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To change the file size you can try to archive it using zip or a rar. They are designed to compress things. However the savings in size for images are limited.

More effectively is to change the image format or to reduce its resolution (reduce width & size of the image). See related questions for more details.

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12y ago
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There are many free applications out there. For Windows, my favourite is <a href="http://www.onlinetools.org/tools/zips/easythumbs.zip">EasyThumbs</a>. It lets you resize many pictures at once if you need to.

For Mac, you can use Automator, a program that comes with Mac OS X. Here's an article about how to resize pictures with Automator: <a href="http://atkinsfamily.org/2008/01/resize-images-using-automator-and-mac-OS-x/">click here</a>.

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12y ago

In Photoshop from Image > Image Size.

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Q: How do you change the resolution of a jpeg?
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How do you decrease the size of JPEG pictures so that you can send them for example by lowering the resolution?

Go to Image &gt; Image Size. If you want to keep current Width and Height of the image uncheck Resample image then type new reolution in Resolution field. When you want to resample image (to change Width and Height to match new resolution) check Resample Image and type desired resolution in Resolution field.


How do you change a JPEG file to a bitmap file?

I think the easiest way is to open the jpeg in Paint and save it as a bitmap.


When do you use JPEG and when would you prefer PNG instead in web designing?

JPEG: for photos/images - higher resolution images are smaller in JPG format PNG: for transparency, design elements, logos, etc.


What is the disadvantage of shooting in both RAW and JPEG?

If you took a photo in RAW format it serves no purpose to also take one in JPEG format as the RAW can be processed at any later time to get JPEGs of any quality that you want. JPEG of even the best quality has insignificant resolution compared to RAW.


How do you adjust crossfire sreen resolution to wide screen?

First of all crossfire has to support the resolution that you want to change it to, to change the resolution, go on options, and you can change the resolution from there


How do you change jepg to wma?

You must be mistaken, first its jpeg, which is a graphic file, and wma is a audio file. You can't convert jpeg to wma.


Can you have a poster printed from a small JPEG image that you downloaded from the internet?

It depends on the exact resolution of the image (check the properties) but probably not as you will get image blurring and pixellation.


When a JPEG file format is comprised what happesn to the image resolution?

The quality of the photo will drop noticeably and the image may become blurry on certain pixels.


Can you change a picture from bmp to a JPEG?

Yes you can open the file with a progam then save it again with the jpeg file extention. When you save (Windows) there will be a drop down list of the file extentions that the file can be saved as or you can change the file extention manually by typing .jpeg. bare in mind some applications you may not be able to save as a jpeg but many generic apps can. you may loose some picture quality though!


How do you increase the format size of JPEG pictures to a higher resolution so that you print them?

You can artificially increase the resolution of a jpeg image in Adobe Photoshop, but there will be a loss in quality because data is "invented" through a process called interpolation. A low resolution image only contains X amount of data, and to increase its resolution, you are telling the computer software to add nonexistent data to the picture file. This is generally ok if you're only increasing the resolution by 10% for general print purposes, but to make a dramatic increase in resolution such as 72 dpi to 300 dpi, the image will most likely artifact (pixelate).The best and obvious solution would be to acquire the original image.


How Do You Change your System Resolution?

Click right on your system screen then select and click on scree resolution keyword the new window is open and screen resolution button is show then you can change your screen resolution according by you.


What are some everyday examples where an image may be magnified but resolution is not improved?

This regularly happens with computer images of the bitmap type (for example, a JPEG file), if you increase its size.