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Instagram is an American photo and short-form video sharing social networking service owned by Meta Platforms. It 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. A Meta-operated image-centric social media platform, it is available on iOS, Android, Windows, and the Web. Users can take photos and edit them using built-in filters and other tools, then share them on other social media platforms like Facebook. It supports 33 languages including English, Hindi, Spanish, French, Japanese, and Korean. Instagram was originally distinguished by allowing content to be framed only in a square (1:1) aspect ratio 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 was used by 500 million people daily.
The Burbn Beta app was made available for iOS on October 6, 2010, by Kevin Systrom and Mike Krieger — still as a testing prototype, but for the first time available as a real app on the App Store rather than a web-based prototype. The app received around 25,000 registrations that day, even though it was built for testing purposes only. Six days later, on October 12, 2010, the final stable non-beta version was officially released under a new name — Instagram. This was the first official public release, not a testing version. This renaming gave an even bigger response: the app rapidly gained popularity, reaching 1 million registered users in two months, 10 million in a year, and 1 billion in June 2018. In April 2012, Facebook acquired the service for approximately US$1 billion in cash and stock. The Android version of Instagram was released in April 2012, followed by a feature-limited desktop interface in November 2012, a Fire OS app in June 2014, an app for Windows 10 in October 2016, and an app for iPadOS in September 2025. Although often admired for its success and influence, Instagram has also been criticized for negatively affecting teens' mental health, its policy and interface changes, its alleged censorship, and illegal and inappropriate content uploaded by users.