HTML5 banner - Ad sizes

Plus, unlike Flash—which both created and compressed each banner ad file into a simple SFW file—HTML5 banner ads are created with HTML, CSS, and JavaScript. Multiple video and audio files of varying sizes must be included in the final package to publishers in order to ensure compatibility on all browsers and devices. Plus, when you consider that some custom brand fonts alone can weigh up to 300K, you can see the banner size problems that can arise.

We work expertly with HTML5 in the creation of our rich media solutions so we wanted to address this complaint with a few tips for reducing HTML5 banner size.