But in my experience, the system default has worked fine in most cases. So consider carefully the reason you might have for changing it. Skip to content A page file can significantly impact the way your Windows operating system performs. FTP programs, used to transfer files to websites, almost all show the size of files by default, although usually in bytes, so you need to split these large numbers by eye into groups of three digits to see which are measured in B or kB and which in MB.
A three-minute MP3 audio at a very high bitrate kpbs ; 1 minute of low-resolution video, or of streaming from a video-sharing site; all the Wikileaks cablegate files released by mid-Dec ; a page PDF which might include a badly-chosen cover photo; the complete works of Shakespeare uncompressed.
As you may gather, one of the main factors in determining how cumbersome a file is is the quality or resolution of images. A dpi dots or pixels per inch image added to a word-processor or PDF file takes up about four times as much space as a dpi image because the resolution applies both horizontally and vertically. Now, if you need to share an image with someone online either on a website or by email, and you're not expecting them to print it out, nor to expect perfect copy or zoom in to examine minute detail, then it's only going to be shown on the screen.
So it's worth knowing a bit about screen resolutions. A typical flat-panel screen is pixels wide. However, some may be smaller or lower resolution, and allowing for navigation bars and margins on the side of a screen, and also that a visitor's web browser might not occupy the full size of the screen, there's probably little point in uploading an image that is wider than pixels.
Anything larger and the the viewer may only see the top left-hand corner of the image and have to scroll to see the rest. Scans or digital photos may be 20 times that size and yet appear no sharper to the recipient. So if you have such an image, you will need to resize it or scale down before you upload or publish.
A common mistake when creating a web page is to try to resize the image on the page by changing the image element properties. Some content-management systems, such as Drupal, may include an image module that automatically creates a scaled copy of the image at the size you specify, but if you're editing pages in a web authoring program like Dreamweaver or KompoZer, the chances are you're forcing every web site visitor to download far too much information and then make their computer work quite hard at doing the downscaling.
So it's best to try to keep photographic images, even banners, to no more than pixels across and perhaps no more than 50 KB. Any image-editing software, such as the open source GIMP , allows you to easily produce a smaller file. Simply open the large file, choose an "image size" or "scale image" function, select the width you want, remembering that px is often full-width, and save in an appropriate file format.
The other thing to be aware of with images is the different advantages of the different kinds of compression and file format. As mentioned above, JPEG files also called. They store a full range of colours but do lose a certain amount of fine detail; there is a balance between the file size and the acceptable amount of distortion. Mostly you will want a mid-range JPEG quality around 50 out of The other main formats used on the web are PNG or the older GIF , and these are "lossless" formats that are not suitable for photographs or full-colour scans of artwork.
However, for images such as line drawings or logos that have been created on a computer in the first place, choosing PNG allows areas of flat colour to be compressed very efficiently and maintain the sharp edges of a design that JPEG would lose.
PNG also tends to be used for smaller images, as for larger images the size reduction from using JPEG is much more important. An A4 paper fits in a C4 envelope without having to fold the paper. When you fold an A4 paper, it works in a C5 envelope. With the A series of paper sizes, the next size is twice as large or small. The ratio of the A-standard between the long and short side is If you fold a sheet of paper horizontally into two equal pieces, two pieces with the same ratio are created.
An A4 is half the size of an A3. When you fold an A4, you have twice an A5. Healthcare and Life Sciences. Internet of Things IoT. Enabling Remote Work. Small and Medium Business. Humans of IT. Green Tech. MVP Award Program. Video Hub Azure. Microsoft Business. Microsoft Enterprise. Browse All Community Hubs. Turn on suggestions.
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