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Images, Graphic Design, and Digital Photography Discussion of all things graphics.

.jpg? .jpeg?


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BurntSmore

 
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What in the world is the difference between .jpg and .jpeg files? And which one do you guys think is better? What extension (not only .jpg or .jpeg; all extensions) should I use for my pictures? Thanks!
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trpnmonkey41

 
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No difference between jpg and jpeg they mean the same thing its just the extension people decide to use (Kind of like .htm and .html).

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BurntSmore

 
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What is the best extension to use (out of all available ones)?
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Kokopelli
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It does not matter, whichever you like. I use jpg out of habit in order to comply with the 8.3 file name format.

Also you seem to be getting file format and file extension confused.
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BurntSmore

 
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What's the 8.3 file name format, and what's the difference between file format and extension? :dummy: :dummy:
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Kokopelli
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8.3 means no more than 8 characters in the first part of the name (before the ".") and the extension should not exceed 3 characters. It is a hold over from DOS, which could not exceed those limits.

File name is just that, the name of the file. File format is how the data in the file is structured. The extension is an indicator of what the format of a file is, but not a gaurantee. A jar labeled "Sugar" tends to suggest that there is sugar inside, but if you wanted to you could put flour in it, or sand for that matter. It just makes the most sense to put sugar in a jar labeled sugar, flour in a jar labeled flour, etc.

Generally for photographs jpeg format is a good compromise between size and quality. On the high end for digital photographs is RAW. Some of the professionals on the board can probably break down the various formats better than I.

EDIT: So when you ask what extension to use, jpg, jpeg, or other it is a little off. I would use "jpg" for jpeg files, "bmp" for bitmaps, "gif" for GIFS, "doc" for Word documents, etc... As to which file format to use, the paragraph above is my answer to that.
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Macman

 
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yea, you could have files pic.jpg, pic.jpeg, and they're the same, though I believe mac os x only supports up to 3 characters in the extension.
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meltbanana314
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Originally Posted by Macman
yea, you could have files pic.jpg, pic.jpeg, and they're the same, though I believe mac os x only supports up to 3 characters in the extension.
Then how come I have .opml and .mpeg files scattered on my desktop?
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Macman

 
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never heard of .opml before, as far as the mpgs, they'd only be there if you put them there.
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technologist

 
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OS X supports arbitrarily long extensions (for example, .webloc for web bookmark files or .plist for preferences files) or even no extension at all (for files that have Classic Type/Creator codes embedded.)

Current versions of Windows also support long extensions, though I'm not sure how long. Previous versions were more picky; hence *******ized extensions like .jpg and .htm
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meltbanana314
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.opml is the standard format for importing and exporting RSS/Atom feeds to and from applications such as NetNewsWire or PulpFiction.

I'm actually trying to start a new trend by asking people what RSS feeds they read (sort of akin to the whole "What's On Your Dock?" Giles Turnbull started)

(and when I was reffering to them being on my desktop, I didn't mean "why are they there" - i meant "if OS X only has the capability to show three character extensions, then i must be imagining the files on my computer with four character extensions.")
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