This page consists of the same block of text rendered in a number of type families commonly used on web pages. By comparing how each block appears with the 'unrecognized family' block that comes first you should be able to work out which families your browser recognizes.
The CSS attribute 'font-family' is used to select the family and the attribute 'font-size' to set the size. This isn't going to work if you have CSS turned off (or in Netscape if you also have JavaScript turned off), or if your browser doesn't support CSS. It also isn't going to work if you have selected 'Override document-specified fonts' (or equivalent).
Browsers differ in how they render text that is supposed to be in a family that they don't recognize. Unix Netscape tends to fall back to a single size of a monospace font, other browsers fall back to their default variable-width font. This block of text is supposed to be in the family 'junkjunkjunk', and therefore will show you what your particular browser does with an unrecognized family.
This is what text will look like if the font isn't available
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
CSS requires that a number of 'generic' fonts be recognized, and it's good practice to include one of these at the end of any list of families in case none of the specific families are recognized. In practice 'serif', 'sans-serif' and 'monospace' are recognized by most browsers, but 'cursive' and 'fantasy' are commonly ignored.
This text should be in 'serif'
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in 'sans-serif'
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in 'cursive'
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in 'fantasy'
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in 'monospace'
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
Microsoft, through their dominant position in the market, have
promoted a set of 'Web Core Fonts' to the extent that many mis-guided
web designers either assume that these are available in all browsers,
or end up using them without realizing by following the defaults in
design packages. Some of these fonts (Arial, Times New Roman, etc)
have been part of Windows for a long time and are now commonly found
on Macs. Others (Verdana, Georgia, etc) are part of later Windows
installations and tend to be provided with copies of Internet
Explorer. The fonts used to be available for free download from http://www.microsoft.com/typography/fontpack/default.htm,
but Microsoft discontinued this in August 2002.
This text should be in Andale Mono
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Arial
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Arial Black
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Comic Sans MS
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Courier New
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Georgia
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Impact
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Monotype.com
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Times New Roman
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Trebuchet MS
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Verdana
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Webdings
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
Thanks to almost universal support in PostScript laser printers since the earliest Apple LaserWriters, a number of Adobe fonts (Times, Helvetica, Courier in particular) are commonly available, though until recently this was more true of Mac and Unix boxes than of Windows machines.
This text should be in Times
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Helvetica
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt
This text should be in Courier
The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog.
This is xx-small, This is x-small, This is small, This is medium, This is large, This is x-large, This is xx-large
This is 6pt, This is 7pt, This is 8pt, This is 9pt, This is 10pt, This is 11pt, This is 12pt, This is 14pt, This is 16pt, This is 18pt, This is 20pt