The sentence 'The quick brown fox jumps over the lazy dog' contains every letter of the English alphabet.

The first known record of this sentence appeared in a journal called The Michigan School Moderator in 1885. It became popular in the late 1800s for testing typewriters. Technicians typed it to make sure every mechanical key worked correctly.In the 1900s, workers used the sentence to test Western Union Teletype machines. This helped them confirm that all characters were sending and receiving across long distances. Today, computer programs like Windows Font Viewer use it to show how different styles of text look.The sentence is 35 letters long. While shorter pangrams exist, they often use rare words that are hard to understand. For example, 'Cwm fjord bank glyphs vext quiz' is only 26 letters but is difficult to read.The fox sentence is useful because it uses common words. It includes frequent letters like 'e' and 't' along with rare letters like 'z', 'q', and 'x'. This makes it a standard tool for calligraphy students and software developers.