Instagram is a photo and video-sharing social media application that was launched in 2010 by Kevin Systrom. the app was launched on Oct. 6, 2010, and racked up 25,000 users in one day. From the beginning, the primary focus of the app was to feature photographs, specifically those taken on mobile devices. the Android app was released on April 3, 2012. The platform's popularity skyrocketed, with the company reporting more than 40 million active users just two years after launch. This caught the attention of Facebook, which officially purchased Instagram for $1 billion in the summer of 2012.
Instagram allows users to edit and upload photos and short videos through a mobile app. Users can add a caption to each of their posts and use hashtags and location-based geotags to index these posts and make them searchable by other users within the app. Each post by a user appears on their followers' Instagram feeds and can also be viewed by the public when tagged using hashtags or geotags. Users also have the option of making their profile private so that only their followers can view their posts.
Instagram provides a wide range of digital filters that can be applied to users' photos, including ones that add a vintage or faded look. Other editing features include Lux, an effect that lightens shadows, darkens highlights, and increases contrast, and photo-tuning tools allow users to adjust brightness, contrast, saturation, sharpness, structure, straightness, and tint. A manual tilt-shift and vignette effect can also be added to photos.