Help with using photos for web

I would like to use some photos I have stored in iphoto library, but I need to reduce them. Reading the help guide, it is indicate to export to web page. But in that case it opens automatically a new web page. How can I export to a page that I have already created?
Moreover what I do not understand is how can I reduce the dimension of the photo without changing the quality? This can be done in iphoto with export?
I am a little bit confused...
thanks for help

Yep you have answered your own question.
Choose export, file export and click the scale images option, and original options (assuming they are already jpegs).
(As you say exporting as webpage creates the page for you but can create images in two sizes (thumnails and main) which can be helpful. The downside the that the filenames for the images as numeric. 1.jpg, 2.jpg etc.)
While a longer process and with no direct control over file size and quality I prefer the file export option as above. It preserves filenames and quality is fine.
and do choose 'original' as you should avoid re-saving a jpeg as a jpeg (that causes a quality reduction)
You will need to manually bring the images into your web pages (save the exported images into your site folder and bring each one into your page individually) unless you are very clever with filenaming!
Hope this helps.
M.

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...I have been told that you are not supposed to embed the ICC profile in the document when saving for web because most monitors are untagged.
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