Convert XLSX to JPG

An XLSX is one of the components of Microsoft’s office suite and it is popularly known as Excel or spreadsheet. It is compatible with Windows, Android and iOS. It stores the data in worksheets and each worksheet comprises of a number of cells (boxes) that are organized in a grid of columns and rows. These cells in actual store the data and every cell has its own identity (numbered row and letter named column). This identification of each cell is used to write formulae and to perform other arithmetical operations. They can also refer to other cells to get the values. The data can be formatted in this the same way, as we do in Microsoft word. It may also contain charts, histograms and line graphs; etc and these can be displayed using three-dimensional graphics. Boxes can be auto-filled by just dragging and expanding the selection box which one wants to copy.

It is the successor to XLS as this predecessor only stores data using a single binary file whereas XLSX uses Open XML format in which files and folders are stored separately under a ZIP compression. The graphs that are generated can be attached to the current sheet or can be added to the different sheet. Besides this, there are some add-ins which can be used in Excel sheets. It includes, Analysis ToolPak for Statistical and Engineering data analysis), Analysis ToolPak VBA (Visual basics of the application comes into act here), Euro Currency Tools (To convert and format Euro) and Solver Add-in (for optimization and equation solving). Furthermore, including Version 12.0 and later ones, can have 1048576 rows and 16384 columns.

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.

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.