fix typos

TODO

@@ -45,7 +45,7 @@ Not enough motivation/Lazy
  - multiple charcode mapped to a same glyph
  - minimum line width of css drawing
  - separate classes for annotations (such that we don't have to hide all css drawings for printing)
- - Widget Annoataion
+ - Widget Annotation
  - handle large negative letter space
  - optimization levels
  

pdf2htmlEX.1.in

@@ -311,7 +311,7 @@ Print debug information.
 
 .TP
 .B \-\-proof <0|1|2> (Default: 0)
-Output a proof version. If a positive value is specified, texts are drawn on both text layer and background image for comparision.
+Output a proof version. If a positive value is specified, texts are drawn on both text layer and background image for comparison.
 If 2 is specified, texts on background are in different colors. If png/jpg background format is used,
 a higher hdpi/vdpi (e.g. 288) is recommended for legibility.
 

share/pdf2htmlEX.js.in

@@ -818,7 +818,7 @@ Viewer.prototype = {
   },
 
   /**
-   * @param{string} detail_str may come from user provided hashtag, need sanitzing
+   * @param{string} detail_str may come from user provided hashtag, need sanitizing
    * @param{Page=} src_page page containing the source event (e.g. link)
    */
   navigate_to_dest : function(detail_str, src_page) {
@@ -901,7 +901,7 @@ Viewer.prototype = {
 
     var self = this;
     /**
-     * page should of type Page 
+     * page should have type Page
      * @param{Page} page 
      */
     var transform_and_scroll = function(page) {

src/HTMLRenderer/font.cc

@@ -445,7 +445,7 @@ void HTMLRenderer::embed_font(const string & filepath, GfxFont * font, FontInfo
      * re-encoding the font by glyph names
      *
      * for 8bit + TrueType
-     * sort the glpyhs as the original order, and load the code2GID table
+     * sort the glyphs as the original order, and load the code2GID table
      * later we will map GID (instead of char code) to Unicode
      *
      * for CID + nonTrueType
@@ -884,7 +884,7 @@ const FontInfo * HTMLRenderer::install_font(GfxFont * font)
     /*
      * The 2nd parameter of locateFont should be true only for PS
      * which does not make much sense in our case
-     * If we specify gFalse here, font_loc->locaType cannot be gfxFontLocResident
+     * If we specify gFalse here, font_loc->locType cannot be gfxFontLocResident
      */
     if(auto * font_loc = font->locateFont(xref, nullptr))
     {

src/util/unicode.h

@@ -17,7 +17,7 @@ namespace pdf2htmlEX {
  * Check whether a unicode character is illegal for the output HTML.
  * Unlike PDF readers, browsers has special treatments for such characters (normally treated as
  * zero-width space), regardless of metrics and glyphs provided by fonts. So these characters
- * should be mapped to unicode private area to "cheat" browsers, at the cost of loosing actual
+ * should be mapped to unicode private area to "cheat" browsers, at the cost of losing actual
  * unicode values in the HTML.
  *
  * The following chart shows illegal characters  in HTML by webkit, mozilla, and pdf2htmlEX (p2h).