JPG and JPEG Formats
The JPG and JPEG formats are actually not different. The only thing that distinguishes them is the number of characters used in the extension. JPG does not exist because previous versions of Windows (MS-DOS 8.3 and FAT-16 file system) required file names with a three-letter extension.
To convert photos to JPG, follow these steps:
- Access the "File" menu and click the button next to "Save As".
- A list of image formats, including JPEG, will be displayed.
- Choose the "JPEG" option.
Lossy Data Compression
In the field of computer science and telecommunications, lossy data compression is a class of algorithms that causes the loss of some original information during the compression and decompression of data.
File Extensions
Windows indicates the extension of a file as the type and it is formed by three letters preceded by a dot. For example, a PDF file will have the extension .pdf, while a Word file can have an extension like .doc or others.
Extensions for Word Text Files
The available extensions for a Word text file are:
- DOC: This format is primarily used with Microsoft Word.
- DOCX: This format, introduced with Word 2007, allows the creation of files using the Open XML format.
Video File Extensions
The following are the extensions for video files:
| Description and Extension Format |
|---|
| .mov: Created for Quick Time Player by Apple. |
| .mp4: Designed for MPEG4 content. |
Types of Audio Files
There are three types of audio files:
- Uncompressed: These files do not lose any information as they retain the original data intact.
- Lossless: These files also do not lose any information, but they achieve compression by removing redundancy.
- Lossy: These files remove some data from the original file, resulting in a smaller file size.
Meaning of "File"
In computer science, the term "file" refers to a container of data or information in digital format, generally stored on a well-organized digital storage medium. The term can be translated from English as "archive" or "document".
Formats Used in the Text
The formats used in the text are:
- CTXT: A commonly used format for standard text documents without text formatting.
- DOC and DOCX: These formats are primarily produced by Microsoft Word.
Image File Extensions
There are various file extensions used for image files. Some common extensions include:
- RAW
- PSD
- TIFF
- PNG
- EPS
- BMP
- AI
- GIF
- PICT
- SVG
- JPEG
Compression Behavior of JPEG
JPEG compression saves both low-frequency and high-frequency components. The amount of data saved is proportional to the file quality.
Image Formats with Smaller File Size
The GIF and PNG formats do not have any loss and compress the image to maintain all the information. They occupy less space, similar to a .zip file that returns the original file once decompressed.
Converting PDF to JPG
To convert a PDF file to JPG, follow these steps using Acrobat:
- Open the PDF file in Acrobat.
- Click on the "Export PDF" tool in the right pane.
- Choose the image export format and select JPEG.
- Select the "Export" option.
- Choose the location to save the file and click "Save".
Meaning of Losing Money
In the field of computer science and telecommunications, lossy data compression is a class of compression algorithms that causes the loss of some original information during the compression and decompression of the represented data.
Video File Extension
The file extension for a video file depends on the format used. For example:
- .mov: Developed by Apple for Quick Time Player.
- .mp4: A contemporary video format designed to support MPEG4 content.
Text Formats
The following text formats are commonly used:
- TXT: A common format for conventional text documents without text formatting.
- DOC and DOCX: These formats are owned by Microsoft and primarily produced by Microsoft Word.