Moving files around on the web has become something we do all the time, whether we know what we’re doing or not: sending and receiving documents by email, applying for jobs online, sharing photos and music, and buying audio and video online. But what’s the difference between uploading, downloading, attaching and saving?
Uploading just means moving a file from the computer you are working on up to the web. Usually, the button you would click to upload a file says Upload, but it might also ask you to Browse (look around on) your computer to find a file to upload. You might upload a resume file to a job application site, upload a song file to a music sharing site, upload a photo file to Flickr or Facebook, or upload a video file to YouTube.
Downloading is the opposite of uploading: you move a file from the web down to the computer you’re working on. Again, the button usually says Download or asks you to Browse to look for a file. Downloading is also what happens when you borrow an electronic item from the library, buy music or videos from Amazon or iTunes, or save a photo from your web-based email or Facebook onto your computer.
An attachment is a file that you attach to an email message in order to send both the message and the file at the same time. The icon for an attachment is a paper clip, and that’s just what you’re doing: paper-clipping another document to the message you’ve got and sending them both along together. Most kinds of files can be attached to an email message: documents, photos, audio and video. You can also receive attachments in email from other people, which you can download onto your computer. Safety note: Do not open attachments you’re not expecting from people you don’t know or email addresses you don’t recognize. These attachments are one way that viruses get around and infect computers, and can cause you a major headache.
Saving a file means storing it on your computer or a storage device permanently. You can save a letter you’re typing, save a presentation you’ve created or save a photo from your camera onto your computer or to a USB drive. Unlike uploading, downloading or attaching, when you save a file your computer doesn’t need to be connected to the web. In fact, you need to save a document or a presentation to your computer or a USB drive before you can upload or attach it anywhere else.