8296385bc 100644
--- a/src/test/java/org/takes/tk/TkRedirectTest.java
+++ b/src/test/java/org/takes/tk/TkRedirectTest.java
@@ -50,7 +50,7 @@ public final class TkRedirectTest {
     private static final String NEWLINE = "\r\n";
 
     /**
-     * TkRedirect can create a response with url string.
+     * TkRedirect can create a response with url asString.
      * @throws IOException If some problem inside
      */
     @Test
@@ -73,7 +73,7 @@ public void createsRedirectResponseWithUrl() throws IOException {
     }
 
     /**
-     * TkRedirect can create a response with HTTP status code and url string.
+     * TkRedirect can create a response with HTTP status code and url asString.
      * @throws IOException If some problem inside
      */
     @Test