9 Release Date: Safari

For developers, a new mode in the Develop menu allowed them to preview how websites would look on various iOS devices and screen resolutions.

The Safari Reader received new fonts and background themes (such as Sepia and Night mode) to improve the reading experience. System Compatibility safari 9 release date

If you are a Chrome user, you likely take pinned tabs for granted. But in 2015, Safari didn't have them. The implementation by Apple was unique; pinned tabs would stay active and alive on the far left of the tab bar, taking up minimal space and remembering their place even if you closed the window. It was a nod to the "power user"—people who live in their email, Slack, or Twitter feeds all day. For developers, a new mode in the Develop

While Safari 9 was bundled with El Capitan, it was one of the first times Apple maintained a unified version across multiple legacy operating systems. Operating System Availability OS X Yosemite (10.10.5) Available via Mac App Store OS X Mavericks (10.9.5) Available via Mac App Store iOS 9 Included in the OS update Security and Legacy Status But in 2015, Safari didn't have them