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Before I upload them, I put them through a batch process as a saved action in Photoshop to bring them down to 600 x 800 and optimized for the web (JPG Medium, I think). It will aslo save them with web friendly filenames.
If the images are all optimized for the web, which they should be if you are the lowliest of low web designers
I disagree. If you have 20 100kb files, granted the images could be optimized for web, but your naivety lies in the fact that just 20 100kb files would be 2mb worth of download time just to SEE the thumbs. That’d suck. At a FULL 56K that would take your viewers almost a minute to download. Thumbs would be about 5-10k... at 10k, 20 of them would take about 5 seconds to download. “Even the lowliest of web designers should know that the max page download page-size should be between 35-80K... max...”
I guess you don’t care about the person on the other end, and keeping them coming back to your site?
Using browser resize an image is bad practice
I should have explained that further (this is opionion). Letting the browser compress your image defeats the purpose of thumnails. They are supposed to be quick to download so the user gets to choose whether they want to see more. The file size will remain the same if you alter the dimensions.
Also image quality is much diminshed when using browsers to resize an image, this of course will not effect a transparent spacer, but for a quality photo using the browswer just seems lazy. The compression algorythym used by browsers are simple at best. An image editor will allow much greater compression, less visual degredation and you can choose the level of optimisation. Also you can save this as a batch/command set it running and make the tea.
Thank you for enlightening me ;0) To be honest, I was unaware, although I thought the numbers sounded too low... It just further proves the point that, on a page with multiple photos, thumbs are a good thing
I have just learned to start using ImageMagick (for php enabled sites) btw, works wonderfully! Take a little longer to load than normal thumbs, but REALLY dynamic in allowing me to choose the photos I want to make thumbs out of.