I've been unable to successfully get a webpage to send a message to a Safari web extension, no matter what I try doing. I've added the following to my manifest.json file, and it's running manifest v3 { "externally_connectable": { "matches": [ "*://mywebsite.com/*", "*://localhost:3000/*" ] } } My web page executes the following code snippet. I've tried this both while running my site locally (on localhost) and pushed to production. let safariExtensionId = "co.companyname.productname.Extension (ABCD1234)" browser.runtime.sendMessage(safariExtensionId, { greeting: "hello"}, function(response) { console.log("Received response from background page"); console.log(response.farewell); } ); In the Safari web extension's background.js file, I've added the following onMessageExternal listener: browser.runtime.onMessageExternal.addListener((message, sender, sendResponse) => { console.log("Received message from the sender."); console.log(message.greeting); sendResponse({ farewell: "Goodbye!" }); }); This is directly copied from the instructions in this WWDC video: https://developer.apple.com/documentation/safariservices/messaging-between-a-webpage-and-your-safari-web-extension It's also extremely difficult to debug what's happening since the extensions service working frequently does not appear in the Web Extension Background Content menu Is there something I'm doing wrong, or a bug I'm not aware of?

So I have web Augmented Reality apps hosted on AWS S3. It worked fine for a month, but as soon as the IOS 18.4 update was installed they stopped working. It works on every other device and IOS versions. The URLs for the mentioned AR experiences: digitechonline.in/solsprefimaginewt8/ digitechonline.in/solsprefimaginewt8p2/ digitechonline.in/orocarear/ These AR experiences get stuck on the loading screen and either reload or give an error. Ideally the camera is supposed to open. I have tested it on Safari, Microsoft Edge and Google Chrome browsers. They were created through Unity webgl and hosted on AWS S3 bucket. Please provide a quick solution to this.

Hi, I’m working on a Safari extension for macOS, and I’d like the app to use specific system notification settings right after installation. I’m wondering if there’s a way in Swift to programmatically configure the default notification preferences (as seen in System Settings > Notifications > [my app]). Here are the desired settings: Only Desktop – without “Notification Center” or “Lock Screen” Alert Style: Temporary Badge App Icon: Enabled Play Sound for Notifications: Disabled Show Previews: When Unlocked Notification Grouping: Off (I don’t want them to accumulate in Notification Center) Here is the code I’m currently using to display a basic notification: private func handleNotificationRequest(_ message: [String: Any]) { guard let title = message["title"] as? String, let body = message["body"] as? String else { return } UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { granted, error in if granted { self.showNotification(title: title, body: body) } } } private func showNotification(title: String, body: String) { let content = UNMutableNotificationContent() content.title = title content.body = body content.sound = nil // No sound for subtle notification // Create notification that doesn't persist in notification center let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 0.1, repeats: false) let request = UNNotificationRequest(identifier: "fast-url-copy-notification", content: content, trigger: trigger) UNUserNotificationCenter.current().add(request) { error in if let error = error { os_log(.error, "Failed to show notification: %@", error.localizedDescription) } } } OS: macOS 26.0 Thanks in advance, Mateusz

i have programmed a website and struggle to get it to work on safari ios26. 100vh fixed positioned images do not fill the screen anymore. i could live with that, having two background coloured spaces at the top and at the bottom. but elements that scroll out of this new viewport are fully visible, as you can see on the enclosed screenshots. i have no idea how i could fix this and dont find any answer anywhere on the net?

Hi! I'm working on a web extension for Safari and I need to send messages from the containing application to JavaScript. For this I use the method class func dispatchMessage( withName messageName: String, toExtensionWithIdentifier identifier: String, userInfo: [String : Any]? = nil ) async throws of the SFSafariApplication class. If the site is opened in Safari in normal mode, everything works as expected. However, if the site is "docked", the messages are not transmitted to this "Web App".

Safari Extension Error: “Non-persistent background content cannot listen to webRequest events.” after macOS 15.4 / Safari 18.4 Update We’re seeing the following error in the Safari Extensions tab after updating to macOS 15.4 and Safari 18.4: “Non-persistent background content cannot listen to webRequest events.” This error did not appear prior to the update, and we haven’t found any official documentation stating that webRequest API is no longer supported in Safari. In our extension (Manifest V3), we are using the webRequest.onHeadersReceived callback to intercept response headers and read updated cookies. While the functionality itself still works as expected. we’re able to access the response headers and this error is now shown in the Extension settings page. We are not seeing this issue in other browsers (Chrome, Firefox) using the same Manifest V3 setup. Is there any plan to deprecate webRequest support in Manifest V3 for Safari? We’d appreciate any clarification or guidance on how to handle this going forward.

Hi Apple Developer Community and Support, We are implementing Apple Pay on the Web and are encountering a persistent issue with merchant validation when the ApplePaySession is initiated from a JavaScript application running within a cross-origin iframe. Our Setup: Top-Level Domain: https://application.my.com/ (where the Apple Pay button is displayed, and the iframe is embedded) iFrame Content Origin: https://cashier.my.com/ (Our custom JavaScript application that handles the Apple Pay integration and directly calls our Payment Service Provider's (PSP) API for merchant validation). iFrame allow attribute: The iframe correctly includes allow="payment *". The Problem: When a user clicks the Apple Pay button, the ApplePaySession is successfully created and the Apple Pay sheet opens in Safari iOS. This suggests the browser recognizes the allow="payment *" attribute and allows the API calls. However, during the session.onvalidatemerchant callback, our JavaScript code makes a direct API call to our PSP (Nuvei)'s endpoint. This call consistently fails with an "Invalid domain name!" error, and the Apple Pay sheet then shows "Payment Not Completed." PSP's Diagnosis: Our PSP (Nuvei) has investigated and stated that for this specific endpoint (getAppleValidationApiFlow.do), "there is no explicit way to pass domain to the endpoint and domain for which session is issued is based on 'Referer' header." Our Question for Apple: Given that Safari 17+ now supports allow="payment" for cross-origin iframes to enable Apple Pay APIs, we have the following questions: What is Apple's official guidance or expectation regarding the Referer header for ApplePaySession.onvalidatemerchant calls when the ApplePaySession is instantiated from a cross-origin iframe? Is it expected that the Referer header for calls originating from the iFrame will always be the iFrame's origin? Does Apple's merchant validation process (when the PSP calls apple-pay-gateway.apple.com/paymentservices/startSession) itself rely on or interpret the Referer from the initial client-to-PSP call? Are there recommended best practices or standard approaches for PSP integrations in this cross-origin iFrame scenario to ensure the Referer validation (or equivalent domain validation) is correctly satisfied? We're trying to understand if our PSP's specific reliance on the Referer for this validation is a standard requirement implicitly set by Apple for this flow, or if there are other architectural approaches that should allow this scenario to work seamlessly. Thank you for any insights or guidance you can provide.

After reading several posts I see that I need to add the "com.apple.developer.web-browser.public-key-credential" capability to my macOS app in order to get it to work. So my noob question is where do I request this capability? Can I as a developer request it or does the Account owner need to request it? Once approved, how do I add it to my app's capabilities? Thanks for your patience

Hi everyone, My web application has two services: myapp.com and account.myapp.com. The first manages all app content, while the latter handles the authentication, with Sign In with Apple included. The tech stack is mainly composed of React, JS, and Express. We'd like to allow users to authenticate inside a dialog on some pages of myapp.com. To avoid replicating stuff from one service to another, we put an iframe inside the dialog to show the authentication standard page from account.myapp.com. Email and Facebook processes work fine, but we have the following issues with Sign in with Apple: On desktop, not Safari, a pop-up window opens when you click on the Apple button, and it works as expected. On desktop Safari, the pop-up window is blocked. We want the native Apple pop-up to show instead of a generic browser new window. On mobile, nothing happens on click Obviously, outside the iframe, everything works as expected. I can't seem to find anything related to an iframe constraint in the Sign in with Apple docs. Is this feasible?

When practicing a post request today I forgot to use the setvalue method. Why is this method important and needed for a post request? Don't we just encode the data to JSON and put that as the httpbody and make the request

The extension popups don't seem to support the dark mode media query. The only way the query gets detected is when a color-scheme is added: <meta name="color-scheme"content="light dark">

When trying to login using apple account it shows me this error "Your request could not be completed because of an error. Please try again later." although in the inspector everything looks fine (200)

I'm running apache with following configuration. /cc require TLS client certificate / not require TLS client certificate Starting with ios 18.4, accessing /cc after / fails with following error: AH02261: Re-negotiation handshake failed, referer: https://www.example.com/... SSL Library Error: error:1417C0C7:SSL routines:tls_process_client_certificate:peer did not return a certificate -- No CAs known to server for verification? It seems like ios 18.4 does not support TLS re-negotiation. (It worked with ios 18.3 and before) Is this an expected behavior or a bug?

I have multiple web views of the same domain that share the same local storage, as expected. One of them though, is loading a .webarchive file. The web archive is of the same domain, and is loaded using the same base URL. For some reason, in most cases, the local storage is not shared with this web view when loading the web archive, although if I make that same web view load the actual live web page it does share local storage. I say in most cases, because for some users it works as expected, but for a significant portion of users it isn't sharing local storage. I think that the main difference between working and not is iOS version. iOS 17 seems to be able to share the local storage but iOS 18 does not. I can't find anything related in the release notes of iOS 18 versions. There is nothing in the documentation for load(_:mimeType:characterEncodingName:baseURL:), or the header file, that explains anything specific about local storage and webarchive loading. Does anyone know for sure how local storage is handled when a webarchive is loaded into a web view, and did something change with iOS 18 in regards to this?

Actually this is a duplicate for https://developer.apple.com/forums/thread/106537 but in web-specific forums section. Is there any video/audio codec best practices, guides, recommendations for app/web developers for best performance (take advantage from HW acceleration), power consumption saving? What are officially supported media containers? What are video encoding profiles, video dimensions, frame rates? The only official source I have found is https://developer.apple.com/documentation/webkit/delivering-video-content-for-safari?language=objc. But h264 is pretty old. I experimentally found that the VP9 video format is also supported on iOS newer versions. But is this a requirement? Сan i be sure that the video will play on all devices? My goal is to provide web media content (which will be rendered in my application using WKWebView API) that will be supported by most devices (both iOS and MacOS), takes advantage of such features as hardware decode acceleration and be efficient. Any hints/info is highly appreciated. Best regards.

We attempted to perform automated testing (using Python) on an 11th generation iPad (iPad A16) using Selenium 4.38.0, but we were unable to capture webpage screenshots using the function "driver.save_screenshot(filename)". However, this issue did not occur on an iPad Air 4. During our debugging of the "WebDriver.py" script, we found that after issuing the screenshot command, a status value of 500 was returned, accompanied by an "unknown error". We have communicated with the Selenium team and provided the main Python code(https://github.com/SeleniumHQ/selenium/issues/16555). They suggested that the problem likely lies within the SafariWebDriver, rather than in the "remote_webdriver.py" file. Additionally, we tried using the SafariWebDriver provided by Safari Technology Preview, but the problem persisted.

WKWebview of iOS 18 includes Safari browser. When playing videos, some videos show "NotSupportedError: The operation is not supported.", but it is normal on iOS15 devices. The video link is as follows. Even if it is downloaded and referenced locally in HTML, it cannot be played, so it is ruled out that it is a network problem. https://ydtj-adas.oss-cn-shanghai.aliyuncs.com/e6yun.com/exam/exam/a35447b496b94e5e9a6aab27d62c867e.mp4 cannot be played https://ydtj-adas.oss-cn-shanghai.aliyuncs.com/e6yun.com/exam/exam/82d970957a7d4e8d88c13cd101143005.mp4 can be played

Safari Web Extension for enterprice distribution: If I press run button on xcode it shows the safari web extension toggle and works perfect When installed through exported ipa, the web extension toggle dissapears, it doesnt matter how it was installed through mdm, link, or directly ipa from xcode I just exported an ipa as debugging and it worked when I pushed the ipa

Merhaba ben Müslüm İkuz blog sayfam için Safari tarayıcıdan siteye çok fazla istek geliyor. Sayaçlara girdiğimde uygulama safari olarak gözüküyor ve binlerce sayfa isteği gelmiş. Bu bir siber saldırı mı ? site adress https://ikuz.com.tr/

Hi! My team and I are developing an education platform. One of our features is a auto-play flashcard feature where users can listen to their flashcards hands free. We are having an issue where the autoplay wont work for users with iPhone's. I think the rule is that user's are supposed to give consent to the auto-play. We do make the user hit play before it starts so that should be the "constent" but it's still not working. Anyone have ideas?