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Impact is a realist sans-serif typeface designed by Geoffrey Lee in 1965 and released by the Stephenson Blake foundry. It is well-known for having been included in the core fonts for the Web package and distributed with Microsoft Windows since Windows 98. More recently, it has been used extensively in image macros and internet memes.
Its ultra-thick strokes, compressed letterspacing, and minimal interior counterform are specifically aimed, as its name suggests, to "impact". Impact has a high x-height, reaching nearly to three-quarters the capital line. Ascenders are short, and descenders even shorter...