diff --git a/src/modules/pageRender/page.js b/src/modules/pageRender/page.js
index 82f6dd52..56e7eeee 100644
--- a/src/modules/pageRender/page.js
+++ b/src/modules/pageRender/page.js
@@ -314,7 +314,7 @@ export default function(obj) {
                     <input id="download-button" class="mono dontRead" onclick="download(document.getElementById('url-input-area').value)" type="submit" value="" disabled=true aria-label="${loc(obj.lang, 'AccessibilityDownloadButton')}">
                 </div>
                 ${!isFirefox ? `<div id="bottom">
-                <button id="pasteFromClipboard" class="switch" onclick="pasteClipboard()" aria-label="toggle download mode">${emoji("📋", 22)} ${loc(obj.lang, 'PasteFromClipboard')}</button>
+                <button id="pasteFromClipboard" class="switch" onclick="pasteClipboard()" aria-label="${loc(obj.lang, 'PasteFromClipboard')}">${emoji("📋", 22)} ${loc(obj.lang, 'PasteFromClipboard')}</button>
             </div>` : ''}
             </div>
         </div>
diff --git a/src/modules/setup.js b/src/modules/setup.js
index 4aa98a91..d1aa99cc 100644
--- a/src/modules/setup.js
+++ b/src/modules/setup.js
@@ -1,14 +1,37 @@
 import { randomBytes } from "crypto";
 import { existsSync, unlinkSync, appendFileSync } from "fs";
 import { createInterface } from "readline";
-import { Cyan, Bright, Green } from "./sub/consoleText.js";
+import { Cyan, Bright, Green , Red} from "./sub/consoleText.js";
 import { execSync } from "child_process";
 
+let ip = false
 let envPath = './.env';
 let q = `${Cyan('?')} \x1b[1m`;
 let ob = { streamSalt: randomBytes(64).toString('hex') }
 let rl = createInterface({ input: process.stdin, output: process.stdout });
 
+const badInputError = "\nNext time enter valid input, ok?"
+const unknownError = "\nUnknown error. Please report: https://github.com/wukko/cobalt/issues or can try againg."
+
+const validNumericPortRegex = "([1-9][0-9]{0,3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])";
+const validIPAddressRegex = "(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)";
+const validHostnameRegex = "(((?!\-))(xn\-\-)?[a-z0-9\-_]{0,61}[a-z0-9]{1,1}\.)*(xn\-\-)?([a-z0-9\-]{1,61}|[a-z0-9\-]{1,30})\.[a-z]{2,}";
+
+function fullMatchRegexp(s, r) {
+    var sum_length = 0
+    var found = s.match(r)
+
+    if (found !== null) {
+        sum_length += found[0].length
+    }
+
+    if (sum_length == s.length) {
+        return true
+    } else {
+        return false
+    }
+}
+
 let final = () => {
     if (existsSync(envPath)) {
         unlinkSync(envPath)
@@ -22,33 +45,98 @@ let final = () => {
     console.log(`\n\n${Green("All done!\n")}`)
     console.log("You can re-run this script any time to update the configuration.")
     console.log("\nYou're now ready to start the main project.\nHave fun!")
-    rl.close()
 }
 
 console.log(
     `${Cyan("Welcome to cobalt!")}\n${Bright("We'll get you up and running in no time.\nLet's start by creating a ")}${Cyan(".env")}${Bright(" file. You can always change it later.")}`
 )
+
 console.log(
-    Bright("\nWhat's the selfURL we'll be running on? (localhost)")
+    Bright("\nDo you prefer:\n 1) 'http'\n 2) 'https'\n\nFor 'https' on '127.0.0.1', 'localhost', you must turn off 'HTTPS-Only Mode' in your browser.")
 )
 
 rl.question(q, r1 => {
-    if (r1) {
-        ob['selfURL'] = `https://${r1}/`
-    } else {
-        ob['selfURL'] = `http://localhost`
-    }
-    console.log(Bright("\nGreat! Now, what's the port we'll be running on? (9000)"))
-    rl.question(q, r2 => {
-        if (!r1 && !r2) {
-            ob['selfURL'] = `http://localhost:9000/`
-            ob['port'] = 9000
-        } else if (!r1 && r2) {
-            ob['selfURL'] = `http://localhost:${r2}/`
-            ob['port'] = r2
+    if (r1.length == 1){
+        if (r1 == 1) { // HTTP
+            ob['selfURL'] = 'http://'
+        } else if (r1 == 2){ // HTTP(S)
+            ob['selfURL'] = 'https://'
         } else {
-            ob['port'] = r2
+            console.error(Red(badInputError))
+            process.exit(1)
         }
-        final()
+    } else {
+        console.error(Red(badInputError))
+        process.exit(1)
+    }
+    
+    console.log("\nDo you prefer to specify:\n 1) 'IP'\n 2) 'Domain'")
+    rl.question(q, r2 => {
+        console.log(r2)
+        if (r2.length == 1) {
+            if (r2 == 1) { // IP
+                ip = true
+            } else if (r2 == 2) { // Domain
+                ip = false
+            } else {
+                console.error(Red(badInputError))
+                process.exit(1)
+            }
+        } else {
+            console.error(Red(badInputError))
+            process.exit(1)
+        }
+        
+        console.log(Bright("\nOn which domain name or IP address will it run? (For local network usage: '127.0.0.1', 'localhost')"))
+        rl.question(q, r3 => {
+            if (ip) { // IP
+                if (r3 === "127.0.0.1") { // '127.0.0.1'
+                    ob['selfURL'] += "127.0.0.1"
+                } else if (fullMatchRegexp(r3, validIPAddressRegex) && !fullMatchRegexp(r3, validHostnameRegex)) {
+                    console.log(r3)
+                    ob['selfURL'] += `${r3}`
+                } else {
+                    console.error(Red("You entered the wrong IP-address. If you need to use a domain name, select the correct item. In case of an unknown error and/or regexp is wrong, report: https://github.com/wukko/cobalt/issues."))
+                    process.exit(1)
+                }
+            } else if (!ip) { // Domain
+                if (r3 === 'localhost') { // 'localhost' is not the same as '127.0.0.1' is 'local domain'
+                    ob['selfURL'] += "localhost"
+                } else if (!fullMatchRegexp(r3, validIPAddressRegex) && fullMatchRegexp(r3, validHostnameRegex)) {
+                    console.log(r3)
+                    ob['selfURL'] += `${r3}`
+                } else {
+                    console.error(Red("You entered the wrong domain name. If you need to use a domain name, select the correct item. In case of an unknown error and/or regexp is wrong, report: https://github.com/wukko/cobalt/issues."))
+                    process.exit(1)
+                }
+            } else {
+                console.error(Red(unknownError))
+                process.exit(1)
+            }
+            
+            console.log(Bright("\nGreat! Now, what's the port we'll be running on?"))
+            rl.question(q, r4 => {
+                if (!r4.includes(".")){
+                    if (r4.length <= 5) {
+                        if (fullMatchRegexp(r4, validNumericPortRegex) && parseInt(r4, 10) <= 65535 && parseInt(r4, 10) > 0) {
+                            ob['selfURL'] += `:${r4}/`
+                            ob['port'] = `${r4}`
+                            final()
+                            console.log(Bright("\nGreat! You did it! After start you can access and use the application at only this URL:\n"), ob['selfURL'])
+                        } else {
+                            console.error(Red(badInputError))
+                            process.exit(1)
+                        }
+                    } else {
+                        console.error(Red(badInputError))
+                        process.exit(1)
+                    }
+                } else {
+                    console.error(Red(badInputError))
+                    process.exit(1)
+                }
+                rl.close()
+            });
+        });
     });
 })