Safari (WebKit)

Image	websummoner/safari
Engine	WebKitGTK 2.52.6, API series 6.0 (libwebkitgtk-6.0.so.4)
Driver	WebKitWebDriver

Caution

Real Safari runs only on macOS and iOS. This image uses WebKitGTK, the same engine Safari is built on. Functionally the two are equivalent, but fonts and pixel-for-pixel rendering can differ.

How it works

WebKitWebDriver is built from the same source tree as the engine, so driver and browser always match — there is no version-pinning problem here.

WebKitWebDriver is less complete than the Chromium and Gecko drivers, and the hub fills several gaps from outside the browser: file upload, and translating the proxy capability into the system environment WebKit actually reads. Two behaviours still show through to your tests — cookies must set sameSite, and quit() can throw even though the session ended. All four are documented on the hub’s WebKit section.

Building

./images safari -t websummoner/safari:2.52.6

Caution

WebKitGTK is compiled from source: expect one to two hours and a large memory footprint. Build it deliberately, on a machine chosen for it — not as part of a routine release run.