Your browser will display the HTML code for that page. I like to use an HTML editor because it speeds up the task of viewing and testing the pages. Both of these programs allow the user to edit the HTML directly. If you want to include images on your pages, they will need to be converted to the .jpg or .gif format. Photos are best converted to .jpg.
Line art does better as .gif.
A program such as Paint Shop Pro handles the conversion in a snap. I've also found PhotoWorks Plus sold by Seattle Film Works to be very easy to use. Yes, the Plus software be used with any image. Banners and animated GIFS are easily created with Alchemy's GIF Construction Set . Microsoft's Image Composer is an excellent image editor for creating title graphics.