Here's our picture open in iPhoto. iPhoto is bundled with every new Mac. It's part of the iLife suite. If for some reason you have a Mac and don't have the iLife suite then go and buy it! A full version costs £55 and contains 5 beautiful applications. There will be at least one that you don't use (for me it's Garage Band) but there will be at least one application that you can't live without. (In the screenshot I've deliberately blurred the album names since they contain client names - I use iPhoto every day for viewing and displaying pictures.)
In the introduction I said that iPhoto was “stupid easy” to resize pictures for the web. Here's the easy bit.
Select your pictures and choose “export” (or hit Cmd-Shift-E). Here's the dialogue you get. (I have a bunch of extensions to iPhoto installed - you may not get all the tabs on your copy)
Choose your format (jpg) and select scale images and enter one of the dimensions. Hit export - job done!
Here's the stupid bit - there is no way to set the jpeg compression ratio. Usually it's OK. iPhoto chooses a good balance of file size versus quality but if you don't like it you're out of luck! Time to trial Photoshop Elements or Graphic Converter…
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