diff --git a/download.html b/download.html
index eed5355..2f7ed8c 100644
--- a/download.html
+++ b/download.html
@@ -4,7 +4,7 @@
 	<title>Send to Kobo/Kindle</title>
 	<meta charset="utf-8"/>
 	<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
-	<link rel="stylesheet" type="text/css" href="/style.css"/>
+	<link rel="stylesheet" type="text/css" href="/style.css?l"/>
 </head>
 <body>
 
@@ -12,25 +12,40 @@
 	<h1 class="center">Send to Kobo/Kindle</h1>
 
 	<div class="center">
-		<div style="font-size: 1.4em;">Unique key:</div>
-		<div id="key">––––</div>
+		<div style="font-size: 1.3em;">Unique key:</div>
+		<div id="key">
+			<span id="keyoutput">––––</span>
+			<button id="keygen" title="Generate new key">
+				<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">
+					<path d="M19.146 4.854l-1.489 1.489A8 8 0 1 0 12 20a8.094 8.094 0 0 0 7.371-4.886 1 1 0 1 0-1.842-.779A6.071 6.071 0 0 1 12 18a6 6 0 1 1 4.243-10.243l-1.39 1.39a.5.5 0 0 0 .354.854H19.5A.5.5 0 0 0 20 9.5V5.207a.5.5 0 0 0-.854-.353z"/>
+				</svg>
+			</button>
+		</div>
+		<br/>
+	</div>
+
+	<div class="center" id="downloads">
+		<div style="font-size: 1.3em;"><em>Downloads</em></div>
+		<br/>
+		<div><a id="downloadlink"></a></div>
 		<br/>
-		<button id="keygen">Generate new key</button>
 	</div>
-	<br/>
 	<hr/>
 	<br/>
-	<div class="center" id="downloads">
-		<a id="downloadlink"></a>
+	<div class="center">
+		Visit this on other devices to send ebooks to this ereader:<br/><a id="siteurl">https://send.djazz.se</a><br/>
+		<br/>
+		Created by djazz. Source code on <a href="https://github.com/daniel-j/send2ereader" target="_blank">Github</a><br/>
 	</div>
 </div>
 
 <script type="text/javascript">
 
-var keyOutput = document.getElementById('key')
+var keyOutput = document.getElementById('keyoutput')
 var keyGenBtn = document.getElementById('keygen')
 var downloads = document.getElementById('downloads')
 var downloadlink = document.getElementById('downloadlink')
+var siteurl = document.getElementById('siteurl')
 var key = null
 var pollTimer = null
 
@@ -97,6 +112,10 @@ window.onload = function () {
 	generateKey()
 }
 
+siteurl.textContent = window.location.origin
+siteurl.href = siteurl.textContent
+siteurl.target = '_self'
+
 </script>
 </body>
 </html>
diff --git a/index.js b/index.js
index 0671bc6..92f7387 100644
--- a/index.js
+++ b/index.js
@@ -97,7 +97,7 @@ const upload = multer({
       cb(null, false)
       return
     }
-    if (!allowedTypes.includes(file.mimetype) || !allowedExtensions.includes(extname(file.originalname.toLowerCase()).substr(1))) {
+    if (!allowedTypes.includes(file.mimetype) || !allowedExtensions.includes(extname(file.originalname.toLowerCase()).substring(1))) {
       console.error('FileFilter: File is of an invalid type ', file)
       cb(null, false)
       return
@@ -198,7 +198,7 @@ router.post('/upload', upload.single('file'), async ctx => {
 
   const type = await FileType.fromFile(ctx.request.file.path)
 
-  if (!type || !allowedTypes.includes(type.mime)) {
+  if ((!type || !allowedTypes.includes(type.mime)) && !allowedTypes.includes(mimetype)) {
     flash(ctx, {
       message: 'Uploaded file is of an invalid type: ' + ctx.request.file.originalname + ' (' + (type? type.mime : 'unknown mimetype') + ')',
       success: false,
diff --git a/style.css b/style.css
index b582758..30779fd 100644
--- a/style.css
+++ b/style.css
@@ -14,14 +14,15 @@ h1 {
     font-weight: normal;
     font-style: italic;
 }
-#key {
+#keyoutput {
     font-size: 5em;
-    display: block;
+    display: inline-block;
     letter-spacing: 0.2em;
     margin: 10px 0;
-    font-family: sans-serif;
+    font-family: monospace, sans-serif;
     white-space: nowrap;
     text-transform: uppercase;
+    vertical-align: middle;
 }
 .center {
     text-align: center;
@@ -39,11 +40,23 @@ h1 {
     display: inline-block;
     font-family: inherit;
     font-size: 1.2em;
+    margin: 0 0.5em;
+    vertical-align: middle;
+}
+#keygen {
+    margin-left: 1em;
+    margin-right: -4.7em;
+    padding: 1em;
 }
 #keygen:focus {
     background: black;
     color: white;
 }
+#keygen svg {
+    display: block;
+    width: 1.5em;
+    height: 1.5em;
+}
 #downloads {
     display: none;
 }
diff --git a/upload.html b/upload.html
index a047c70..2d1699b 100644
--- a/upload.html
+++ b/upload.html
@@ -14,7 +14,7 @@
 	<form action="/upload" method="post" enctype="multipart/form-data">
 		<table style="margin: 0 auto;" cellpadding=0 cellspacing=0>
 			<tr><td class="right"><label for="keyinput">Unique key</label></td><td><input type="text" name="key" id="keyinput" autocomplete="off" pattern="...." placeholder="––––" required style="text-transform: uppercase;" maxlength=4/></td></tr>
-			<tr><td class="right"><label for="fileinput">EPUB/MOBI file</label></td><td><input type="file" name="file" id="fileinput" accept=".epub,.mobi,.pdf,.cbz,.cbr,application/epub+zip,application/x-mobipocket-ebook,application/pdf,application/vnd.comicbook+zip,application/vnd.comicbook-rar" required /></td></tr>
+			<tr><td class="right"><label for="fileinput">EPUB/MOBI file</label></td><td><input type="file" name="file" id="fileinput" accept=".txt,.epub,.mobi,.pdf,.cbz,.cbr,application/epub+zip,application/x-mobipocket-ebook,application/pdf,application/vnd.comicbook+zip,application/vnd.comicbook-rar" required /></td></tr>
 			<tr><td></td><td id="fileinfo"></td></tr>
 			<tr><td class="right"><label for="kepubify">Kepubify</label></td><td><input type="checkbox" name="kepubify" id="kepubify" checked /></td></tr>
 			<tr><td></td><td><input type="submit" value="Upload and send" /></td></tr>
@@ -33,30 +33,36 @@
 		Source code on <a href="https://github.com/daniel-j/send2ereader" target="_blank">Github</a> - <a id="siteurl">https://send.djazz.se</span>
 	</div>
 </div>
+
 <script>
 function getCookies() {
-  var cookieRegex = /([\w\.]+)\s*=\s*(?:"((?:\\"|[^"])*)"|(.*?))\s*(?:[;,]|$)/g
-  var cookies = {}
-  var match
-  while( (match = cookieRegex.exec(document.cookie)) !== null ) {
-    var value = match[2] || match[3]
-	cookies[match[1]] = decodeURIComponent(value)
-	try {
-		cookies[match[1]] = JSON.parse(cookies[match[1]])
-	} catch (err) {}
-  }
-  return cookies
+	var cookieRegex = /([\w\.]+)\s*=\s*(?:"((?:\\"|[^"])*)"|(.*?))\s*(?:[;,]|$)/g
+	var cookies = {}
+	var match
+	while( (match = cookieRegex.exec(document.cookie)) !== null ) {
+		var value = match[2] || match[3]
+		cookies[match[1]] = decodeURIComponent(value)
+		try {
+			cookies[match[1]] = JSON.parse(cookies[match[1]])
+		} catch (err) {}
+	}
+	return cookies
 }
 function deleteCookie(name) {
 	document.cookie = name + "= ; expires = Thu, 01 Jan 1970 00:00:00 GMT"
 }
 
+
 var uploadstatus = document.getElementById('uploadstatus')
 var keyinput = document.getElementById('keyinput')
 var fileinput = document.getElementById('fileinput')
+var fileinputAccept = fileinput.accept.split(',') // cache it
 var fileinfo = document.getElementById('fileinfo')
 var siteurl = document.getElementById('siteurl')
 
+
+var isIOS = /iPad|iPhone|iPod/.test(navigator.platform) || (navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1)
+
 var flash = getCookies().flash
 deleteCookie('flash')
 
@@ -80,20 +86,53 @@ uploadstatus.addEventListener('click', function () {
 		uploadstatus.className = ''
 	}, 500)
 }, false)
+
 function fileinputChange () {
-	if (!fileinput.files[0]) {
+	if (!fileinput.files[0] || fileinput.files.length === 0) {
 		fileinfo.textContent = ''
+		fileinput.value = ''
 		return
 	}
+
+	if (fileinput.accept == '') {
+		var filename = fileinput.files[0].name
+		var type = fileinput.files[0].type
+		var found = false
+		for (var i = 0; i < fileinputAccept.length; i++) {
+			var item = fileinputAccept[i]
+			if (item.length > 1 && item[0] == '.') {
+				if (filename.toLowerCase().endsWith(item.toLowerCase())) {
+					found = true
+					break
+				}
+			} else if (type == item) {
+				found = true
+				break
+			}
+		}
+		if (!found) {
+			fileinfo.textContent = ''
+			fileinput.value = ''
+			alert("Invalid file: " + filename)
+			return
+		}
+	}
+
 	fileinfo.textContent = Math.ceil(fileinput.files[0].size / 1024) + ' kB'
 }
 fileinput.addEventListener('change', fileinputChange, false)
 fileinputChange()
 
-siteurl.textContent = window.location.href
+if (isIOS) {
+	// Can't accept .mobi files otherwise (iOS thinks it's an unknown type)
+	fileinput.accept = ''
+}
+
+siteurl.textContent = window.location.origin
 siteurl.href = siteurl.textContent
 siteurl.target = '_self'
 
+
 </script>
 </body>
 </html>
