Gerade das Konfigurieren des RichText-Editors (RTE) von Typo3 benötigt etwas Fingerspitzengefühl, die unten angeführte Beispielkonfiguration soll dabei als Vorlage dienen. Das TypoScript wird dabei in das TSConfig-Feld der entsprechenden Seite kopiert (Einstellungen werden im Baum nach unten weitervererbt).

#
# RTE config
#

# define classes for link-types
RTE.classesAnchor {
    
  externalLink {
    class = link_external
    type = url
    image >
    titleText =
  }

  internalLink {
    class = link_internal
    type = page
    image >
    titleText =
  }

  download {
    class = link_file
    type = file
    image >
    titleText =
  }

  mail {
    class = link_mail
    type = mail
    image >
    titleText =
  }
}

# configure RTE
RTE.default {
  # set CSS where content is defined
  # Attention -> CSS must be simple, no charset no media definition
  contentCSS = fileadmin/rte.css
  useCSS = 1
   
  # hide classes which are not configured above
  #showTagFreeClasses = 1
       
  # disable make paragraphs on enter
  #disableEnterParagraphs = 1

    
  # remove trailing br-tags
  removeTrailingBR=1    

  # markup options
  enableWordClean = 1
  removeComments = 1
  removeTags = center, sdfield
  removeTagsAndContents = style,script

  # set max image size
  buttons.image.options.plain.maxWidth = 370
  buttons.image.options.magic.maxWidth = 370

 
  # set allowed classes for links
  classesAnchor = link_internal, link_external, link_file, link_mail
  # set default link classes for different types
  classesAnchor.default {
    page = link_internal
    url = link_external
    file = link_file
    mail = link_mail
  }

 
  # set allowed classes for paragraphs
  classesParagraph =
 
  # set class for image
  classesImage = rte_image

 
  # add inline style
  #inlineStyle.text-alignment (
  #  p.nomargin {margin: 0}
  #  p.greytext {padding:0 0 20px 0; margin:0; line-height: 1.5em; color:#777777;}
  #  p.smalltext {padding:0 0 1em 0; margin:0; line-height: 1.5em; font-size:0.6em;}
  #)
    
  ignoreMainStyleOverride = 1
 
  # define formatblock
  buttons.formatblock.orderItems = p, h1, h2, h3, h4, h5, h6
 
  # set allowed tags and cleaning options
  proc {
   allowTags = table, tbody, tr, th, td, h1, h2, h3, h4, h5, h6, div, p, br, ul, ol, li,strong, em, b, i, u, sub, sup, a, img
   denyTags = span, font, re, blockqote, strong, strike, nobr, hr, tt, q, cite, abbr, acronym
   dontConvBRtoParagraph = 1
   allowTagsOutside = img,hr,a,p,div
   keepPDIVattribs = class,style,id
        
   # set all used classes here
   allowedClasses = link_internal, link_external, link_file, link_mail
    
   entryHTMLparser_db = 1
   entryHTMLparser_db {
     # xhtml cleaning
     xhtml_cleaning = 1

     # remiove attributes at following tags
     noAttrib = b,i,u,strike,sub,sup,strong,em,quote,blockquote,cite,tt,br,center
    
     # remap b and i tags
     tags.b.remap = strong
     tags.i.remap = em

     # remove tags without attributes
     rmTagIfNoAttrib = span,div,font
                
     # enable special html chars, not needed in utf-8 environment
     #htmlSpecialChars = 1
   }
  }

    
 # show hide buttons
 showButtons =  image, formatblock, chMode, inserttag, bold, italic, underline, left, center, right, orderedlist, unorderedlist, insertcharacter, link, removeformat,  findreplace, insertcharacter, undo, redo, showhelp, about, subscript, superscript
 hideButtons =  textstyle, textstylelabel, blockstyle, blockstylelabel, fontstyle, fontsize, strikethrough, lefttoright, righttoleft, textcolor, bgcolor, textindicator, emoticon, line, user, spellcheck, outdent, indent, justifyfull, acronym, copy, cut, pastetable, toggleborders, tableproperties, rowproperties, rowinsertabove, rowinsertunder, rowdelete, rowsplit, columninsertbefore, columninsertafter, columndelete, columnsplit, cellproperties, cellinsertbefore, cellinsertafter, celldelete, cellsplit, cellmerge
}

# Breite des RTE in Fullscreen-Ansicht
TCEFORM.tt_content.bodytext.RTEfullScreenWidth= 80%