500px is a Toronto-based image hosting service founded by Oleg Gutsol and Evgeny Tchebotarev on October 31, 2009. Initially, the site saw a lackluster reception of 1000 users in 2009, but expanded to over 85,000 users as of June 2011.In June 2011, the startup announced its $525K Series A round with investment from High Line Venture Capital, Deep Creek Capital and ff Venture Capital.
By October 2011, the site's users had grown to three million. New members to the site are provided with a customizable portfolio, however, free users are limited to uploading 20 photos a week. There is an option to purchase a premium membership, which removes these restrictions and offers additional features.