screenshot

screenshot.cs

        var camWidth = Screen.width;
        var camHeight = Screen.height;

        var rt = new RenderTexture(camWidth, camHeight, 24);
        Camera.main.targetTexture = rt;
        var snapShot = new Texture2D(camWidth, camHeight, TextureFormat.RGB24, false);
        Camera.main.Render();
        RenderTexture.active = rt;
        snapShot.ReadPixels(new Rect(0, 0, camWidth, camHeight), 0, 0);
        Camera.main.targetTexture = null;
        RenderTexture.active = null;
        Object.Destroy(rt);
        var bytes = snapShot.EncodeToPNG();

        var form = new List<IMultipartFormSection> {new MultipartFormDataSection("image", bytes)};

        var www = UnityWebRequest.Post("https://api.imgur.com/3/image", form);

        www.SetRequestHeader("authorization", "Client-ID c1e604cb4c2b81f");
        yield return www.Send();
        Debug.Log(www.downloadHandler.text);