One of the useful features of Craigslist is that they allow you to upload up to eight digital photos to most classified ads for free.
Conveniently, they also allow the use of HTML code in the ad descriptions, which makes it possible for you to include an unlimited amount of photos hosted on external sites.
If you use the built-in upload tool, Craigslist will automatically resize the images for you.
If you host them on an external site, you will need to resize them yourself.
The resizing can be accomplished using HTML code.
Visit the Craigslist Web site and click the "post to classifieds" link Below.
Follow the prompts and enter in a title and description for your ad.
Click the "Add images" link when prompted if you want to upload some images with Craigslist's built-in uploading tool.
These will be automatically resized for you.
Continue reading if you want to add and resize your own images.
Go to your image host, such as Photobucket, ImageShack or Flickr, in a new browser window or tab and open the album containing the images you'd like to use.
Click or right-click on the images one at a time and choose the option (if necessary) to view the direct Web addresses for them.
This address is what you'll link to in the Craigslist ad. Type the following HTML code into the ad's Description box (a few lines below the text description you already typed in):
<img src="" height="" width="" />
Inside the "src" quotes, copy and paste the Web address for the first image you'd like to add to your ad.
Inside the "height" and "width" quotes, type in the height and width (in pixels) you'd like to resize it to.
<img src="http://www.site/image.jpg" height="200" width="300" />
Repeat the previous step for any additional images you'd like to add to your Craigslist ad.
When done, follow the prompts on the page to save and post your Craigslist ad.
http://www.craigslist.org/about/help/faq - pictures