In Mac-FF 41 (and 40) the Umlaut-dos of the letter Ä are rendered too close to the rest of the letter, as it shows in the picture below. In other Browsers however (Chrome, Safari) the type renders correctly.

enter image description here

The problem only occurs when I apply css "text-transform: uppercase;" to a small letter "ä". It looks fine when I use the actual uppercase letter "Ä".

The webfont I would like to use is "MuseoSans" – however the same problem occurs when I use a similar webfont "Equip-Light".

I did try playing with font-size and line-height – but the problem remains the same. Also with other Umlaut-letters "Ü" and "Ö" it seems to be ok, probably at least because the letters have a different 'architecture' of the letter.

Most of the answers I found at least close to the topic are related to UTF8-issues – but that's not the problem here. I hope that anybody here might have a suggestion what is causing this problem – and how I can solve it. Any pointers appreciated.

2 Answers 2


Mostly its not the issue of browser, but of the font. the answer semms to me to be simple: creators of the fonts you use haven't created optimal Umlaut letters.

There are many fonts: some of them are good with Latin characters, and very bad with Cyrillic, or good with Cyrillic and bad with Scandinavian umlauts.

All fonts done by people - some of them aren't experienced enough or just invested few time in creation of such rare characters.

Take another font and be happy.

  • Thank you for your reply! What really leaves me puzzled is that the actual uppercase letter Ä seems to be perfectly ok – only when I apply "uppercase" through css to a small "ä" it looks 'muddy'. For now I'll probably just enter the headline in uppercase LETTERS instead up using css… although the 'dirtyness' of this approach does bother me a lot :/ Oct 1, 2015 at 15:27

Just found the source for this problem: the ill-formated letters are coming from a PDF.

Solution: Rewriting the letters helps.

I had this problem already some time ago in a different context – seems to be mostly PDF-related…

  • How do you apply CSS text transforms to text inside a PDF? Oct 1, 2015 at 15:59
  • ...generating a PDF from the rendered HTML/CSS?
    – MrWhite
    Oct 3, 2015 at 0:35
  • I was actually just referring to copying text from a PDF. Oct 4, 2015 at 12:47

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