diff --git a/base64url.js b/base64url.js
index fb2a67c..8a35147 100644
--- a/base64url.js
+++ b/base64url.js
@@ -1,21 +1,28 @@
+/*jslint browser: true, sloppy: true */
 //adapted from https://tools.ietf.org/html/draft-ietf-jose-json-web-signature-08#appendix-C
 
-function base64urlEncode(s) {
+function base64urlEncode(arg) {
   var s = window.btoa(arg); // Regular base64 encoder
   s = s.split('=')[0]; // Remove any trailing '='s
-  s = s.replace(/+/g,  '-'); // 62nd char of encoding
+  s = s.replace(/\+/g,  '-'); // 62nd char of encoding
   s = s.replace(/\//g, '_'); // 63rd char of encoding
   return s;
 }
 
-function  base64urlDecode(s) {
+function base64urlDecode(s) {
   s = s.replace(/-/g, '+'); // 62nd char of encoding
   s = s.replace(/_/g, '/'); // 63rd char of encoding
   switch (s.length % 4) { // Pad with trailing '='s
-    case 0: break; // No pad chars in this case
-    case 2: s += "=="; break; // Two pad chars
-    case 3: s += "="; break; // One pad char
-    default: throw "Illegal base64url string!";
+  case 0: // No pad chars in this case
+    break;
+  case 2: // Two pad chars
+    s += "==";
+    break;
+  case 3: // One pad char
+    s += "=";
+    break;
+  default:
+    throw "Illegal base64url string!";
   }
   return window.atob(s); // Standard base64 decoder
-}
\ No newline at end of file
+}
diff --git a/js-keygen-ui.js b/js-keygen-ui.js
index 9c651da..3e2a894 100644
--- a/js-keygen-ui.js
+++ b/js-keygen-ui.js
@@ -1,5 +1,8 @@
+/*jslint browser: true, sloppy: true, vars: true, indent: 2*/
+var console, generateKeyPair;
+
 function copy(id) {
-  return function() {
+  return function () {
     var ta = document.querySelector(id);
     ta.focus();
     ta.select();
@@ -7,43 +10,43 @@ function copy(id) {
       var successful = document.execCommand('copy');
       var msg = successful ? 'successful' : 'unsuccessful';
       console.log('Copy key command was ' + msg);
-    } catch(err) {
+    } catch (err) {
       console.log('Oops, unable to copy');
     }
     window.getSelection().removeAllRanges();
     ta.blur();
-  }
+  };
 }
 
 function buildHref(data) {
   return "data:application/octet-stream;charset=utf-8;base64," + window.btoa(data);
 }
 
-document.addEventListener("DOMContentLoaded", function(event) {
-  document.querySelector('#savePrivate').addEventListener('click', function(event) {
+document.addEventListener("DOMContentLoaded", function (event) {
+  document.querySelector('#savePrivate').addEventListener('click', function (event) {
     document.querySelector('a#private').click();
   });
   document.querySelector('#copyPrivate').addEventListener('click', copy('#privateKey'));
-  document.querySelector('#savePublic').addEventListener('click', function(event) {
+  document.querySelector('#savePublic').addEventListener('click', function (event) {
     document.querySelector('a#public').click();
   });
   document.querySelector('#copyPublic').addEventListener('click', copy('#publicKey'));
   
-  document.querySelector('#generate').addEventListener('click', function(event) {
+  document.querySelector('#generate').addEventListener('click', function (event) {
     var name = document.querySelector('#name').value || "name";
     document.querySelector('a#private').setAttribute("download", name + "_rsa");
     document.querySelector('a#public').setAttribute("download", name + "_rsa.pub");
     
     var alg = document.querySelector('#alg').value || "RSASSA-PKCS1-v1_5";
-    var size = parseInt(document.querySelector('#size').value || "2048");
+    var size = parseInt(document.querySelector('#size').value || "2048", 10);
     generateKeyPair(alg, size, name).then(function (keys) {
       document.querySelector('#private').setAttribute("href", buildHref(keys[0]));
       document.querySelector('#public').setAttribute("href", buildHref(keys[1]));
       document.querySelector('#privateKey').textContent = keys[0];
       document.querySelector('#publicKey').textContent = keys[1];
       document.querySelector('#result').style.display = "block";
-    }).catch(function(err){
+    }).catch(function (err) {
       console.error(err);
     });
   });
-});
\ No newline at end of file
+});
diff --git a/js-keygen.js b/js-keygen.js
index 98c9a48..17e442b 100644
--- a/js-keygen.js
+++ b/js-keygen.js
@@ -1,8 +1,11 @@
+/*jslint browser: true, devel: true, sloppy: true, vars: true*/
+/*globals Uint8Array, Promise */
 var extractable = true;
+var encodePrivateKey, encodePublicKey;
 
 function wrap(text, len) {
   var length = len || 72, i, result = "";
-  for(i=0; i < text.length; i += length) {
+  for (i = 0; i < text.length; i += length) {
     result += text.slice(i, i + length) + "\n";
   }
   return result;
@@ -12,39 +15,39 @@ function rsaPrivateKey(key) {
   return "-----BEGIN RSA PRIVATE KEY-----\n" + key + "-----END RSA PRIVATE KEY-----";
 }
 
-function arrayBufferToBase64( buffer ) {
-    var binary = '';
-    var bytes = new Uint8Array( buffer );
-    var len = bytes.byteLength;
-    for (var i = 0; i < len; i++) {
-        binary += String.fromCharCode( bytes[ i ] );
-    }
-    return window.btoa( binary );
+function arrayBufferToBase64(buffer) {
+  var binary = '', i;
+  var bytes = new Uint8Array(buffer);
+  var len = bytes.byteLength;
+  for (i = 0; i < len; i += 1) {
+    binary += String.fromCharCode(bytes[i]);
+  }
+  return window.btoa(binary);
 }
 
 function generateKeyPair(alg, size, name) {
-  return  window.crypto.subtle.generateKey({
-          name: "RSASSA-PKCS1-v1_5",
-          modulusLength: 2048, //can be 1024, 2048, or 4096
-          publicExponent: new Uint8Array([0x01, 0x00, 0x01]),
-          hash: {name: "SHA-1"}, //can be "SHA-1", "SHA-256", "SHA-384", or "SHA-512"
-      },
-      extractable,
-      ["sign", "verify"]
-  ).then(function(key){
+  return window.crypto.subtle.generateKey({
+    name: "RSASSA-PKCS1-v1_5",
+    modulusLength: 2048, //can be 1024, 2048, or 4096
+    publicExponent: new Uint8Array([0x01, 0x00, 0x01]),
+    hash: {name: "SHA-1"} //can be "SHA-1", "SHA-256", "SHA-384", or "SHA-512"
+  },
+    extractable,
+    ["sign", "verify"]
+    ).then(function (key) {
     
-    var private = window.crypto.subtle.exportKey(
+    var privateKey = window.crypto.subtle.exportKey(
         "jwk",
         key.privateKey
-    ).then(encodePrivateKey).then(wrap).then(rsaPrivateKey);
+      ).then(encodePrivateKey).then(wrap).then(rsaPrivateKey);
 
-    var public = window.crypto.subtle.exportKey(
+    var publicKey = window.crypto.subtle.exportKey(
         "jwk",
         key.publicKey
-    ).then(function(jwk){
+      ).then(function (jwk) {
         return encodePublicKey(jwk, name);
-    });
+      });
     
-    return Promise.all([private, public]);
+    return Promise.all([privateKey, publicKey]);
   });
-}
\ No newline at end of file
+}
diff --git a/ssh-util.js b/ssh-util.js
index 7e9b5f3..bf261cb 100644
--- a/ssh-util.js
+++ b/ssh-util.js
@@ -1,3 +1,7 @@
+/*jslint browser: true, devel: true, bitwise: true, sloppy: true, vars: true*/
+
+var base64urlDecode;
+
 function arrayToString(a) {
   return String.fromCharCode.apply(null, a);
 }
@@ -17,14 +21,14 @@ function pemToArray(pem) {
 }
 
 function arrayToPem(a) {
-  return window.btoa(a.map(function (c) { 
+  return window.btoa(a.map(function (c) {
     return String.fromCharCode(c);
   }).join(''));
 }
 
 function arrayToLen(a) {
   var result = 0, i;
-  for(i = 0; i < a.length; i++) {
+  for (i = 0; i < a.length; i += 1) {
     result = result * 256 + a[i];
   }
   return result;
@@ -32,7 +36,7 @@ function arrayToLen(a) {
 
 function integerToOctet(n) {
   var result = [];
-  for(;n > 0; n = n >> 8 ) {
+  for (true; n > 0; n = n >> 8) {
     result.push(n & 0xFF);
   }
   return result.reverse();
@@ -40,7 +44,7 @@ function integerToOctet(n) {
 
 function lenToArray(n) {
   var oct = integerToOctet(n), i;
-  for(i = oct.length; i < 4; i++) {
+  for (i = oct.length; i < 4; i += 1) {
     oct.unshift(0);
   }
   return oct;
@@ -49,13 +53,13 @@ function lenToArray(n) {
 function decodePublicKey(s) {
   var split = s.split(" ");
   var prefix = split[0];
-  if(prefix != "ssh-rsa") {
+  if (prefix !== "ssh-rsa") {
     throw ("Unknown prefix:" + prefix);
   }
   var buffer = pemToArray(split[1]);
   var nameLen = arrayToLen(buffer.splice(0, 4));
   var type = arrayToString(buffer.splice(0, nameLen));
-  if(type != "ssh-rsa") {
+  if (type !== "ssh-rsa") {
     throw ("Unknown key type:" + type);
   }
   var exponentLen = arrayToLen(buffer.splice(0, 4));
@@ -65,22 +69,22 @@ function decodePublicKey(s) {
   return {type: type, exponent: exponent, key: key, name: split[2]};
 }
 
+function checkHighestBit(v) {
+  if (v[0] >> 7 === 1) { // add leading zero if first bit is set
+    v.unshift(0);
+  }
+  return v;
+}
+
 function jwkToInternal(jwk) {
   return {
     type: "ssh-rsa",
     exponent: checkHighestBit(stringToArray(base64urlDecode(jwk.e))),
-    name: "name", 
+    name: "name",
     key: checkHighestBit(stringToArray(base64urlDecode(jwk.n)))
   };
 }
 
-function checkHighestBit(v) {
-  if(v[0] >> 7 === 1) { // add leading zero if first bit is set
-    v.unshift(0);
-  }
-  return v;
-}
-
 function encodePublicKey(jwk, name) {
   var k = jwkToInternal(jwk);
   k.name = name;
@@ -94,7 +98,7 @@ function encodePublicKey(jwk, name) {
 
 function asnEncodeLen(n) {
   var result = [];
-  if(n >> 7) {
+  if (n >> 7) {
     result = integerToOctet(n);
     result.unshift(0x80 + result.length);
   } else {
@@ -113,6 +117,6 @@ function encodePrivateKey(jwk) {
   var seq = [0x02, 0x01, 0x00]; // extra seq for SSH
   seq = seq.concat.apply(seq, list);
   var len = asnEncodeLen(seq.length);
-  var a = [0x30].concat(len , seq); // seq is 0x30
+  var a = [0x30].concat(len, seq); // seq is 0x30
   return arrayToPem(a);
-}
\ No newline at end of file
+}