Safari Technology Preview 248 Released

paddingtone 2 hours ago |

And they recently released the Safari MCP in STP as well.

https://webkit.org/blog/18136/introducing-the-safari-mcp-ser...

Looks like the Safari MCP is also now available in the most recent Golden Gate beta part of system Safari:

https://developer.apple.com/documentation/safari-developer-t...

alberth 2 hours ago |

The team has been on a roll lately with massive fixes & improvements.

Like last months announcement of over 500 fixes.

https://webkit.org/blog/17967/news-from-wwdc26-webkit-in-saf...

bombcar 1 hour ago | |

They finally used some of those trillions to buy one (1) Claude pro subscription.

Affric 1 hour ago |

Since they nixed uBlock Origin Safari has not been a serious web browser to me. No amount of technology can make up for it.

paddingtone 1 hour ago | |

I've been using uBlock Origin Lite on Safari with no issues.

https://apps.apple.com/us/app/ublock-origin-lite/id674534269...

JSR_FDED 56 minutes ago | | |

1Blocker has been rock solid for me. Got it after reading about it on Daring Fireball and now I can’t use a Mac without it.

jvican 1 hour ago | | |

I use Adguard/wipr to great success. Why's uBlock Origin better? Also, wipr now has filtr, which provides URL filtering at the macOS level, so it's as efficient as it gets.

arijun 6 minutes ago | | |

I think the limitations are similar to the manifest v3 issues that the Chrome version has. Specifically, you (the ad blocker) send the browser a list of sites to block, instead you blocking them yourself. That means it's way harder to do clever things like scriptlet injection to find ads and get around adblock detection.

jjice 51 minutes ago | | |

I use AdGuard, Wipr, and uBlock Origin Lite on my iPhone, and uBlock Origin on desktop.

I swear there are little gaps in each that the others get, but they're very minor. When uBlock Origin Lote recently released on iOS (within the last year), I noticed a few more things blocked. I also prefer the custom element removal or uBlock and can reuse my desktop filters.

It's free, so I'd recommend adding it as an addition to the bunch.

kstrauser 50 minutes ago | | |

Seconded for Wipr. It's my favorite adblocker I've tried yet (although 1Blocker is also really nice). And if the author sells it to some creepy company, the Safari API means that the new owner can't spy on my viewing. I'm not sure how it could be materially improved by using less privacy-respecting APIs.

lapcat 26 minutes ago | |

This comment seems off-topic. Safari Technology Preview brings new features not yet released in Safari. The non-Preview version of Safari removed support for the safariextz extension format way back in 2019, 7 years ago, so your complaint is very old news and unrelated to version 248 of STP released today in 2026.

Noaidi 46 minutes ago | |

https://github.com/StevenBlack/hosts

exabrial 29 minutes ago |

Please, can we put the "Disable Javascript" menu back in the Developer menu

argee 2 hours ago |

Does this help stable Safari in any way? I have a WebKit bug I’m tracking that’s fixed in STP but not in stable and it seems like there’s no telling whether it’ll ever land.

lapcat 2 hours ago | |

It'll land eventually. They always do, though maybe months down the road. But of course Apple won't preannounce its plans, and unfortunately I'm not aware of a way to track WebKit commits in specific Safari releases.

SigmundA 1 hour ago |

Wonder if they will ever fix upload progress using XHR, pretty annoying to not be able show accurate progress to the user when using larger chunk sizes:

https://bugs.webkit.org/show_bug.cgi?id=277286

JSR_FDED 1 hour ago |

After being so disappointed by Tahoe and the whole Alan Dye era, it’s great to see Apple getting their mojo back. Golden Gate is shaping up to be a great release.

lapcat 2 hours ago |

This update fixed some web inspector bugs that I reported, but I can't use it because Safari Technology Preview inexplicably supports fewer macOS versions than Safari itself, i.e., no longer Sequoia.

kstrauser 49 minutes ago | |

I don't know, given that Safari is bundled with the OS, targeting a newer macOS seems pretty explicable.

lapcat 21 minutes ago | | |

Safari supports 3 major macOS versions. For example, Safari 26 continues to support Sonoma and Sequoia as well as Tahoe: https://support.apple.com/en-us/127685

Safari 27 will support Golden Gate, Tahoe, and Sequoia. However, Safari Technology Preview now supports only Golden Gate and Tahoe, despite the fact that the same WebKit commits will make their way into regular Safari on Sequoia. Thus, it seems that Apple is just shooting itself in the foot by failing to test sufficiently on one supported platform.

nikanj 1 hour ago |

It’s impressive that pinch-zooming reddit.com in-out-in-out has reliably crashed ios safari for at least a few years already. One would assume Apple gets telemetry from iphone default browser crashes, and reddit seems important enough to warrant a fix

lapcat 1 hour ago | |

This was fixed but then reverted. No further updates 3 months later. https://bugs.webkit.org/show_bug.cgi?id=305622

Not sure how this comment is related to Safari Technology Preview, though, which is Mac-only.

bearjaws 1 hour ago |

I cannot use a browser that is owned by a company who's financial model is dependent upon browsers being nerfed.

Apple and Google have far too many incentives to wall garden browsers, Apple due to the app store, Google due to advertising.

Independent browsers are the only safe path forward.

gausswho 31 minutes ago | |

You're correct. Which makes it all the more inscrutable that the Firefox team doesn't embrace PWA's as a differentiator.

dbbk 1 hour ago | |

What did they nerf

bearjaws 38 minutes ago | | |

Apple: adblocking, PWA being put in a odd spot, surely to be followed by a post "nobody was using it" before being removed, if they mention it at all.

Google: ad blocking

unsungNovelty 53 minutes ago | | |

PWA for starters? They are not interested in Indie devs anyways. Might as well let us use PWA no?