Internet Explorer Flicker Test - I

This page demonstrates the IE image flicker effect, solutions to which have been discussed here. Click here to load an almost identical page. When viewed in IE the first image will flicker significantly while the other two will repaint faster.

Watzmann - near Berchtesgaden

Watzmann & Family - near Berchtesgaden

This image is downloaded from the /tricks/ directory which has no .htaccess. In the absence of explicit expiry information IE will download it each time resulting in significant flicker.

Salt Lake Storm

Storm in Salt Lake City

This image is downloaded from the /images/ directory which has .htaccess setup to stamp images with an expiry date 30 days after the download date. IE will use the cached copy of this image - i.e. little or no flicker.

Portofino, Liguria, Italy

Portofino Bay - Liguria, Italy

This image is accessed via a PHP script which inserts an expiry date into the response header. IE uses the cached copy of this image so it does not flicker.

Colophon