We present you a new tool for quick file checking using the constantly updated ArcaVir scanner. There is no need to install any extra controls or scripts – you have just to select a file and after a wile in the browser window the information about possible threats will appear. It is also possible to control archives – the scanner automatically unpacks them and displays an information about all objects contained. Infected or suspicious files are automatically transferred to ArcaBit laboratory and subjected to further analysis.