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Service Worker isn't working in Internal iframe: WebView file://
Is it a specification that the Service Worker doesn’t work in an internal iframe only when the parent page in a WebView is file://? It works in Mobile Safari under the same conditions, and we couldn’t find any specification that says Service Worker-like behavior doesn’t work with this combination. Step to reproduce: We use Vite to develop the application. For the iframe in Webview, Install vite-plugin-pwa with version ^0.20.5 Add VitePWA({...}) to plugins[] array in vite.config.ts Build and preview the app: npm run build && npm run preview. We open a Webview with file:// and then open the iframe with the URL to which we preview the app (We use ngrok to create the URL). Then we open Safari and inspect the Webview but inside the Developer > Service workers tab doesn’t have a registered service worker. For safari, we do the same step 1-3, We open Safari browser with the URL that we have deployed the app (The same URL we used in the iframe in Webview). We go inside the Developer > Service workers tab and it has a registered service worker. Environment: Simulator: IOS 18.2 Safari: MacOS 15.2 Expectation: Safari and the iframe in Webview should have a registered service worker inside the Developer > Service workers.
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480
Jan ’25
PWA pre-caching issue in devices.
PWA works perfectly fine in safari browsers in mac but in mobile devices it is not working it just shows, There is no internet connection. found a fix from ios release - https://developer.apple.com/documentation/safari-release-notes/safari-17_2-release-notes but actually it is not solving the issue. in my case even it is not throwing the issue - fix is - Fixed a cache miss bug in DOMCache that triggered service worker fetch errors. (115740959) (FB13188943)
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431
Jan ’25
EXT-X-DISCONTINUITY not properly handled in native iOS and Safari player (AVPlayer), broken playback.
Hi folks, When doing HLS v6 live streaming with fmp4 chunks we noticed that when the encoder timestamps slightly drift and a #EXT-X-DISCONTINUITY tag is created in either the audio or video playlist (in an ABR setup), the tag is not correctly handled by the player leading to a broken playback containing black screen or no audio (depending on which playlist the tag is printed in). We noticed that this is often true when the number of tags is odd between the playlists (eg. the audio playlist contains 1 tag and the video contains 2 tags will result in a black screen with audio). By using the same "broken" source but using Shaka player instead won't break the playback at all. Are there any possible fix (or upcoming) for AV Player?
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557
Jan ’25
Apple Messages strips URL from HTML clipboard
Hi there, I use the Clipboard API to create formatted project links with a "copy link" button. This has been really versatile for end users. When they paste into their email, they get a hyperlinked project name that leads to the project, and when they paste into the URL bar, they just get the project URL. It used to be that pasting into Messages on Mac would yield the same behavior as pasting into the URL bar. But recently, Messages started only pasting the inner text of the HTML clipboard, so no URL, just the project name, which isn’t very useful for a copy link function. Is there any way to ensure that Messages pastes the URL while maintaining my formatting options on other surfaces?
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334
Feb ’25
How to modify the global window object in Safari Extensions?
I want use the Safari Extension to decorate the window.fetch function, But No matter how I try, I can't get the fetch function to execute correctly. I was going through the documentation: https://developer.apple.com/documentation/safariservices/using-injected-style-sheets-and-scripts and found this sentence: "Injected scripts have an implied namespace — you don’t have to worry about your variable or function names conflicting with those of the website author, nor can a website author call functions in your extension. In other words, injected scripts and scripts that you include in the webpage run in isolated worlds, with no access to each other’s functions or data." Does this mean I can't modify the window object in the content script just like a Chrome extension does with the webpage? BTW, In chrome I use chrome.scripting.executeScript API, and in plasmo I just use world: "MAIN" content script's config to achieved this feature.
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346
Feb ’25
iOS VoiceOver Does Not Remove :focus-visible from Button When Moving to Non-Button Elements
When using iOS VoiceOver to navigate a webpage, selecting a element correctly activates the :focus-visible state. However, when VoiceOver moves to a non-button element (such as a or ), the previously focused button retains its :focus-visible state. The focus indicator only updates when VoiceOver moves to another . This behavior can be confusing for screen reader users, as it creates the appearance of multiple elements being focused simultaneously. It also differs from expected keyboard navigation behavior, where focus styles typically update as soon as the user moves to a new interactive element. Is this an intentional VoiceOver behavior, or could this be a bug? If intentional, is there a recommended workaround to ensure correct focus indication when moving between different types of elements? Steps to Reproduce: Enable VoiceOver on an iOS device. Navigate using swipe gestures or explore-by-touch to focus on a . Observe that the button correctly receives the :focus-visible styling. Move to a non-button element (e.g., a with tabindex="0" or an ). Notice that the button still retains its :focus-visible state, even though VoiceOver has moved to a new element. Expected Behavior: The previously focused should lose its :focus-visible state when VoiceOver moves to a different interactive element, just as it does when using keyboard navigation. Actual Behavior: The :focus-visible state remains on the previously focused button unless VoiceOver moves to another . This can create confusion by displaying multiple focus indicators at once. Tested On: iOS 17.7, 18.3.1 iOS Safari iPhone 11 Pro, iPhone 14 Pro Max
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635
Feb ’25
If the "Not Secure Connection Warnings" is enabled in Settings > App > Safari, are HTTP connections not allowed under any circumstances?
I'm posting a question here as I have encountered an issue while seeking help from engineers in the thread. thread773837 If the "Not Secure Connection Warnings" is enabled in Settings > App > Safari, are HTTP connections not allowed under any circumstances? I also posted a question about NSAllowsLocalNetworking not being applied, and I was informed that ATS (App Transport Security) is not related to SFSafariViewController. If that's the case, what feature causes the error "Safari cannot open the page. Error: Failed to navigate to an HTTP URL with HTTPS-only mode enabled"? I am currently working to resolve this issue.
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526
Feb ’25
"excludeMatches" array in scripting.registerContentScripts() API is totally ignored in Safari web extensions
In a project to create a web extension for Safari, using scripting.registerContentScript() API to inject a bunch of scripts into web pages, I needed to manage a dynamic whitelist (i.e., web pages where the scripts should not be injected). Fortunately, scripting.registerContentScripts() gives you the option of defining a list of web pages to be considered as a whitelist, using the excludeMatches parameter in the directive, to represent an array of pages where the script should not be injected. Here just a sample of what I mean: const matches = ['*://*/*']; const excludeMatches = ['*://*.example.com/*']; const directive = { id: 'injected-jstest', js: ['injectedscript.js'], matches: matches, excludeMatches: excludeMatches, persistAcrossSessions: false, runAt: 'document_start' }; await browser.scripting.registerContentScripts([directive]) .catch(reason => { console.log("[SW] >>> inject script error:",reason); }); Of course, the whitelist (the excludeMatches array) is not static, but varies over time according to the needs of the moment. Everything works perfectly in Chromium browsers (Chrome, Edge, ...) and Firefox, but fails miserably in Safari. In fact, Safari seems to completely ignore the excludeMatches parameter and injects the script even where it should not. Has anyone had the same problem and solved it somehow? NOTE : To test the correctness and capabilities of the API in each browser, I created a simple repository on Github with the extension code for Chromium, Firefox and Safari (XCode project).
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510
Feb ’25
Detecting tabs change in Safari App Extension when switching windows inside validateToolbarItem.
Hi. I'm a developer of Tab Finder (https://apps.apple.com/us/app/tab-finder/id6741719894) My problem is that every time i switch from my first window to a second window, the tabs in the validateToolbarItem() are INcorrect on a first call, but when I switch back from the second window to my main window, the tabs are CORRECT even on a first call. To demonstrate it, i recorded a video: https://youtu.be/RwskzrSJ8u0 To run the same sample extension from the video, you can get the code from this GitHub repo: https://github.com/kopyl/test-tabs-change Its only purpose is to log URLs of an active page of all tabs. The SafariExtensionHandler's code of the sample app is very simple: import SafariServices func printOpenTabsHost(in window: SFSafariWindow) async { let tabs = await window.allTabs() log("Logging tabs for a new window: \(window.hashValue)") for tab in tabs { let page = await tab.activePage() let properties = await page?.properties() let url = properties?.url log(url?.absoluteString ?? "No URL") } } class SafariExtensionViewController: SFSafariExtensionViewController { static let shared = SafariExtensionViewController() } class SafariExtensionHandler: SFSafariExtensionHandler { override func validateToolbarItem(in window: SFSafariWindow, validationHandler: @escaping ((Bool, String) -> Void)) { Task { await printOpenTabsHost(in: window) } validationHandler(true, "") } override func popoverViewController() -> SFSafariExtensionViewController { return SafariExtensionViewController.shared } } Could you please tell if i'm missing something and how to see the actual tabs inside the overridden validateToolbarItem call of the SafariExtensionHandler (or in any other way, I'm okay with any implementation as long as it works).
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288
Mar ’25
Unclear interimResults Web Speech API implementation in Safari iOS (WebKit)
Hi all! I have been working on a web speech recognition service using the Web Speech API. This service is intended to work on smartphones, primarily Chrome on Android and Safari (or WebKit WebView) on iOS. In my specific use case, I need to set the properties continuous = true and interimResults = true. However, I have noticed that interimResults = true does not always work as expected in WebKit. I understand that this setting should provide fast, native, on-device speech recognition with isFinal = false. However, at times, the recognition becomes throttled and slow, yielding isFinal = true and switching to cloud-based recognition. To confirm whether the recognition is cloud-based, I tested it by disabling the internet connection before starting speech recognition. In some cases, recognition fails entirely, which suggests that requiresOnDeviceRecognition = false is being applied. (Reference: SFSpeechRecognitionRequest.requiresOnDeviceRecognition) I believe this is not the expected behavior when setting interimResults = true. I have researched the native services used by the Web Speech API on iOS devices, and the following links seem relevant: • SFSpeechRecognizer • SFSpeechRecognitionRequest.shouldReportPartialResults • SFSpeechRecognizer.supportsOnDeviceRecognition • Recognizing speech in live audio • Apple Developer Forums Discussion I found that setRequiresOnDeviceRecognition and setShouldReportPartialResults appear to be set correctly, but apparently, they do not work as expected: WebKit Source Code
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336
Mar ’25
Redirect link open 2 links not only 1 link in IOS 18
When i use adjust redirect: https://app.adjust.com/xxxxxx?label=xxxxxx&redirect=http%3A%2F%2Fwww.testingmcafeesites.com%2Ftestcat_bu.html It open 2 links: https://Fwww.testingmcafeesites.com then http://www.testingmcafeesites.com/testcat_bu.html And in my app use redirect link for open a web page. But content in domain url like https://www.testingmcafeesites.com/ not be set. So it talke long time often 1 minute for finish request in first link. It hapen only in ios 18 i tested in ios 17 and ios 16 it open one link only.
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348
Mar ’25
iOS Mobile Video Audio Playback Issues in React
I'm experiencing issues with audio playback in my React video player component specifically on iOS mobile devices (iPhone/iPad). Even after implementing several recommended solutions, including Apple's own guidelines, the audio still isn't working properly on iOS Safari. It works completely fine on Android. On iOS, I ensured the video doesn't autoplay (it requires user interaction). Here are all the details: Environment iOS Safari (latest version) React 18 TypeScript Video files: MP4 with AAC audio codec Current Implementation const VideoPlayer: React.FC<VideoPlayerProps> = ({ src, autoplay = true, }) => { const videoRef = useRef<HTMLVideoElement>(null); const isIOSDevice = isIOS(); // Custom iOS detection const [touchStartY, setTouchStartY] = useState<number | null>(null); const [touchStartTime, setTouchStartTime] = useState<number | null>(null); // Handle touch start event for gesture detection const handleTouchStart = (e: React.TouchEvent) => { setTouchStartY(e.touches[0].clientY); setTouchStartTime(Date.now()); }; // Handle touch end event with gesture validation const handleTouchEnd = (e: React.TouchEvent) => { if (touchStartY === null || touchStartTime === null) return; const touchEndY = e.changedTouches[0].clientY; const touchEndTime = Date.now(); // Validate if it's a legitimate tap (not a scroll) const verticalDistance = Math.abs(touchEndY - touchStartY); const touchDuration = touchEndTime - touchStartTime; // Only trigger for quick taps (< 200ms) with minimal vertical movement if (touchDuration < 200 && verticalDistance < 10) { handleVideoInteraction(e); } setTouchStartY(null); setTouchStartTime(null); }; // Simplified video interaction handler following Apple's guidelines const handleVideoInteraction = (e: React.MouseEvent | React.TouchEvent) => { console.log('Video interaction detected:', { type: e.type, timestamp: new Date().toISOString() }); // Ensure keyboard is dismissed (iOS requirement) if (document.activeElement instanceof HTMLElement) { document.activeElement.blur(); } e.stopPropagation(); const video = videoRef.current; if (!video || !video.paused) return; // Attempt playback in response to user gesture video.play().catch(err => console.error('Error playing video:', err)); }; // Effect to handle video source and initial state useEffect(() => { console.log('VideoPlayer props:', { src, loadingState }); setError(null); setLoadingState('initial'); setShowPlayButton(false); // Never show custom play button on iOS if (videoRef.current) { // Set crossOrigin attribute for CORS videoRef.current.crossOrigin = "anonymous"; if (autoplay && !hasPlayed && !isIOSDevice) { // Only autoplay on non-iOS devices dismissKeyboard(); setHasPlayed(true); } } }, [src, autoplay, hasPlayed, isIOSDevice]); return ( <Paper shadow="sm" radius="md" withBorder onClick={handleVideoInteraction} onTouchStart={handleTouchStart} onTouchEnd={handleTouchEnd} > <video ref={videoRef} autoPlay={!isIOSDevice && autoplay} playsInline controls crossOrigin="anonymous" preload="auto" onLoadedData={handleLoadedData} onLoadedMetadata={handleMetadataLoaded} onEnded={handleVideoEnd} onError={handleError} onPlay={dismissKeyboard} onClick={handleVideoInteraction} onTouchStart={handleTouchStart} onTouchEnd={handleTouchEnd} {...(!isFirefoxBrowser && { "x-webkit-airplay": "allow", "x-webkit-playsinline": true, "webkit-playsinline": true })} > <source src={videoSrc} type="video/mp4" /> </video> </Paper> ); }; Apple's Guidelines Implementation Removed custom play controls on iOS Using native video controls for user interaction Ensuring audio playback is triggered by user gesture Following Apple's audio session guidelines Properly handling the canplaythrough event Current Behavior Video plays but without sound on iOS mobile Mute/unmute button in native video controls doesn't work Audio works fine on desktop browsers and Android devices Videos are confirmed to have AAC audio codec No console errors related to audio playback User interaction doesn't trigger audio as expected Questions Are there any additional iOS-specific requirements I'm missing? Could this be related to iOS audio session handling? Are there known issues with React's handling of video elements on iOS? Should I be implementing additional audio context initialization? Any insights or suggestions would be greatly appreciated!
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303
Mar ’25
Safari Web Extension: This extension can read ... including passwords...
I want to migrate from a Safari App Extension to a Safari Web Extension, but don't know how to get rid of the message, telling users that my extension can access their passwords. Here is a message which I see: I was thinking that this might be because all Safari Web Extension get this type of access, but I have a Safari Web Extension which does not require such level of access: Here is the manifest: { "manifest_version": 2, "default_locale": "en", "name": "__MSG_extension_name__", "description": "__MSG_extension_description__", "version": "1.1", "icons": { "48": "images/icon-48.png" }, "background": { "scripts": [ "background.js" ], "persistent": true }, "browser_action": { "default_popup": "popup.html", "default_icon": { "16": "images/toolbar-icon-16.png" } }, "permissions": [ "nativeMessaging", "tabs" ] } and here is the Info.plist file: Here is the entire code of the extension: https://github.com/kopyl/web-extension-simplified
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352
May ’25
Videos viewed in WKWebView have Spatial Audio issues
I have an app that has a WKWebView for watching YouTube videos. When the videos are windowed the audio seems fine, positionally as well. All perfectly. When I fullscreen the video and it goes into the native visionOS video player the audio messes up. It will suddenly sound like it is in your ears, or maybe even just one ear channel, or the position will be wrong. It might be fine for a moment but the second I touch the controls or move the window the sound jumps across the room, away from the window, or switches to stereo. Sometimes exiting windows entirely you will still hear the videos playing. Even if you open the window back up and go to another screen and open another video, now you hear 2 videos playing at the same time with no way to stop the first one in the background, requiring to force restart the app. It is all sorts of glitchy. I haven't the slightest clue what is happening here. I am strongly feeling this is a visionOS bug. I tried using AVAudioSession to change some of the sound settings, and that makes zero difference in behavior. Multiple testers have also reported this behavior and it has been seen on both visionOS 2.3 and 2.4 betas. Thanks for the help! This is driving me mad! It is extremely consistent behavior!
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127
Mar ’25
Preventing JavaScript from Stopping in Safari When It Goes into the Background
From a mail app or similar, when opening a webpage in Safari as an external browser, JavaScript on the webpage stops running if Safari goes into the background. Is there a way to prevent this from happening? Sample code for the counter: Behavior: Upon returning from the background, the counter continues for about 7-8 seconds but does not progress further. For example, if Safari is kept in the background for about 20 seconds and then brought back, the counter stops at around 7-8 seconds and only resumes counting after returning to the foreground. Expectation: The counter should continue running even if Safari goes into the background.
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Mar ’25
Notification sound (Web or PWA)
Good morning fellow developers, For a while i am struggeling with providing sound to my users on IOS (Safari on Mac is no problem and every other device is not a problem) (we have an existing phone system and made a chat as well), the case is very simple: the notification sound is only for users who are logged in and online for chat. i have tried multiple things: Audio play with javascript (start with mute, play when user clicks a button so the sound is familiar, play when user clicks a button and directly pause it and continue when needed) PWA: the dashboard has been made available as pwa and notifications using google firebase. The popup does show for notifcations to be allowed (and receiving the notifications does work on any other device) But any IOS device cannot register. The information i find is that notifications were supported with 16.4 or higher but also have been deprecated around IOS 17, auto play is not allowed. We have an app in development for our product as well were we will have a notification which will handle this, but that is not the solution we can use now. Long story, short question: is it still somehow possible to push a notification to the user when using the PWA or play a sound in the browser (based on an ajax function). The app/website wont be in the background, so it will always be on the screen. Languages we use: html/javascript (mostly vanilla)/php
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59
Mar ’25