Since Safari requires a macOS app as a container for Web Extensions, is there a way to establish native messaging directly from SafariWebExtensionHandler using stdin/stdout? Or does Safari enforce a different communication mechanism? I’d like to keep the same approach as other browsers. Any guidance on making this work would be appreciated!

Is this symbol, which Safari uses to the left of the address bar, in the public SF Symbols set? What's it called?

I'm converting a Chrome Extension to a Safari Web Extension, I found it's not easy to get favicon of current tab/url natively. The tab object in Safari doesn't have favIconUrl. { 	"id": 121, 	"index": 6, 	"active": true, 	"width": 1324, 	"audible": false, 	"url": "https://github.com/", 	"mutedInfo": { 		"muted": false 	}, 	"windowId": 2, 	"title": "GitHub", 	"incognito": false, 	"pinned": false, 	"height": 935, 	"highlighted": true, 	"status": "complete" } 		 2. I didn't find Safari has similar thing like chrome://favicon 3. I found Safari's favicon caches in ~/Library/Safari/Favicon Cache/favicons but have no idea how to use them in Safari Web Extension.

I am experiencing an issue with my app, which includes a WKWebView used for displaying and playing WebRTC content (audio and video). Everything works fine on macOS, but on iOS 18, while the video is displayed correctly, there is no sound. I am wondering if this could be related to privacy permissions on iOS. Could you please clarify if there are any specific privacy permissions I need to address? I would like to confirm： AVAudioSession.sharedInstance().setCategory requires any special configuration for WebRTC audio. Are there any particular settings needed for this? My setting codes are below: try AVAudioSession.sharedInstance().setCategory(.playback, mode: .default, policy: .longFormAudio) Do the JavaScript codes in the HTML file require any special handling to ensure WebRTC audio works properly on iOS? const audioRender = document.createElement('audio'); audioRender.id = 'xxxid'; audioRender.srcObject = streamSource; audioRender.autoplay = true; audioHolder.appendChild(audioRender); Does WKWebViewConfiguration need any specific parameter adjustments to ensure audio playback in WebRTC works as expected? let webViewConfiguration = WKWebViewConfiguration() let contentController = WKUserContentController() contentController.add(self, name: "***") webViewConfiguration.userContentController = contentController webViewConfiguration.allowsInlineMediaPlayback = true

Hello, We’ve been using the CesiumJS WebGL library for several years, both on our website and within embedded WebViews in our iOS application. Since upgrading to iOS versions 18.2 and 18.3, we’ve started receiving numerous user complaints regarding application crashes on various iPad and iPhone models when loading CesiumJS. The crashes occur as soon as the 3D view initializes, and the error consistently reported is: "WebGL context lost" This issue appears to be a WebGL-related crash potentially triggered by GPU memory handling or allocation limits. However, we are not detecting any abnormal memory consumption prior to the crash, and the same setup works perfect on older iOS versions and on all Android devices and versions. Steps to Reproduce: Open: https://www.flightradar24.com/30.47,-94.84/8 Click on any aircraft icon on the map. In the aircraft details panel at the bottom, click on the “3D view” tab. On iOS 18.2 or 18.3, the page will crash shortly after initializing CesiumJS WebGL. Affected Devices: This issue is occurring across a wide range of devices, including: iPad 9th Generation iPad Pro (11-inch, 2nd Gen) iPhone SE (2020 and 2022) iPhone 11, 11 Pro iPhone XR iPhone Mini All of the above are running iOS 18.2 or 18.3. The problem does not occur on Android or previous iOS versions. Request: Has anyone else encountered similar issues with WebGL context loss after upgrading to iOS 18.2 or 18.3? Are there any known changes in memory limits or WebGL behavior in these recent iOS updates? We’d appreciate any insight or suggestions on workarounds or potential fixes. Thank you!

Hi all, With version 18.4 beta, I have a problem with the display of webviews in the app. In particular, the app of my bank has webviews inside it, and as they are not loading, I am unable to access it. Can you help me? Thank you.

The order nor -webkit-order properties of a child element of a flex parent dosen't work in Safari 18.3. Works correctly in FireFox and Chrome.

I am a developer working on a Safari extension that handles video playback, and I’ve encountered an issue with Safari version 18.2. When I open the developer tools to inspect the browser, videos fail to play as expected. It worked well on safari version 18.1. Details: Safari Version: 18.2 Operating System: macOS Sequoia v15.2 Additional Information: I’ve tested the extension with various video formats and sites. Clearing the cache and disabling other extensions did not resolve the issue. There are no error messages displayed in the console related to the extension. If I close inspecting, then extension(video playback) works well. I would appreciate any insights or suggestions on how to address this issue, as it impacts the functionality of my extension. Thank you for your help!

TLDR: I’m searching for a possibility to allow the usage of passkeys and hardware keys for any website in a wkwebview INFO: The browser is macOS ONLY Hi, I couldn’t really find documentation or forums posts on how to implement Webauthn for signin or hardware security keys for a second factor. Or rather where those events are triggered to be handled. In Safari you have that popover, that lets you either authenticate through Passwords or with a security key. When I visit webauthn.io for testing and click either register or authenticate I get Told not to present authorization sheet: Error Domain=com.apple.AuthenticationServicesCore.AuthorizationError Code=1 "(null)" ASAuthorizationController credential request failed with error: Error Domain=com.apple.AuthenticationServices.AuthorizationError Code=1004 "(null)" If I add func webView(_ webView: WKWebView, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping @MainActor (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) and func webView(_ webView: WKWebView, authenticationChallenge challenge: URLAuthenticationChallenge, shouldAllowDeprecatedTLS decisionHandler: @escaping @MainActor (Bool) -> Void) it doesn’t seem to change anything. I found something about the ASWebAuthenticationSessionWebBrowserSupported entitlement, but by my understanding this is used so a browser can get opened upon some other app calling a ASWebAuthenticationSession. Has anyone some guidance for me? I feel like webauthn and yubikey support are important security measures for our users. https://codeberg.org/miakoring/Amethyst/src/branch/main/Amethyst/Shared/ViewComponents/WebKit/WebViewModel.swift is the code for my webviewmodel. Delegates are in the Delecate folder https://codeberg.org/miakoring/Amethyst/src/branch/main/Amethyst/Shared/ViewComponents/WebKit

How can i add Authorization header to a wkwebview. I checked https://developer.apple.com/documentation/foundation/nsurlrequest#1776617 which says Authorization header is a reserved http header and shouldn’t be set. I want to set it when requesting a url in wkwebview for authentication purpose?

iOS 18 WKWebView images are not loading, no errors in older versions. The example while loading HTML is as follows. A problem occurs when you pull an image from a url. To get a URL image you need a cookie or something. I add them too, but it doesn't work on iOS 18. I get the error "An error occurred trying to load the resource." and a blue question mark on the screen. webView.configuration.websiteDataStore.httpCookieStore.setCookie(cookie) <html> <head> <style> body { font-family: -apple-system; margin: 0; padding: 0; text-align: center; } img { width: 100%; height: auto; } </style> </head> <body> <h1>Resim Görüntüleme</h1> <img src="https://xx.***.xx/example.png"> </body> </html> """

I have a Safari Extension which replaces default new tab and puts a link on a generated new tab. This link can be either usual URL link, or a URL Scheme, something like plecoapi://x-callback-url/df?hw=${char}&sec=dict In iOS 17 and previosly, this link worked flawlessly. In iOS 18, including 18.2, this X-Callback-URL link works only once, if I kill Safari process, reopen Safari and tap the link. Each subsequent tap will just reload the page, link won't work anymore until the next Safari reload. Usual URL links works every time without a problem.

I have a simple Safari extension which contains only Javascript and no native code. Currently I have the placeholder SafariWebExtensionHandler.swift that Xcode created when I added the extension. It's not doing anything useful, but simply deleting it doesn't seem to work. Can I have an extension that includes no native code?

I want to switch from Apns to standard notificationApi browser notification, but when my website originally used Apns, I switched to standard API and called Notification for message notification. The notification didn't appear. I confirmed that Notification.permission is granted.

We as a team of engineers work on an app intended to visualize medical images. The type of situations where the app is used involves time critical decision making for acute clinical conditions. Stability of the app and performance are of almost importance and can directly help timely treatment action. The app we are developing uses Javascript. It has been observed the footprint of the app is lagging by 2 to 3 seconds in releasing memory while javascript is expecting the memory to be cleared. This is affecting the stability of our application and preventing us in delivering the right quality of application. The problem specifically can be described as follows, using javascript create an array and then remove it and after removal of the array, create a new array of the same size immediately and again remove it. Because the memory is not released in time, if you repeat these steps a few times the app memory footprint will increase and that crashes the app. To reproduce this scenario, we have created a simple app which creates an array with size of 100MB and checks the memory footprint using the Xcode instrument tool. When we create an array of 100MB size, sometimes it shows the memory footprint peak of around 700MB-800MB and when we clear the array by assigning it with an empty array it releases the memory after 2-3 seconds. Considering the critical nature of the app, I urge you to look into this and provide necessary support and resolution. Please refer below sample code that will help to reproduce the mentioned scenario. import UIKit import WebKit class ViewController: UIViewController, WKUIDelegate { @IBOutlet var webView: WKWebView! let myHTML = """ <!DOCTYPE html> <html> <head> <style> .button-style { width: 400px; height: 200px; margin: 15px; font-size: 50px; } </style> </head> <body> <button type="button" class="button-style" onclick="loadDataInCache()">Load Data In Cache</button> <button type="button" class="button-style" onclick="removeDataFromCache()">Clear Cache</button> <script> const size = 1024 * 1024 * 100; let numberArray = []; function loadDataInCache() { numberArray = Array(size).fill(0); } function removeDataFromCache() { numberArray = []; } </script> </body> </html> """ override func viewDidLoad() { super.viewDidLoad() // self.view.addSubview(webView) webView.loadHTMLString(myHTML, baseURL: nil) } override func loadView() { let webConfiguration = WKWebViewConfiguration() webView = WKWebView(frame: .zero, configuration: webConfiguration) webView.uiDelegate = self view = webView } }

I’m encountering an issue with a Safari extension bundled with our main application (F-Secure). The extension is not appearing consistently in Safari settings on a customer’s iPad running iOS 18.3. Below are the details of the issue: Issue Description The Safari extension is bundled with the main app (F-Secure). After installing the app, the extension should automatically appear in Settings > Safari > Extensions, where the user can enable it. On the customer’s iPad, the extension is missing from the Safari settings. It briefly appeared once but then disappeared again.

Hello, I have a website that uses OTP's via text messages, and it was working where when the text came through and iPhone Safari would offer to paste the OTP into the web form, but it doesn't work now. I'm wondering what I can to do to get this working again. Thank you, -Michael

I've been developing a Safari web extension for MacOS and iOS, and I'm running into a very strange issue. I ported over my Chrome extension to Safari, and for several days as I was iterating on the extension (change code, build, run, test in Safari), everything worked perfectly fine. Once I was finished with the extension, I followed the instructions on how to prepare to submit the Safari web extension (and it's containing MacOS and iOS apps) to the App Store for review. For the MacOS app and Safari web extension on Mac, I changed my target from "My Mac" (which I'd been using for testing), to "Any Mac". I then went to the "Product" menu in Xcode and selected "Archive" That's when things started to go wrong. The next time I went to Safari, my web extension could no longer find critical files to run the extension (such as background.js, popup.html, etc.) This was despite there being no code changes before or after me creating a build archive. When I restarted Safari, the extension no longer appeared in the list of extensions within preferences. No matter what I do (clean build folder and re-run, restart Safari, restart Xcode, restart computer), nothing will get my extension to show up in Safari again. Note that this does not happen with the Safari web extension in the iOS simulator. It only happens on Mac. I was confident that my extension was working, so I submitted my extension to the Mac App Store for review. It was approved, and a few users have downloaded it and it works totally fine. To further try to figure out what's going on, I created a new sample Xcode project. From the new project screen, I chose the "Safari web extension" under "Multiplatform". Without making any code changes, I build and run that project, and the default MacOS app and Safari web extension from the template. I then immediately create an archive (with no code changes). Once I try to run the project for my Mac again, the extension no longer works. So I have verified that this problem does not have to do with my extension's code, but I cannot for the life of me figure out what is wrong. I have examined every possible build setting, but given that I ran a default project template, made no changes, and it still had this problem, I'm not sure what else could be wrong.

It's being a very long time that I discovery that in some web pages, that use function requestAnimationFrame will cause a lot of cpu, but very little in Chrome. I have already submitted this bug nearly two years ago without printout requestAnimationFrame, no one replied. I submitted again and mention requestAnimationFrame recently, hope there will be some response. If anyone interested in this issue and know some tech in javascript please help. You can enter https://www.baidu.com/ and click one of the topic in all the 百度热搜 which have 弹幕滚动(using requestAnimationFrame, and cause a lot of cpu usage) on right.

I'm building a macOS Google Chrome extension. I need to be able to send messages from the Chrome extension to the macOS app What's the set up flow? I've heard about native messaging, but I struggle to implement it. I've heard about XPC, but not sure JS can send messages to a macOS XPC service.