diff --git a/front/index.html b/front/index.html
index 7aa11e8..e20268c 100644
--- a/front/index.html
+++ b/front/index.html
@@ -15,28 +15,29 @@
             </div>
             <div class="mb-3">
                 <div class="form-check">
-                    <input class="form-check-input" type="radio" name="radio" id="radioBold" checked>
-                    <label class="form-check-label" for="radioBold">Undercase</label>
+                    <input class="form-check-input" type="radio" name="radio" id="radioUppercase" checked>
+                    <label class="form-check-label" for="radioUppercase">Undercase</label>
                 </div>
             </div>
             <div class="mb-3">
                 <div class="form-check">
-                    <input class="form-check-input" type="radio" name="radio" id="radioCursive">
-                    <label class="form-check-label" for="radioCursive">Lowcase</label>
+                    <input class="form-check-input" type="radio" name="radio" id="radioLowcase">
+                    <label class="form-check-label" for="radioLowcase">Lowcase</label>
                 </div>
             </div>
             <div class="mb-3">
                 <div class="form-check">
-                    <input class="form-check-input" type="radio" name="radio" id="radioUnderline">
-                    <label class="form-check-label" for="radioUnderline">Split</label>
-                    <label for="input" class="form-label">Split by</label>
+                    <input class="form-check-input" type="radio" name="radio" id="radioSplit">
+                    <label class="form-check-label" for="radioSplit">Split</label>
                     <input type="text" class="form-control" id="inputSplitBy">
                 </div>
             </div>
             <div class="mb-3">
                 <div class="form-check">
-                    <input class="form-check-input" type="radio" name="radio" id="radioCrossed">
-                    <label class="form-check-label" for="radioCrossed">Перечеркнутый</label>
+                    <input class="form-check-input" type="radio" name="radio" id="radioReplace">
+                    <label class="form-check-label" for="radioReplace">Replace</label>
+                    <input type="text" class="form-control" id="inputReplaceOld" maxlength="1">
+                    <input type="text" class="form-control" id="inputReplaceNew" maxlength="1">
                 </div>
             </div>  
             <button type="submit" class="btn btn-primary">Обработать</button>
diff --git a/front/index.js b/front/index.js
index e6c7431..248e6d3 100644
--- a/front/index.js
+++ b/front/index.js
@@ -15,27 +15,23 @@ document.addEventListener('DOMContentLoaded', function() {
 
 document.getElementsByClassName("needs-validation")[0].addEventListener('submit', function(event) {
     event.preventDefault();
-    if (document.getElementById("radioBold").checked) {
+    if (document.getElementById("radioUppercase").checked) {
         fetch("http://localhost:8080/uppercase?value=" + document.getElementById("input").value)
         .then(resp => {return resp.text()})
         .then(resBody => {document.getElementById("result").innerHTML = resBody})
     }
-    if (document.getElementById("radioCursive").checked) {
-        fetch("http://localhost:8080/lovercase?value=" + document.getElementById("input").value)
+    if (document.getElementById("radioLowcase").checked) {
+        fetch("http://localhost:8080/lowercase?value=" + document.getElementById("input").value)
         .then(resp => {return resp.text()})
         .then(resBody => {document.getElementById("result").innerHTML = resBody})
     }
-    if (document.getElementById("radioUnderline").checked) {
+    if (document.getElementById("radioSplit").checked) {
         fetch("http://localhost:8080/split?value=" + document.getElementById("input").value + "&splitBy=" + document.getElementById("inputSplitBy").value)
         .then(resp => {return resp.text()})
-        .then(resBody => {
-            for (i = 0; i < resBody.length; i++) {
-                document.getElementById("result").innerHTML += resBody[i]
-            }
-        })
+        .then(resBody => {document.getElementById("result").innerHTML = resBody})
     }
-    if (document.getElementById("radioCrossed").checked) {
-        fetch("http://localhost:8080/crossed?value=" + document.getElementById("input").value)
+    if (document.getElementById("radioReplace").checked) {
+        fetch("http://localhost:8080/replace?value=" + document.getElementById("input").value + "&old=" + document.getElementById("inputReplaceOld").value + "&new=" + document.getElementById("inputReplaceNew").value)
         .then(resp => {return resp.text()})
         .then(resBody => {document.getElementById("result").innerHTML = resBody})
     }
diff --git a/src/main/java/com/kalyshev/yan/ReplaceController.java b/src/main/java/com/kalyshev/yan/ReplaceController.java
index 7fd7ca1..2e41bc0 100644
--- a/src/main/java/com/kalyshev/yan/ReplaceController.java
+++ b/src/main/java/com/kalyshev/yan/ReplaceController.java
@@ -8,8 +8,8 @@ import org.springframework.web.bind.annotation.RestController;
 public class ReplaceController {
     @GetMapping("/replace")
     public String replace(@RequestParam(value = "value", defaultValue = "None") String value,
-                          @RequestParam(value = "old", defaultValue = " ") char oldChar,
-                          @RequestParam(value = "new", defaultValue = " ") char newChar) {
+                          @RequestParam(value = "old", defaultValue = "") char oldChar,
+                          @RequestParam(value = "new", defaultValue = "") char newChar) {
         return value.replace(oldChar, newChar);
     }
 }
diff --git a/src/main/java/com/kalyshev/yan/SplitController.java b/src/main/java/com/kalyshev/yan/SplitController.java
index b1a2ba1..4256c4c 100644
--- a/src/main/java/com/kalyshev/yan/SplitController.java
+++ b/src/main/java/com/kalyshev/yan/SplitController.java
@@ -7,8 +7,14 @@ import org.springframework.web.bind.annotation.RestController;
 @RestController
 public class SplitController {
     @GetMapping("/split")
-    public String[] split(@RequestParam(value = "value", defaultValue = "None") String value,
+    public String split(@RequestParam(value = "value", defaultValue = "None") String value,
                         @RequestParam(value = "splitBy", defaultValue = " ") String splitBy) {
-        return value.split(splitBy);
+        String[] temp = value.split(splitBy);
+        String res = "";
+        for (int i = 0; i < temp.length; i++) {
+            res += temp[i];
+            res += "; ";
+        }
+        return res;
     }
 }