Here are some file types:
.PNG
.GIF
.PSD
.JPG
.Tiff
The file extention basically tells the computer what programme to open the file in for it to open and function correctly.
Differences between files:
.PNG (Portible Network Graphics).
- The file can have transparent spaces and the opacity can be altered.
- Interlacing is supported and develops the image faster than a GIF file.
- 'Gamma correction' allows you to change the colour and brightness specified by various monitor manufacturers.
- Images can be saved using true color as well as in the palette and gray-scale formats provided by the GIF.
- It doesn't support animated files.
- Its a compressed image file format.
- .GIFs are based on indexed colors, which is a palette of at most 256 colors.
- Quickly and easily sent as the size is greatly reduced form orginal size.
- Can support animation and are good for icons but lack the size for high quality images.
.PSD (Photoshop Document).
- Supports layered files and allows for work to done to the files individual layers even after the file has been saved.
- Once the image is finished, it can be flattened and be converted to .JPG, .GIF or .Tiff to allow it to be shared easier via the web.
- Once the image has been flattened, it cannot retrive the different layers.
.JPG (JPEG Joint Photographics Experts Group).
- Often used to format files that do not require a lot of space for detail.
- .JPG files lose detail as they are converted from whatever they were to .JPG.
- Images with this format have often been taken with a digital camera.
- Whilst the size compression does lose detail from the image, .JPG doesn't loos as much detail as .GIF files.
.Tiff (Tagged Image File Format).
- Used for images in graphic design as it can be saved without compression.
- Often used for print design or desktop publishing, as they can store large high quality images.
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