jwb Wrote:Well, I experimented with simply resizing in Picture Manager, resized this one to 15% of the original and got something not much better than what I had before, but at 187K I think it's a little too big. How are other guys getting something larger overall but half as many KB?
Never used Microsoft Office Picture Manager before, but let's make a quick test.
First etst, using freeware program GIMP (GNU Image Processor)
Opens copy of original file (1.44 MB, 2560x1920)
Image | Scale image - select size 800 x 600
File | Save As JPG
GIMP suggests a default 92% compression ratio, okays that
Picture is now 800x600 pixels, 225kB - looks okay visually.
I make a new copy of the original jpg image (1.44 MB, 2560x1920)
Now Microsoft Office Picture Manager
Start Microsoft Office Picture Manager
Adds a shortcut to the directory the file is in
Finds file, right click and choose edit
In the frame on the right, I click on the icon "Home" (small house)
Choose export picture
Click on "JPEG options", choose a compression ratio of 92%, back
Has a section for "Export using this size" where I can choose size 800 x 600 pixels
Clicks OK to export
Okays overwriting the old file (I am working on a copy of the original)
Checking file size now - 800x600 pixels, 234 kb - visually looks okay.
Seems easy enough.
Not much difference in size here. No visual difference between the files when viewed on my screen.
If I want a smaller file, I select either a smaller file size or harder jpeg compression
Tries reducing original to size 640 x 480, saves with jpeg compression ratio 92% - file size 175 KB
Tries reducing original to size 640 x 480, saves with jpeg compression ratio 80% - file size 127 KB
Tries reducing original to size 800 x 600, saves with jpeg compression ratio 85% - file size 185 KB
Looks to me like compression works just fine in Microsoft Office Picture Manager, and that both resizing an image and compressing it will reduce file size.
Smile,
Stein