no. It can also increase the file size in very few cases, because it stores a header with information used in the decompression process.
File Compression
Which compression type using in BMP image file? The BMP image file normally doesn't use any compression at all. This is why usually they are large files and are not used on the web.
File compression
Using compression.
File compression uses software algorithms to reduce file size by reducing the bit-rate of a file. Lossy compression takes it a bit further and lowers the quality of thr file to make it even smaller. Lossy compression is commonly used for media files, but would not be appropriate for other types of files.
Image Compression reduces the file size of an image without changing any part of the image. Image Editing involves changes to colour, addition or subtraction of element of and image that may or may not change the size of the image
Image compression, sound compression, use of text (breaking up text causes the file size to increase).
It all depends on the type of digital file you are using. Most printers will do the reduction or enlargement in house. If the printer requires the file to be the exact size of the finished piece reducing the actual physical size of the file is quite simple, with the proper software. Another advantage is that no image quality will be lost when the file is reduced in size, whether it is a jpg, eps or tiff. From within Photoshop choose Image Size from the menu and reduce the size there. You can also scale the image in Photoshop or Illustrator. To reduce the file size you will need to 'stuff' or 'zip' the file with compression software.
There is no upper limit when enlarging an image. The limiting factor is the quality loss. When enlarging you will always loose quality. Note: the filesize for a JPEG does not tell much about it since JPEG uses a lossy compression algorithm - i.e. the resulting file size is depending a lot on the original image and the compression level.
it's an image file on your computer. when it comes to pictures, there also .jpegs and .bins
Tiffs typically produce larger files because their compression format maintains all the image data. Jpegs are "lossy," meaning their compression format works by discarding some of the data, reducing the number of colors stored in the image.
In the past there are people who experimented with zip files to store them as images. None of the current compression software supports this. A zip file can contain a image file.