Evite downloa de arquivos que você já tem!
Sometimes you might forget that you have already downloaded certain files which creates duplicates in your hard drive. This small and lightweight extension helps you to avoid these duplicate downloads and can even save you some bandwidth.
When initiating a download the extension will check if the file already exists. If it does exist, you will be provided with a few options whether you want to download it anyway or open the already existing file.
Simple and elegant!