Originally, a distinctive feature of Instagram was its confining of photos to a square; this was changed in August 2015, when an update started allowing users to upload media at full size.In June 2012, an "Explore" tab was introduced, showing users a variety of media, including popular photos and photos taken at nearby locations, trending tags and places, channels for recommended videos, and curated content.
Burbn was then pivoted to become more focused on photo-sharing.
In February 2011, it was reported that Instagram had raised $7 million in Series A funding from a variety of investors, including Benchmark Capital, Jack Dorsey, Chris Sacca (through Capital fund), and Adam D'Angelo.
In November 2012, Instagram launched website profiles, allowing anyone to see users' feeds from their web browsers.
However, the website interface was limited in functionality, with notable omissions including the lack of a search bar, a news feed, and the ability to upload photos.
The app was released as a beta version on November 21, 2013, and was lacking the ability to record and upload video, though an Instagram spokesperson stated that "We're not finished, and our team will continue developing the Windows Phone app to keep releasing features and bringing you the best Instagram possible".
The Android app has received two major exclusive updates.
The first, introduced in March 2014, cut the size of the app by half and added significant improvements to performance and responsiveness on a wide variety of Android devices.
The Verge wrote that the development team had tested the app on devices not for sale in the United States, particularly low-end models like Samsung Galaxy Y, in an effort to improve the app for its userbase located outside the U. Engineering manager Philip Mc Allister told The Verge that "More than 60 percent of our users are outside the US, and Android covers roughly half of total Instagram users".
Instagram has received positive reviews for its i OS app, and it has been named "one of the most influential social networks in the world".
However, the company has been the subject of criticism, most notably for policy and interface changes, allegations of censorship, and illegal or improper content uploaded by users.
In August 2016, Instagram introduced a "Stories" feature, letting users add photos to a 24-hour temporary story, with subsequent updates adding virtual stickers and augmented reality objects.