Internet Explorer 5 5 Service Pack 1 -

This version was the final one to offer a "Compatibility Mode" that allowed users to run IE 4 side-by-side with IE 5.x for testing purposes. Performance and Developer Value

Released in late 2000, IE 5.5 SP1 functioned as a "polishing" update. While version 5.5 itself introduced significant user-facing features like , SP1 was largely a maintenance release focused on bug fixes and security hardening. It was the last version to support legacy systems like Windows 95 and Windows NT 4.0 (SP3–SP6) . Key Features & Enhancements Internet Explorer 5 5 Service Pack 1

SP1 standardized high-level security for 128-bit encryption, which was vital for the growing trend of online banking and e-commerce. This version was the final one to offer

It expanded support for Dynamic HTML (DHTML) and CSS Level 1 , giving web designers more control over page layouts. It was the last version to support legacy

This was the standout addition for general users, finally allowing them to see exactly how a webpage would look on paper before printing.