JPEG Compression Levels And Tools

[ECliffordSmith]

Hi All,

I have recently setup a pbase account and this is the first time I have attempted to compress my images.

Are there any general guidelines for compressions levels and/or file size for web destined images please?

Are there any tools to perform bulk compressions?

Any tips would be very gratefully received!

Thanks,

Ed

[andybarton]

The rules that apply here are a reasonable compromise - you don't want the images to be too big, either in pixel count or file size.

So, less than 240kb and no wider/taller than 960 is what goes here. I keep my postings to a max of 800 wide, as 960 is too tall for most monitors.

GraphicConverter is the best batch-modification software I have found.

[ECliffordSmith]

Andy,

Thank you for the response. That is exactly what I was looking for.

Thanks,

Ed

[rob_x2004]

Any site you go to, it is worth having a look at what members are posting. You get a feel for what loads well and looks good, acceptable and poor, in a place with respect to file size and pixel dimensions V site setout, by right clicking and having a look at the properties of the posted images.

[ECliffordSmith]

Hi,

I tried a few tools last night and found them to be very slow and CPU intensive. Is this a common observation?

I also found that there is an image module for Python which I have installed. It provides the programatic functionality I need and I managed to convert some files in the interpreter. I now just need to put some error handling etc in and I will have a program to do this.

Has anybody else used this module?

Sorry if this is becoming more IT than photography. If so please let me know!

Thanks,

Ed

[hdg]

I use Irfan View (free ware) for batch converting. It is a surprising program.

Regards Hans

[ECliffordSmith]

Hans,

Thank you for the suggestion, I will certainly take a look at that software.

Thanks to all for their suggestions.

Ed