Instagram is a photo and video sharing social networking service owned by American company Meta Platforms. The app allows users to upload media that can be edited with filters, be organized by hashtags, and be associated with a location — via geographical tagging. Posts can be shared publicly or with preapproved followers. Users can browse other users' content by tags and locations, view trending content, like photos, and follow other users to add their content to a personal feed.
Instagram was originally distinguished by allowing content to be framed only in a square (1:1) of 640 pixels to match the display width of the iPhone at the time. In 2015, this restriction was eased with an increase to 1080 pixels. It also added messaging features, the ability to include multiple images or videos in a single post, and a Stories feature—similar to its main competitor Snapchat—which allowed users to post their content to a sequential feed, with each post accessible to others for 24 hours. As of January 2019, Stories is used by 500 million people daily.
Originally launched for iOS in October 2010 by Kevin Systrom and Mike Krieger, Instagram rapidly gained popularity, with one million registered users in two months, 10 million in a year, and 1 billion by June 2018. In April 2012, Facebook Inc. acquired the service for approximately US1billionincashandstock().TheAndroidversionwasreleasedinApril2012,followedbyafeature−limiteddesktopinterfaceinNovember2012,aFireOSappinJune2014,andanappforWindows10inOctober2016.,over40billionphotoshadbeenuploaded.Althoughoftenadmiredforitssuccessandinfluence,Instagramhasalsobeencriticizedfornegativelyaffectingteens′mentalhealth,itspolicyandinterfacechanges,itsallegedcensorship,andillegalandinappropriatecontentuploadedbyusers.InstagrambegandevelopmentinSanFranciscoasBurbn,amobilecheck−inappcreatedbyKevinSystromandMikeKrieger.OnMarch5,2010,Systromcloseda500,000 () seed funding round with Baseline Ventures and Andreessen Horowitz while working on Burbn.
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