Getting Rid of Halos

Images that are imported to Web pages can have a halo effect if you are not careful. This is because the GIF format does not support more than a single transparent color, and in the anti-aliasing process the dithered colors can remain.

To eliminate the halo, paste the image into a Photoshop rectangular image with a background of the same background color as the final Web page. Photoshop will then dither the image to that background. Then save the image with the background (using the Web palette) and layer this into your Web page with the HTML editor.

Note: Try if possible to always anti-alias images and text pasted to a Web page from Photoshop.