diff --git a/common/components/protocols.js b/common/components/protocols.js
index 03d75422..6e590716 100644
--- a/common/components/protocols.js
+++ b/common/components/protocols.js
@@ -178,7 +178,7 @@ AboutHandler.prototype = {
     getURIFlags: function (uri) Ci.nsIAboutModule.ALLOW_SCRIPT,
 };
 
-// A hack to get infermation about interfaces.
+// A hack to get information about interfaces.
 // Doesn't belong here.
 function Shim() {}
 Shim.prototype = {
diff --git a/common/content/abbreviations.js b/common/content/abbreviations.js
index 5a9e2935..10d29e55 100644
--- a/common/content/abbreviations.js
+++ b/common/content/abbreviations.js
@@ -1,6 +1,6 @@
 // Copyright (c) 2006-2009 by Martin Stubenschrott <stubenschrott@vimperator.org>
 // Copyright (c) 2010 by anekos <anekos@snca.net>
-// Copyright (c) 2010 by Kris Maglion <maglione.k at Gmail>
+// Copyright (c) 2010 by Kris Maglione <maglione.k at Gmail>
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the License.txt file included with this file.
diff --git a/common/content/buffer.js b/common/content/buffer.js
index 530652fb..0f8fb74a 100644
--- a/common/content/buffer.js
+++ b/common/content/buffer.js
@@ -184,7 +184,7 @@ const Buffer = Module("buffer", {
             let doc = event.originalTarget;
             // document is part of a frameset
             if (doc.defaultView.frameElement) {
-                // hacky way to get rid of "Transfering data from ..." on sites with frames
+                // hacky way to get rid of "Transferring data from ..." on sites with frames
                 // when you click on a link inside a frameset, because asyncUpdateUI
                 // is not triggered there (Gecko bug?)
                 this.timeout(function () { statusline.updateUrl(); }, 10);
@@ -814,7 +814,7 @@ const Buffer = Module("buffer", {
         // find the currently focused frame index
         // TODO: If the window is a frameset then the first _frame_ should be
         //       focused.  Since this is not the current FF behaviour,
-        //       we initalize current to -1 so the first call takes us to the
+        //       we initialize current to -1 so the first call takes us to the
         //       first frame.
         let current = frames.indexOf(document.commandDispatcher.focusedWindow);
 
diff --git a/common/content/commands.js b/common/content/commands.js
index 4e00a462..6262fd7f 100644
--- a/common/content/commands.js
+++ b/common/content/commands.js
@@ -237,7 +237,7 @@ const Command = Class("Command", {
     count: false,
     /**
      * @property {function(args)} A function which should return a list
-     *     of domains referenced in the given args. Used in determing
+     *     of domains referenced in the given args. Used in determining
      *     whether to purge the command from history when clearing
      *     private data.
      */
diff --git a/common/content/completion.js b/common/content/completion.js
index d8f6d1d3..505a400d 100644
--- a/common/content/completion.js
+++ b/common/content/completion.js
@@ -666,7 +666,7 @@ const CompletionContext = Class("CompletionContext", {
      * @param {boolean} interruptible When true, the call may be interrupted
      *    via <C-c>, in which case, "Interrupted" may be thrown.
      * @param {number} timeout The maximum time, in milliseconds, to wait.
-     *    If 0 or null, wait indefinately.
+     *    If 0 or null, wait indefinitely.
      */
     wait: function wait(interruptable, timeout) {
         let end = Date.now() + timeout;
diff --git a/common/content/dactyl.js b/common/content/dactyl.js
index f7e98a7b..a9c9d186 100644
--- a/common/content/dactyl.js
+++ b/common/content/dactyl.js
@@ -576,7 +576,7 @@ const Dactyl = Module("dactyl", {
         function addURIEntry(file, uri)
             zip.addEntryChannel(PATH + file, TIME, 9,
                 services.get("io").newChannel(uri, null, null), false);
-        function addDataEntry(file, data) // Inideal to an extreme.
+        function addDataEntry(file, data) // Unideal to an extreme.
             addURIEntry(file, "data:text/plain;charset=UTF-8," + encodeURI(data));
 
         let empty = set("area base basefont br col frame hr img input isindex link meta param"
@@ -805,7 +805,7 @@ const Dactyl = Module("dactyl", {
      * false on error.
      *
      * @param {string|Array} urls A representation of the URLs to open. May be
-     *     either a string, which will be bassed to
+     *     either a string, which will be passed to
      *     {@see Dactyl#stringToURLArray}, or an array in the same format as
      *     would be returned by the same.
      * @param {object} params A set of parameters specifing to open the
@@ -813,7 +813,7 @@ const Dactyl = Module("dactyl", {
      *
      *      • background   If true, new tabs are opened in the background.
      *
-     *      • from         The desgination of the opener, as appears in
+     *      • from         The designation of the opener, as appears in
      *                     'activate' and 'newtab' options. If present,
      *                     the newtab option provides the default 'where'
      *                     parameter, and the value of the 'activate'
@@ -821,7 +821,7 @@ const Dactyl = Module("dactyl", {
      *
      *      • where        One of CURRENT_TAB, NEW_TAB, or NEW_WINDOW
      *
-     *      As a deprecated special case, the where paramater may be provided
+     *      As a deprecated special case, the where parameter may be provided
      *      by itself, in which case it is transformed into { where: params }.
      *
      * @param {boolean} force Don't prompt whether to open more than 20
@@ -2070,7 +2070,7 @@ const Dactyl = Module("dactyl", {
                 // FIXME:
                 // 'encoding' option should not be set at this timing.
                 // Probably a wrong value is set into the option,
-                // if current page's encoging is not UTF-8.
+                // if current page's encoding is not UTF-8.
                 try {
                     if (option.name != "encoding");
                         option.value = option.value;
diff --git a/common/content/events.js b/common/content/events.js
index f054d6dd..97f2c69f 100644
--- a/common/content/events.js
+++ b/common/content/events.js
@@ -303,7 +303,7 @@ const Events = Module("events", {
                 // A special hack for dactyl-specific key names.
                 if (evt_obj.dactylString || evt_obj.dactylShift) {
                     evt.dactylString = evt_obj.dactylString; // for key-less keypress events e.g. <Nop>
-                    evt.dactylShift = evt_obj.dactylShift; // for untypable shift keys e.g. <S-1>
+                    evt.dactylShift = evt_obj.dactylShift; // for untypeable shift keys e.g. <S-1>
                     events.onKeyPress(evt);
                 }
 
@@ -383,7 +383,7 @@ const Events = Module("events", {
      * <C- > maps to <C-Space>, <S-a> maps to A
      * << maps to <lt><lt>
      *
-     * <S-@> is preserved, as in vim, to allow untypable key-combinations
+     * <S-@> is preserved, as in vim, to allow untypeable key-combinations
      * in macros.
      *
      * canonicalKeys(canonicalKeys(x)) == canonicalKeys(x) for all values
@@ -408,7 +408,7 @@ const Events = Module("events", {
      * .dactylShift these are set for characters that can never by
      * typed, but may appear in mappings, for example <Nop> is passed as
      * dactylString, and dactylShift is set when a user specifies
-     * <S-@> where @ is a non-case-changable, non-space character.
+     * <S-@> where @ is a non-case-changeable, non-space character.
      *
      * @param {string} keys The string to parse.
      * @returns {Array[Object]}
diff --git a/common/content/hints.js b/common/content/hints.js
index fc5886dd..20638960 100644
--- a/common/content/hints.js
+++ b/common/content/hints.js
@@ -180,7 +180,7 @@ const Hints = Module("hints", {
                 let leftBound = Infinity;
                 let topBound = Infinity;
 
-                // First find the top-left corner of the bounding rectangle (offset from image topleft can be noticably suboptimal)
+                // First find the top-left corner of the bounding rectangle (offset from image topleft can be noticeably suboptimal)
                 for (let i = 0; i < coords.length; i += 2) {
                     leftBound = Math.min(coords[i], leftBound);
                     topBound = Math.min(coords[i + 1], topBound);
diff --git a/common/content/io.js b/common/content/io.js
index 1a15b77a..e621e874 100644
--- a/common/content/io.js
+++ b/common/content/io.js
@@ -518,7 +518,7 @@ lookup:
     },
 
     /**
-     * @property {string} The current platform's path seperator.
+     * @property {string} The current platform's path separator.
      */
     PATH_SEP: File.PATH_SEP
 }, {
diff --git a/common/content/options.js b/common/content/options.js
index 8872c35b..5931534f 100644
--- a/common/content/options.js
+++ b/common/content/options.js
@@ -272,7 +272,7 @@ const Option = Class("Option", {
 
     /**
      * @property {function(host, values)} A function which should return a list
-     *     of domains referenced in the given values. Used in determing whether
+     *     of domains referenced in the given values. Used in determining whether
      *     to purge the command from history when clearing private data.
      * @see Command#domains
      */
@@ -786,7 +786,7 @@ const Options = Module("options", {
      * Remove the option with matching <b>name</b>.
      *
      * @param {string} name The name of the option to remove. This can be
-     *     any of the options's names.
+     *     any of the option's names.
      */
     remove: function (name) {
         let opt = this.get(name);
@@ -802,7 +802,7 @@ const Options = Module("options", {
      * Returns the value of the preference <b>name</b>.
      *
      * @param {string} name The preference name.
-     * @param {value} forcedDefault The the default value for this
+     * @param {value} forcedDefault The default value for this
      *     preference. Used for internal dactyl preferences.
      */
     getPref: function (name, forcedDefault) {
diff --git a/common/modules/base.jsm b/common/modules/base.jsm
index a3bd51cf..12a007ad 100644
--- a/common/modules/base.jsm
+++ b/common/modules/base.jsm
@@ -376,7 +376,7 @@ function iter(obj) {
 
 /**
  * Returns true if both arguments are functions and
- * (targ() instaneof src) would also return true.
+ * (targ() instanceof src) would also return true.
  *
  * @param {function} targ
  * @param {function} src
diff --git a/common/modules/storage.jsm b/common/modules/storage.jsm
index 1e404a07..1888bb27 100644
--- a/common/modules/storage.jsm
+++ b/common/modules/storage.jsm
@@ -405,7 +405,7 @@ const File = Class("File", {
 
         if (!perms)
             perms = parseInt('0644', 8);
-        if (!this.exists()) // OCREAT won't creat the directory
+        if (!this.exists()) // OCREAT won't create the directory
             this.create(this.NORMAL_FILE_TYPE, perms);
 
         ofstream.init(this, mode, perms, 0);
@@ -486,7 +486,7 @@ const File = Class("File", {
     MODE_EXCL: 0x80,
 
     /**
-     * @property {string} The current platform's path seperator.
+     * @property {string} The current platform's path separator.
      */
     get PATH_SEP() {
         delete this.PATH_SEP;