Editing Emoji (section)

==Emoji implementation==
{{main|Implementation of emoji}}

===Early implementation in Japan===
Various, often incompatible, character encoding schemes were developed by the different mobile providers in Japan for their own emoji sets.<ref name="utcL210132" /><ref name="EmojiSources">{{cite web |url=https://www.unicode.org/Public/UCD/latest/ucd/EmojiSources.txt |title=Emoji Sources |work=Unicode Character Database |author=Unicode Consortium |author-link=Unicode Consortium}}</ref> For example, the extended [[Shift JIS]] representation F797 is used for a [[convenience store]] (🏪) by SoftBank, but for a [[wristwatch]] (⌚️) by KDDI.<ref name="EmojiSources" /><ref name="utcL210132" /> All three vendors also developed schemes for encoding their emoji in the Unicode [[Private Use Area]]: DoCoMo, for example, used the range U+E63E through U+E757.<ref name="utcL210132" /> Versions of [[iOS]] prior to 5.1 encoded emoji in the SoftBank private use area.<ref>{{cite web |url=https://emojipedia.org/apple/ios-5.1/ |work=[[Emojipedia]] |title=Apple iOS 5.1}}</ref><ref>{{cite web |url=https://emojipedia.org/apple/iphone-os-2.2/ |work=[[Emojipedia]] |title=Apple iPhone OS 2.2}}</ref>
===Unicode support considerations===
Most, but not all, emoji are included in the [[Supplementary Multilingual Plane]] (SMP) of Unicode, which is also used for ancient scripts, some modern scripts such as [[Adlam (Unicode block)|Adlam]] or [[Osage (Unicode block)|Osage]], and special-use characters such as [[Mathematical Alphanumeric Symbols]].<ref>{{cite web |url=https://www.unicode.org/roadmaps/smp/smp-13-0-3.html |title=Roadmap to the SMP |first1=Michael |last1=Everson |first2=Rick |last2=McGowan |first3=Ken |last3=Whistler |first4=V.S. |last4=Umamaheswaran |date=2020-07-22 |version=Revision 13.0.3}}</ref> Some systems introduced prior to the advent of Unicode emoji were only designed to support characters in the [[Basic Multilingual Plane]] (BMP) on the assumption that non-BMP characters would rarely be encountered,<ref name="backendless">{{cite web |url=https://backendless.com/extended-string-data-type/ |title=How We Store Emojis in Your Database, or Why We Got Rid of the Extended String Data Type |first=Sergey |last=Chupov |date=2019-06-06 |publisher=Backendless Corporation}}</ref> although failure to properly handle characters outside of the BMP precludes Unicode compliance.<ref name="lundeastral">{{cite book |last=Lunde |first=Ken |year=2009 |title=CJKV Information Processing |edition=2nd |page=200 |location=Sebastopol CA. |publisher=[[O'Reilly Media]] |isbn=978-0-596-51447-1}}</ref>

The introduction of Unicode emoji created an incentive for vendors to improve their support for non-BMP characters.<ref name="backendless"/> The Unicode Consortium notes that "[b]ecause of the demand for emoji, many implementations have upgraded their Unicode support substantially", also helping support minority languages that use those features.<ref name="detract">{{cite web |url=https://unicode.org/faq/emoji_dingbats.html#EO1 |title=Don't emoji detract from the other work of the consortium? |series=Frequently Asked Questions: Emoji and Pictographs |publisher=[[Unicode Consortium]]}}</ref>

===Color support===
Any operating system that supports adding additional fonts to the system can add an emoji-supporting font. However, inclusion of colorful emoji in existing font formats requires dedicated support for color [[glyphs]]. Not all operating systems have support for color fonts, so, emoji might have to be rendered as black-and-white line art or not at all. There are four different formats used for multi-color glyphs in an [[SFNT]] font,<ref name="mscolotf">{{citation|mode=cs1 |url=https://docs.microsoft.com/en-us/windows/win32/directwrite/color-fonts#what-kinds-of-color-fonts-does-windows-support |title=Color Fonts |work=[[Microsoft Docs]] |date=2018-05-31 |author=Microsoft |author-link=Microsoft}}</ref> not all of which are necessarily supported by a given operating system library or software package such as a web browser or graphical program.<ref name="cfwt">{{cite web |url=https://www.colorfonts.wtf/#section2 |title=What's inside color fonts? |website=Color Fonts – Get ready for the revolution!}}</ref>

===Implementation by different platforms and vendors===
Apple first introduced emoji to their desktop operating system with the release of [[Mac OS X Lion|OS X 10.7 Lion]], in 2011. Users can view emoji characters sent through email and messaging applications, which are commonly shared by mobile users, as well as any other application. Users can create emoji symbols using the "Characters" special input panel from almost any native application by selecting the "Edit" menu and pulling down to "Special Characters", or by the key combination {{key press|Command|Option|T}}. The emoji keyboard was first available in Japan with the release of [[iPhone OS 2|iPhone OS version 2.2]] in 2008.<ref>{{Cite web|title=Apple releases iPhone Software v2.2|url=https://appleinsider.com/article/?id=10447|website=AppleInsider|access-date=February 28, 2017|archive-date=March 1, 2017|archive-url=https://web.archive.org/web/20170301180231/http://appleinsider.com/article/?id=10447|url-status=dead}}</ref> The emoji keyboard was not officially made available outside of Japan until [[iOS 5|iOS version 5.0]].<ref>{{Cite web|title=Standard Emoji keyboard arrives to iOS 5, here's how to enable it|url=https://9to5mac.com/2011/06/08/standard-emoji-keyboard-arrives-to-ios-5-heres-how-to-enable-it/|website=9to5Mac|date=June 8, 2011|access-date=February 28, 2017}}</ref> From iPhone OS 2.2 through to iOS 4.3.5 (2011), those outside Japan could access the keyboard but had to use a third-party app to enable it. Apple has revealed that the "face with tears of joy" is the most popular emoji among English-speaking Americans. On second place is the "heart" emoji, followed by the "Loudly Crying Face".<ref>{{Cite news|url=https://www.macrumors.com/2017/11/03/face-with-tears-of-joy-most-popular-emoji/ |website=MacRumors |date=November 3, 2017 |first1=Joe |last1=Rossignol |title=Apple Says 'Face With Tears of Joy' is Most Popular Emoji in United States Among English Speakers|access-date=November 3, 2017|language=en}}</ref>{{Better citation needed|reason=The current source is insufficiently reliable ([[WP:NOTRS]]).|date=August 2024}}

An update for [[Windows 7]] and [[Windows Server 2008 R2]] brought a subset of the monochrome Unicode set to those operating systems as part of the ''[[Segoe|Segoe UI Symbol]]'' font.<ref name="An update for the Segoe UI symbol font in Windows 7 and in Windows Server 2008 R2 is available">{{cite web |url=http://support.microsoft.com/kb/2729094|title=An update for the Segoe UI symbol font in Windows 7 and in Windows Server 2008 R2 is available|publisher=Microsoft Support |url-status=live |archive-url=https://web.archive.org/web/20141229143136/http://support.microsoft.com/kb/2729094 |archive-date= Dec 29, 2014 }}</ref> As of [[Windows 8.1]] Preview, the ''Segoe UI Emoji'' font is included, which supplies full-color pictographs. The plain Segoe UI font lacks emoji characters, whereas Segoe UI Symbol and Segoe UI Emoji include them. Emoji characters can be accessed through the onscreen keyboard's {{key press|😀}} key or through the physical keyboard shortcut {{key press|Win|.}}.

In 2016, [[Firefox]] 50 added in-browser emoji rendering for platforms lacking in native support.<ref>{{cite web | url=https://www.mozilla.org/en-US/firefox/50.0/releasenotes/ | title=Firefox 50.0, See All New Features, Updates and Fixes |website=Mozilla |url-status=live |archive-url=https://web.archive.org/web/20240115064222/https://www.mozilla.org/en-US/firefox/50.0/releasenotes/ |archive-date= Jan 15, 2024 }}</ref>

[[Facebook]] and [[Twitter]] replace all Unicode emoji used on their websites with their own custom graphics. Prior to October 2017, Facebook had different sets for the main site and for its [[Facebook Messenger|Messenger]] service, where only the former provides complete coverage. Messenger now uses Apple emoji on iOS, and the main Facebook set elsewhere.<ref>{{cite web |url=https://blog.emojipedia.org/facebook-discontinues-messenger-emojis/ |title=Facebook Discontinues Messenger Emojis |date=2 October 2017 |publisher=[[Emojipedia]] |first=Jeremy |last=Burge |url-status=live |archive-url=https://web.archive.org/web/20230924002918/https://blog.emojipedia.org/facebook-discontinues-messenger-emojis/ |archive-date= Sep 24, 2023 }}</ref> [[Facebook like button#Use on Facebook|Facebook reactions]] are only partially compatible with standard emoji.<ref>{{Cite web|title=👍 Facebook Emoji List — Emojis and Reacts for Facebook|url=https://emojipedia.org/facebook/|access-date=2022-02-07|website=Emojipedia|language=en|quote=Facebook provides animated "emoji" reactions to posts. Reactions do not correspond to specific emoji in the Unicode standard (...). In March 2020, Facebook added a ''Care'' emoji reaction as an additional option in response to COVID-19. This is displayed similarly to a hugging face holding a red love heart. This ''Care emoji'' is not available as a standardized Unicode emoji, and can only be used in reactions to Facebook posts.}}</ref>