diff --git a/HACKING.md b/HACKING.md
index 64e1903b..2ea4bfcf 100644
--- a/HACKING.md
+++ b/HACKING.md
@@ -1,7 +1,7 @@
 Hacking
 =======
 
-Execute `./build.py` to effectively concatenate `main.js` with all the files in `code/`. It generates the user script which may be installed into your browser. Do not modify `ttic-debug.user.js` manually, because it is automatically generated. Instead, modify the files in `code/` and have that file built for you. The files in `dist/` are for release only and should not be touched by you.
+Execute `./build.py` to effectively concatenate `main.js` with all the files in `code/`. It generates the user script which may be installed into your browser. Do not modify `iitc-debug.user.js` manually, because it is automatically generated. Instead, modify the files in `code/` and have that file built for you. The files in `dist/` are for release only and should not be touched by you.
 
 `style.css` contains most styles required for the user-script. The extra ones can be found in `code/boot.js#window.setupStyles`. Only CSS rules that depend on config variables should be defined there.
 
@@ -23,7 +23,7 @@ My dev setup is like this:
 Code Style
 ----------
 
-Please follow the these guidelines. Some are just preference, others are good pratice.
+Please follow the these guidelines. Some are just preference, others are good practice.
 - use identity operators: `===` and `!==`. [Why do I want this?](http://stackoverflow.com/a/359509/1684530)
 - jQuery is your friend
 - indent using two spaces
diff --git a/code/boot.js b/code/boot.js
index f359934b..c009dcc0 100644
--- a/code/boot.js
+++ b/code/boot.js
@@ -251,7 +251,7 @@ window.setupMap = function() {
 
   map.on('moveend', function(e) {
     // two limits on map position
-    // we wrap longitude (the L.LatLng 'wrap' method) - so we don't find outselves looking beyond +-180 degrees
+    // we wrap longitude (the L.LatLng 'wrap' method) - so we don't find ourselves looking beyond +-180 degrees
     // then latitude is clamped with the clampLatLng function (to the 85 deg north/south limits)
     var newPos = clampLatLng(map.getCenter().wrap());
     if (!map.getCenter().equals(newPos)) {
diff --git a/code/map_data_cache.js b/code/map_data_cache.js
index f5b90579..e6caf3b9 100644
--- a/code/map_data_cache.js
+++ b/code/map_data_cache.js
@@ -7,7 +7,7 @@ window.DataCache = function() {
 
   // stale cache entries can be updated (that's what the optional 'timestampMs' field in getThinnedEntities is
   // for, retrieving deltas) so use a long max age to take advantage of this
-  // however, ther must be an overall limit on the maximum age of data from the servers, otherwise the deletedEntity
+  // however, there must be an overall limit on the maximum age of data from the servers, otherwise the deletedEntity
   // entries would grow indefinitely. an hour seems reasonable from experience with the data, so 55 mins max cache time
 //  this.REQUEST_CACHE_MAX_AGE = 55*60;  // maximum cache age. entries are deleted from the cache after this time
 //UPDATE: this timestampMs parameter doesn't work, so reduced max age to limit RAM usage
diff --git a/code/map_data_render.js b/code/map_data_render.js
index 1a651875..df354c4b 100644
--- a/code/map_data_render.js
+++ b/code/map_data_render.js
@@ -127,7 +127,7 @@ window.Render.prototype.processGameEntities = function(entities) {
 // is considered complete
 window.Render.prototype.endRenderPass = function() {
 
-  // check to see if there's eny entities we haven't seen. if so, delete them
+  // check to see if there are any entities we haven't seen. if so, delete them
   for (var guid in window.portals) {
     // special case for selected portal - it's kept even if not seen
     if (!(guid in this.seenPortalsGuid) && guid !== selectedPortal) {
@@ -567,7 +567,7 @@ window.Render.prototype.resetPortalClusters = function() {
 
 }
 
-// add the portal to the visiable map layer unless we pass the cluster limits
+// add the portal to the visible map layer unless we pass the cluster limits
 window.Render.prototype.addPortalToMapLayer = function(portal) {
 
   var cid = this.getPortalClusterID(portal);
diff --git a/code/munge.js b/code/munge.js
index 5e91ef8f..0a9af428 100644
--- a/code/munge.js
+++ b/code/munge.js
@@ -238,7 +238,7 @@ function extractMungeFromStock() {
 var activeMunge = null;
 
 
-// attempt to guess the munge set in use, by looking therough the functions of the stock intel page for one of the munged params
+// attempt to guess the munge set in use, by looking through the functions of the stock intel page for one of the munged params
 window.detectActiveMungeSet = function() {
 
   // first, try and parse the stock functions and extract the munges directly
diff --git a/code/portal_detail_display.js b/code/portal_detail_display.js
index 03820882..3562844f 100644
--- a/code/portal_detail_display.js
+++ b/code/portal_detail_display.js
@@ -54,7 +54,7 @@ window.renderPortalDetails = function(guid) {
   //(at some future point we can iterate through all the artifact types and add rows as needed)
   var jarvisArtifact = artifact.getPortalData (guid, 'jarvis');
   if (jarvisArtifact) {
-    // the genFourColumnTable function below doesn't handle cases where one column is null and the other isn't - so default to *someting* in both columns
+    // the genFourColumnTable function below doesn't handle cases where one column is null and the other isn't - so default to *something* in both columns
     var target = ['',''], shards = ['shards','(none)'];
     if (jarvisArtifact.target) {
       target = ['target', '<span class="'+TEAM_TO_CSS[jarvisArtifact.target]+'">'+(jarvisArtifact.target==TEAM_RES?'Resistance':'Enlightened')+'</span>'];
diff --git a/code/status_bar.js b/code/status_bar.js
index cd034767..df3b2a0f 100644
--- a/code/status_bar.js
+++ b/code/status_bar.js
@@ -6,7 +6,7 @@ window.renderUpdateStatus = function() {
 
   // portal level display
   var t = '<span class="help portallevel" title="Indicates portal levels displayed.  Zoom in to display lower level portals.">';
-  if(!window.isSmartphone()) // space is valueable
+  if(!window.isSmartphone()) // space is valuable
     t += '<b>portals</b>: ';
   var minlvl = getMinPortalLevel();
   if(minlvl === 0)
diff --git a/external/L.Geodesic.js b/external/L.Geodesic.js
index 20955133..8a6ef59e 100644
--- a/external/L.Geodesic.js
+++ b/external/L.Geodesic.js
@@ -90,7 +90,7 @@ Modified by qnstie 2013-07-17 to maintain compatibility with Leaflet.draw
 
     // geodesic calculations have issues when crossing the anti-meridian. so offset the points
     // so this isn't an issue, then add back the offset afterwards
-    // a center longitude would be ideal - but the start point logitude will be 'good enough'
+    // a center longitude would be ideal - but the start point longitude will be 'good enough'
     var lngOffset = latlngs[0].lng;
 
     // points are wrapped after being offset relative to the first point coordinate, so they're
diff --git a/mobile/src/com/cradle/iitc_mobile/IITC_DeviceAccountLogin.java b/mobile/src/com/cradle/iitc_mobile/IITC_DeviceAccountLogin.java
index fb8e1890..90215244 100644
--- a/mobile/src/com/cradle/iitc_mobile/IITC_DeviceAccountLogin.java
+++ b/mobile/src/com/cradle/iitc_mobile/IITC_DeviceAccountLogin.java
@@ -155,7 +155,7 @@ public class IITC_DeviceAccountLogin implements AccountManagerCallback<Bundle> {
 
             String result = value.getResult().getString(AccountManager.KEY_AUTHTOKEN);
             if (result != null) {
-                // authentication succeded, we can load the given url, which will redirect
+                // authentication succeeded, we can load the given url, which will redirect
                 // back to the intel map
                 mWebView.loadUrl(result);
                 mActivity.loginSucceeded();
diff --git a/plugins/basemap-stamen.user.js b/plugins/basemap-stamen.user.js
index babbade4..80e6a3c6 100644
--- a/plugins/basemap-stamen.user.js
+++ b/plugins/basemap-stamen.user.js
@@ -27,9 +27,9 @@ window.plugin.mapTileStamen.addLayer = function() {
 
   var types = {
     'toner': [ 'Toner', 'png', 0, 20 ],
-//    'toner-hybrid': [ ' Toner Hybrid', 'png', 0, 20 ],  // transparent layer. could be usefun over satelliate imagery or similar
-//    'toner-labels': [ 'Toner Labels', 'png', 0, 20 ],  // transparent layer. could be usefun over satelliate imagery or similar
-//    'toner-lines': [ 'Toner Lines', 'png', 0, 20 ],  // transparent layer. could be usefun over satelliate imagery or similar
+//    'toner-hybrid': [ ' Toner Hybrid', 'png', 0, 20 ],  // transparent layer. could be useful over satellite imagery or similar
+//    'toner-labels': [ 'Toner Labels', 'png', 0, 20 ],  // transparent layer. could be useful over satellite imagery or similar
+//    'toner-lines': [ 'Toner Lines', 'png', 0, 20 ],  // transparent layer. could be useful over satellite imagery or similar
     'toner-background': [ 'Toner Background', 'png', 0, 20 ],
     'toner-lite': [ 'Toner Lite', 'png', 0, 20 ],
     'watercolor': [ 'Watercolor', 'jpg', 1, 16 ],
diff --git a/plugins/bookmarks-by-zaso.user.js b/plugins/bookmarks-by-zaso.user.js
index 9044b01d..3349e846 100644
--- a/plugins/bookmarks-by-zaso.user.js
+++ b/plugins/bookmarks-by-zaso.user.js
@@ -543,8 +543,8 @@
       localStorage[window.plugin.bookmarks.KEY_STORAGE] = promptAction;
       window.plugin.bookmarks.refreshBkmrks();
       window.runHooks('pluginBkmrksEdit', {"target": "all", "action": "import"});
-      console.log('BOOKMARKS: resetted and imported bookmarks');
-      window.plugin.bookmarks.optAlert('Succesful. ');
+      console.log('BOOKMARKS: reset and imported bookmarks');
+      window.plugin.bookmarks.optAlert('Successful. ');
     }
   }
 
@@ -556,8 +556,8 @@
       window.plugin.bookmarks.loadStorage();
       window.plugin.bookmarks.refreshBkmrks();
       window.runHooks('pluginBkmrksEdit', {"target": "all", "action": "reset"});
-      console.log('BOOKMARKS: resetted all bookmarks');
-      window.plugin.bookmarks.optAlert('Succesful. ');
+      console.log('BOOKMARKS: reset all bookmarks');
+      window.plugin.bookmarks.optAlert('Successful. ');
     }
   }
 
@@ -709,7 +709,7 @@
       }, window.plugin.bookmarks.SYNC_DELAY);
   }
 
-  // Store the upadteQueue in updatingQueue and upload
+  // Store the updateQueue in updatingQueue and upload
   window.plugin.bookmarks.syncNow = function() {
     if(!window.plugin.bookmarks.enableSync) return;
     $.extend(window.plugin.bookmarks.updatingQueue, window.plugin.bookmarks.updateQueue);
diff --git a/plugins/keys.user.js b/plugins/keys.user.js
index d1aa488a..7ba1697b 100644
--- a/plugins/keys.user.js
+++ b/plugins/keys.user.js
@@ -86,7 +86,7 @@ window.plugin.keys.delaySync = function() {
     }, plugin.keys.SYNC_DELAY);
 }
 
-// Store the upadteQueue in updatingQueue and upload
+// Store the updateQueue in updatingQueue and upload
 window.plugin.keys.syncNow = function() {
   if(!plugin.keys.enableSync) return;
   $.extend(plugin.keys.updatingQueue, plugin.keys.updateQueue);
diff --git a/plugins/portal-counts.user.js b/plugins/portal-counts.user.js
index 08020cb9..b511d6e8 100644
--- a/plugins/portal-counts.user.js
+++ b/plugins/portal-counts.user.js
@@ -32,7 +32,7 @@
 // use own namespace for plugin
 window.plugin.portalcounts = function() {};
 
-//count portals for each level avalaible on the map
+//count portals for each level available on the map
 window.plugin.portalcounts.getPortals = function(){
   //console.log('** getPortals');
   var retval=false;
diff --git a/plugins/portal-defense.user.js b/plugins/portal-defense.user.js
index 000a2cf5..9f95ce4d 100644
--- a/plugins/portal-defense.user.js
+++ b/plugins/portal-defense.user.js
@@ -152,7 +152,7 @@ var setup =  function() {
   window.plugin.portalDefense.currentDisplay = window.plugin.portalDefense.getDisplay();
   map.on('zoomend', window.plugin.portalDefense.showOrHide);
     
-  // this layer is added to tha layer chooser, to be toggled on/off
+  // this layer is added to the layer chooser, to be toggled on/off
   window.plugin.portalDefense.regionLayerGroup = new L.LayerGroup();
 
   // this layer is added into the above layer, and removed from it when we zoom out too far
diff --git a/plugins/portal-highlighter-my-portals.user.js b/plugins/portal-highlighter-my-portals.user.js
index 63a9f216..583e9e0d 100644
--- a/plugins/portal-highlighter-my-portals.user.js
+++ b/plugins/portal-highlighter-my-portals.user.js
@@ -6,7 +6,7 @@
 // @namespace      https://github.com/jonatkins/ingress-intel-total-conversion
 // @updateURL      @@UPDATEURL@@
 // @downloadURL    @@DOWNLOADURL@@
-// @description    [@@BUILDNAME@@-@@BUILDDATE@@] Uses the fill color of the portals to denote portals you have a hand in. Orange is just ownership. Yellow is sheilds. Red is Resonators. Red trumps both, yellow trumps orange.  
+// @description    [@@BUILDNAME@@-@@BUILDDATE@@] Uses the fill color of the portals to denote portals you have a hand in. Orange is just ownership. Yellow is shields. Red is Resonators. Red trumps both, yellow trumps orange.  
 // @include        https://www.ingress.com/intel*
 // @include        http://www.ingress.com/intel*
 // @match          https://www.ingress.com/intel*
diff --git a/plugins/portals-list.user.js b/plugins/portals-list.user.js
index 8031be7b..2b439f92 100644
--- a/plugins/portals-list.user.js
+++ b/plugins/portals-list.user.js
@@ -26,7 +26,7 @@
 * 0.0.10: Fixed persistent css problem with alert
 * 0.0.9 : bugs hunt
 * 0.0.8 : Aborted to avoid problems with Niantic (export portals informations as csv or kml file)
-* 0.0.7 : more informations avalaible via tooltips (who deployed, energy, ...), new E/AP column 
+* 0.0.7 : more informations available via tooltips (who deployed, energy, ...), new E/AP column 
 * 0.0.6 : Add power charge information into a new column + bugfix
 * 0.0.5 : Filter portals by clicking on 'All portals', 'Res Portals' or 'Enl Portals'
 * 0.0.4 : Add link to portals name, one click to display full information in portal panel, double click to zoom on portal, hover to show address
@@ -49,7 +49,7 @@ window.plugin.portalslist.enlP = 0;
 window.plugin.portalslist.resP = 0;
 window.plugin.portalslist.filter=0;
 
-//fill the listPortals array with portals avalaible on the map (level filtered portals will not appear in the table)
+//fill the listPortals array with portals avaliable on the map (level filtered portals will not appear in the table)
 window.plugin.portalslist.getPortals = function() {
   //filter : 0 = All, 1 = Res, 2 = Enl
   //console.log('** getPortals');
diff --git a/style.css b/style.css
index fe408f59..4dffc9fa 100644
--- a/style.css
+++ b/style.css
@@ -115,7 +115,7 @@ a:hover {
   padding-left: 8px;
 }
 
-/* hide the usual seperator */
+/* hide the usual separator */
 .leaflet-control-layers-separator {
   display: none;
 }
diff --git a/website/code/desktop-download.php b/website/code/desktop-download.php
index 6342c7e7..daf05809 100644
--- a/website/code/desktop-download.php
+++ b/website/code/desktop-download.php
@@ -52,7 +52,7 @@ function iitcDesktopPluginDownloadTable ( $build )
 		'Map Tiles' => "Alternative map layers",
 		'Tweaks' => "Adjust IITC settings",
 		'Misc' => "Unclassified plugins",
-		'Obsolete' => "Plugins that are no longer recommended, due to being superceeded by others or similar",
+		'Obsolete' => "Plugins that are no longer recommended, due to being superceded by others or similar",
 		'Deleted' => "Deleted plugins - listed here for reference only. No download available"
 	);
 
diff --git a/website/index.php b/website/index.php
index 62f57091..43e61f2a 100644
--- a/website/index.php
+++ b/website/index.php
@@ -130,7 +130,7 @@ foreach ( $pages as $key => $name )
 
 	print "<li".($page == $key ? ' class="active"' :'')."><a href=\"$url\">$name</a></li>\n";
 
-	# after 'mobile', add a horizontal seperator
+	# after 'mobile', add a horizontal separator
 	if ( $key == 'test' )
 		print "<li class=\"divider\"></li>";
 }
diff --git a/website/page/faq.php b/website/page/faq.php
index e88156ea..4374caa1 100644
--- a/website/page/faq.php
+++ b/website/page/faq.php
@@ -100,7 +100,7 @@ The colour within the square shows the state of the data:
 </ul>
 The status message at the bottom-right of the screen gives a summary.
 <ul>
-<li>If all requests were succesful/fresh from cache (i.e. all green borders) the status is 'Done'.</li>
+<li>If all requests were successful/fresh from cache (i.e. all green borders) the status is 'Done'.</li>
 <li>If some requests failed, but cached data was available (i.e. some red border/yellow fill) the status is 'Out of date'.</li>
 <li>If some requests failed, but no cached data was available (i.e. some red border/red fill) the status is 'Error'.</li>
 </ul>
diff --git a/website/page/news.php b/website/page/news.php
index 54f82cac..d8fd58e0 100644
--- a/website/page/news.php
+++ b/website/page/news.php
@@ -230,7 +230,7 @@ IITC version 0.12.0 has been released. This contains quite a few changes and new
 <li>Sync plugin - to sync data from the 'Keys' addon to multiple computers via Google Drive</li>
 <li>... and many other tweaks, bug fixes, etc</li>
 </ul>
-IITC Mobile 0.4.0 is also released. THis has also had major work. Along with the above, it includes a
+IITC Mobile 0.4.0 is also released. This has also had major work. Along with the above, it includes a
 new in-app layer chooser and chat/map switcher, and authentication has been revamped to use the native
 Android authentication rather than entering your password.
 </p>