You need a software program that lets you work with graphics, such as Irfanview
Irfanview is a free program and can be found at"
There are two ways to reduce the jpeg file size.
Examples will be based on using Irfanview.
Most graphics programs work the same.
1. Reduce the size of the picture (i.e. resize 800x600 to 640x480).
With .jpg picture displayed in Irfanview, click "Image" then click "Resize/Resample".
2. Increase the compression of the file.
With .jpg picture displayed in Irfanview, click "File" then click "Save As".
Look for the "Save Quality' slider to your right
Move the "Save Quality" slider to 50.
Now change the name of the file (If the name was horse, change it to horse50).
Click "Save" button.
Now use Windows Explorer to navigate to the folder where you have the "horse.jpg" and "horse50.jpg"
Right click on each file and click "Properties".
Compare the size of the files and you will find that "horse50" will be smaller.
If it is not small enough, go back to Irfanview and load "horse.jpg" again and this time use a "Save Quality" smaller that 50.
Since .jpg compression is lossy, if you over-compress the picture it will effect the visual quality of the picture. Most pictures can be compressed to between 30 and 50 with little visual change.
There is no absolute setting since it depends upon the complexity of the picture. (i.e. A picture with a large area of blue sky will compress further). A picture with lots of surfaces, such as tree leaves, should not be compressed as much.
Is there a simple way to make the JPG files smaller so I can attach them to e-mails?