Valid HTML 4.01!

Test for UTF-8:   German, Russian, Polish
(including form input and form elements such as selection list)

Another UTF-8 page, with Japanese, is here:
"Japanese, German, Russian, Polish".

      German:        Ä ä Ü ü ß

      Russian:      Я Б Г Д Ж Й

      Polish:          Ł Ą Ż Ę Ć Ń Ś Ź

HTML form
UTF-8 letters in input area, in selection list, on buttons

    Input line:     
    (type national text or copy it from the above)

    Selection Menu:

       

This form has ...method=GET for Submit - to show you what Hex values (byte values representing the letters typed) are submitted as an URL-encoded string displayed in the Address bar after you hit "Submit".

I have a reference table that contains the byte values of some test national strings for various encodings (see UTF-8 data there to check this UTF-8 test page Submit results), you may want to open it in another window to see both your Submit results and the reference table:
  "Byte (Hex) values for testing".

Paul Gorodyansky