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- Why Same File Shows Different Sizes in Different Operating Systems - Ask Ubuntu
Pages appearing different sizes in multi page PDF. I have created a PDF document by combining TIFF files. I want each page to display at the same size when scrolling through the document, but there is considerable variation in page sizes. Oct 27, · Different size of folders when copied from one source and pasted to another Hello, I'm hoping someone can help me figure out why a folder size can be different when it is copied from one source and pasted to another i.e. hard drive to an external drive? Download Image Files in Different Formats and Sizes Downloading an image file in different sizes: Preset Option: If a Main Admin has created a preset template to use for specific download purposes, you may select it from the preset list. This will auto-select a file .
Why are files sizes different after download
Every file on a computer uses a certain amount of resources when sent over the internet or stored, why are files sizes different after download. Keeping mind of your kilobytes kB and megabytes MB can prevent problems and produce a smoother online experience. This GreenNet guide is here to help you tell the whales from the minnows.
Computer resources do have physical limits why are files sizes different after download their capacities, even if the idea of computer resources can be scaled up indefinitely. So we really want why are files sizes different after download think of the sizes of files in a tidy, minimalist way and thereby make the most of the resources we already have.
Although most people nowadays seem to have internet connections which cope easily with audio, video and high-resolution images, it is worth remembering that many people do not. If care why are files sizes different after download not taken, it is possible to produce a large media file that actually conveys no more information to people than a file a tenth or a hundredth of the size.
Software packages that consume excessive memory and disk space for their function are sometimes called "bloatware", and one could apply a similar aesthetic to media files. For instance, making transcripts available on a web site might help people to find the information they are looking for more quickly than having audio or video interviews alone.
Similarly, you might want to consider whether it's easier for people, including those with visual impairments, to read the date and time of an event from a text email, why are files sizes different after download, or to have to open a large PDF or image file of a poster. By the way, the Microsoft term "document" for files never really caught on. The two words are synonymous in this context.
So how big is too big? Obviously, it depends on the context. If you are signing off on a report that is intended to go to the printers, then emailing a 10MB PDF attachment to a few people asking for final comments is completely reasonable. What would be unreasonable is then to email the finished 10MB file to your list of supporters.
Instead, you could create a lower-resolution or even text-only version of the PDF, put that on your website, and email a link to the file, perhaps with a little indicator of the file size like "[1. Why worry about file size when it only takes someone on high-speed broadband 15 seconds to download a 10MB file?
A 10MB download on dial-up might take nearly an hour. And older broadband connections or in rural areas the download speed might be kbps and the transfer still takes several minutes. Even on the fastest broadband, uploading is often limited to kbps, why are files sizes different after download, so if you expect a 10MB file to be retransmitted, that is likely to be slower than expected.
A large file on its own may be no problem, but when multiplied by the size of the audience it can cause bandwidth problems that affect internet service providers and other users. GreenNet doesn't limit bandwidth, why are files sizes different after download it is subject to a "fair use" policy.
Once downloaded, larger files are harder to manipulate. Large emails can slow down access to an email inbox, why are files sizes different after download, and will increase the size of mailbox files on the recipients' computers. Large image files on a web page often have to be scaled by the browser software and mean navigating and scrolling through the page can be slow and erratic.
There are other things that can cause slow "rendering" of a page, such as Javascript or a complex website "back-end", why are files sizes different after download. Then there's the backup. If someone intends to keep the document or image or archives all email, it might be replicated on backup media many times over. People may also be reluctant to keep files that consume more storage than they are worth, and so delete them.
It's still 15 seconds, even if it's a background download. Some of us get impatient waiting for the computer for more than half a second. In short, the "kilo-", "mega-", why are files sizes different after download, "giga-" and "tera-" prefixes are similar to their use in any other unit of measurement, like metres or watts:.
To confuse matters, "1 KB" or "1K" is used by many computer people to mean bytes, which is a convenient number in binary, and memory or disk is often allocated by operating systems in units of To avoid this confusion with standard scientific usage of "mega-" and so on, the terms "kibibyte" KiB"mebibyte" MiB"gibibyte" GiB and "tebibyte" are now recommended for these non-decimal technical units, why are files sizes different after download.
You might still feel short-changed if you bought why are files sizes different after download 4GB flash drive and it's only 3. For simplicity this article will stick to round s and kilobytes [kB]. File or attachment size is usually easily accessible, if not already prominent. In Windowsright-clicking on any file, folder, or drive and choosing "Properties In an Explorer window, you can select "Details" from the "View" menu; or in a file open or save dialogue box there is a "View" button from which you can also choose "Details".
If you then click on the word "Size" at the top of the column, you can group together the largest files in a folder. Most email programs such as Windows Mail or Thunderbird always show the size of attachments next why are files sizes different after download the file name.
In Thunderbird and many other programs you can click on the columns button up the top right of a list to add a column showing the size of each item. 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 why are files sizes different after download 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 GIMPallows 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 GIFand 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. The following images illustrate the reason JPG is not used for small files with only a handful of colours:. When you attach a file to an email, it will usually be converted to "base 64" text, which can only represent 6 bits per character. This means a 1 MB file will produce an email of about 1. Data transfer speeds can be measured in bits usually for the rating of the connection itself or bytes more commonly for actual download or upload speeds, and shown with a capital "B".
The conversion factor is usually 8 bits to 1 byte excluding now-rare parity or stop bits. So an old dial-up modem might upload and download at 32kbps, but that is only 4 kBps or bytes per second. To summarise, thinking early on about making a file of a size that is easy to transmit and convenient for the recipient can save lots of people lots of time and storage later on.
Not sure if what you want is possible? Or if you want to talk to a real human right away, you can call us on:, why are files sizes different after download. Skip to main content. Search form Search. Client area Contact us Webmail. Understanding file sizes.
What do each of the units of computer storage actually mean? How do I see file sizes? Note that this may betimes the size of the equivalent plain text. The kind of mailbox size or. The following images illustrate the reason JPG is not used for small files with only a handful of colours: Close-up of GreenNet logo as PNG why are files sizes different after download slightly, but with "hard edges" Close-up of GreenNet logo with JPEG quality of 20 See also: Techsoup article explaining GIF, PNG and JPEG So, in other words, for internet usage: use PNG or GIF for buttons, line-art, why are files sizes different after download, diagrams, most logos with sharp edges, and maybe completely black-and-white things like scanned text; scale down if wider than px convert to indexed colour, and choose an adaptive palette if offered, with the smallest number of colours that appear 64 is often plenty use maximum compression for large, intricate diagrams and line-art, you might consider the new SVG scalable vector graphics format, which is supported by Firefox 2 and Internet Explorer 9 and later.
Or if you want to talk to a real human right away, you can call us on: A single keystroke or non-accented character; a number from 0 to Half a page of unformatted text; a very short email; an icon or small button image. A 5-page word-processor document; a typical HTML web page; traditionally, the maximum recommended size for an image on a web page maybe x pixels JPEG. The maximum recommended total of all the elements on a single web page, including images and HTML some authorities say 30 or 40 kB instead.
A 5-page word-processor document including a badly-chosen letterhead or logo image; a reasonable size for a PDF document someone might choose to download; two x JPEG photos from a smartphone, too large for inline use in a web page. Maximum why are files sizes different after download of an email that you can expect all recipients to receive. Maximum size of an email attachment received by GreenNet or GMail as of ; approximate size of the volume edition of Encyclopaedia Britannica. PST file size at which corruption becomes more likely.
Typical hard drive size on a computer as of doubles about every 2 years.
How to Export Your Videos in HIGH QUALITY with a LOWER FILE SIZE (Adobe Premiere Pro CC 2019)
, time: 5:14Why are files sizes different after download
Why Same File Shows Different Sizes in Different Operating Systems. Ask Question Asked 6 years, 5 months ago. Also when I download files from internet they change once downloaded in Ubuntu but do not change in Windows. Can Windows File System files show different size after being copied; Why would ISO file sizes be different in. Oct 27, · Different size of folders when copied from one source and pasted to another Hello, I'm hoping someone can help me figure out why a folder size can be different when it is copied from one source and pasted to another i.e. hard drive to an external drive? Nov 02, · Why is File size smaller after copyd to back up drive???? Can any one please help why is file smaller after copyd it to a back up hard drive i thought that to copy files was a % copy, also does this affect image quality for long term storage? Depending on what filesystem is used and how it has been set up (what the block size is) the.
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