TXT to JPG
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| - Information about TXT |
| Id |
| 23 |
| File extension |
| txt |
| File category |
| Document file |
| Stands for |
| Raw text file |
| Developer |
| Microsoft |
| Overview |
| TXT is the file format which is used to store standard text where information is put together with no special effects. A computer file system is used to pile up the data. This unformatted text is just a series of text where only the font style can be altered. This is especially used to make notes in which the appearance of things do not matter. Microsoft Notepad and Apple TextEdit are the two examples of this plain text software. The corrupted data can be retrieved with ease and one can continue his work on the same file. The main advantages of this are the sequence of bytes in storage (endianness) and padding bytes that is inserting of empty bytes between memory addresses. Contrary, entropy is a demerit in this format which means that it takes more storage space than required. |
| Technical description |
| In TXT, there is no need for additional metadata, the reader is only expected to know the character set. ASCII is the most compatible in this case where it comprises of letters, numbers and symbols or special characters. In Microsoft Windows and MS-DOS, Carriage return (CR) and Line feed (LF) are the two characters that are used to separate the text of each line. CR act as a control character which resets itself to the beginning of the current line text. On the other hand, LF indicates the end of a line of the text and it moves to the opening of a new line. These files are especially used to keep the source code where file name suffixes indicate the programming language in which source is penned. |
| Links |
| wikipedia.org |
| - Information about JPG |
| Id |
| 38 |
| File extension |
| jpg |
| File category |
| Raster Image |
| Stands for |
| Joint photographic experts group |
| Developer |
| The JPEG group |
| Overview |
| Files stored in this format are small in size that is why they can be uploaded and downloaded with ease. It takes less time over the internet to upload and download due to smaller size which results in saving of bandwidth. This extension is compressed using a lossy algorithm that is why there can be a reduction in the quality of the photograph. It has the ability to compress the file to one-tenth of its original size. It is widely used in emails and also when images are to be posted on websites. Digital Cameras and other photographic image capture devices widely use this JPG format. The paintings and photos of realistic scenes that have smooth variations of colour can be best illustrated by this format. |
| Technical description |
| A technique used in JPEG format to compress files is lossy compression which is based on DCT (Discrete Cosine Transform) as it is the most practical Mathematical operation. The DCT actually converts each frame of the video from the spatial domain to a frequency/transform domain. It discards the information of high frequency that has sharp transitions in intensity as well as in colour hue. Furthermore, this standard defines a codec which tells how an image can be encoded into a stream of bytes and decoded back into an image. The files can be compressed in the ratio of 100:1 but that would result in the poor quality of an image. Therefore, to retain the quality of a photo, a file should be compressed till 20:1 ratio not more than that. |
| Links |
| wikipedia.org |
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