|Designer(s)||Luc(as) de Groot|
|Metrically compatible with||Carlito|
Calibri is a sans-serif typeface family designed by Luc(as) de Groot in 2002-2004 and released to the general public in 2007, with Microsoft Office 2007 and Windows Vista. In Office 2007, it replaced Times New Roman as the default typeface in Word and replaced Arial as the default in PowerPoint, Excel, Outlook, and WordPad. De Groot described its subtly rounded design as having "a warm and soft character".
Calibri is part of the ClearType Font Collection, a suite of fonts from various designers released with Windows Vista. All start with the letter C to reflect that they were designed to work well with Microsoft's ClearType text rendering system, a text rendering engine designed to make text clearer to read on liquid-crystal display monitors. The other fonts in the same group are Cambria, Candara, Consolas, Constantia and Corbel.
Calibri features subtly rounded stems and corners that are visible at larger sizes. Its sloped form is a "true italic" with handwriting influences, which are common in modern sans-serif typefaces.
The typeface includes characters from Latin, Latin extended, Greek and Cyrillic scripts. Calibri makes extensive use of sophisticated OpenType formatting; it features a range of ligatures as well as lining and text figures, indices (numbers enclosed by circles) up to 20, and an alternate f and g accessible by enabling the fourth and fifth stylistic sets. Some features in Calibri remain unsupported by Office, including true small caps, all-caps spacing, superscript and subscript glyphs and the ability to create arbitrary fractions; these may be accessed using programs such as Adobe InDesign.
One potential source of confusion in Calibri is a visible homoglyph, a pair of easily confused characters: the lowercase letter L and the uppercase letter i (l and I) of the Latin script are effectively indistinguishable; this is true of many other common fonts, however.
Calibri is the default typeface of Microsoft Office and much other Microsoft software. Joe Friend, a program manager on Word for Office 2007's release, explained that the decision to switch to Calibri was caused by a desire to make the default font one optimised towards onscreen display: "We believed that more and more documents would never be printed but would solely be consumed on a digital device", and to achieve a "modern look".
Because of the long development of Windows Vista, Calibri's development - from 2002 to 2004 - occurred several years before the release of that OS. It was first presented in a 2004 beta of Windows Vista, then codenamed Longhorn, and first became available for use with the Beta 2 version of Office 2007, released on May 23, 2006. Calibri and the rest of the ClearType Font Collection were finally released to the general public on January 30, 2007, since when it has been released with most Microsoft software environments.
Calibri is also distributed with Microsoft Excel Viewer, Microsoft PowerPoint Viewer, the Microsoft Office Compatibility Pack for Microsoft Windows and the Open XML File Format Converter for Mac. For use in other operating systems, such as cross-platform web use, Calibri is licensed by Ascender Corporation and its parent company Monotype Imaging.
The font Calibri Light was introduced in Microsoft Windows 8 and added to Windows 7 and Server 2008 as part of a software update. From Microsoft Word 2013 onwards, Calibri and Calibri Light are the default fonts for body text and headings respectively. Calibri Light is also a default font for headings in Powerpoint.
In 2013, due to Calibri's widespread use in Microsoft Office documents, Google released a freely-licensed font called Carlito, which is metric-compatible to Calibri, as part of ChromeOS. Because Carlito has the same font metrics as Calibri, ChromeOS users can correctly display and print a document designed in Calibri without disrupting layout. Carlito was based on the prior open-source typeface Lato, without de Groot's involvement.
Because of Calibri's position as the default font in Office, many cases have been reported in which documents were shown to be forged thanks to a purported creation date before Calibri was available to the general public. In 2017, the font came to public attention as evidence in the Pakistani government-related "Panama Papers" case (also known as #Fontgate), in which a document supposedly signed in February 2006 was found to be typed up in Calibri. De Groot said that there was "really zero chance" that the document was genuine.