22Slides uses HTML5 rather than Flash because:
- HTML5 is viewable by almost all devices without the need for plugins.
- HTML5 usually allows for smaller file sizes and downloads much faster than Flash.
- HTML5 is the industry standard method for delivering websites for the foreseeable future, while Flash support is rapidly declining.
- Flash isn’t supported by most mobile devices, including iPhones and iPads.
- Flash runs poorly on many devices, while HTML5’s performance continues to improve.