| 10:26 pm on Dec 1, 2007 (gmt 0)|
|Amount of colours, transparency on or off, |
You can figure that out for .gif by opening it with a decent editor.
As for .jpg just a suggestion but have you tried an advanced exif reader like exifer? Exif data can be quite extensive but I don't know if image editing applications save things like that and for the web they usually drop it all together for a smaller file size.
| 4:05 pm on Dec 3, 2007 (gmt 0)|
Is there anything in particular you were hoping to achieve? The learning curve for image optimisation isn't too steep.
| 5:05 pm on Dec 3, 2007 (gmt 0)|
I do understand how to optimize images in various formats but what I was hoping to achieve is to find out what settings were used for a previously optimized image. I have a few images from a client and I would like to know what settings the previous web developers were using i.e. amount of colours, transparency on or off, dithering etc etc etc
| 8:41 pm on Dec 3, 2007 (gmt 0)|
Well, it's not an optimal solution, and later versions of Photoshop may have a better way. If you open any image in Photoshop and go immediately to "Save As," it will display the current jpg settings. For .gif/png, you convert the image to RGB then switch back to Indexed color, it will display the index it was at before you opened it.
| 9:09 pm on Dec 3, 2007 (gmt 0)|
That's a good way to find out how many colours for the gif/png but the jpeg method doesn't work if the file was previously saved using the Save For Web option in Photoshop. Thanks for your help though.