Hello there,
back in the old WebKit API there was the WKDownloadDelegate to handle download actions in WebViews. I was wondering how to handle download actions within the new WebKit in SwiftUI. Is there anything to use already or are there workarounds to handle downloads?
Greetings,
Thorben
Explore the integration of web technologies within your app. Discuss building web-based apps, leveraging Safari functionalities, and integrating with web services.
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Hi Team,
I'm using the simple mailto functionality in the demo page and when I tested the same via Safari mailto functionality is not working.
However, the same feature is working as expected via Chrome.
Demo: https://jsfiddle.net/xut0ed4y/
Kindly help.me to resolve this issue.
I have a very specific issue that happens only on iOS Simulator version 18.4.
It does NOT happen when I run my app on a real iOS 18.4 device through Testflight.
My app displays a WebView (courtesy of Capacitor, url scheme capacitor://).
Inside that Webview I'm using Firebase JS API (11.2.0) and calling signInWithEmailAndPassword, which works well in all other contexts, i.e. browser, Android webview, iOS webview in all other Simulator versions, and on real devices.
Only when running in Simulator 18.4, I get a failed network request:
cannot parse response
Fetch API cannot load https://identitytoolkit.googleapis.com/v1/accounts:signInWithPassword?... due to access control checks.
Failed to load resource: cannot parse reponse
error: FirebaseError: (auth/network-request-failed)
Everything is working correctly for both:
Capacitor app webview installed on a real 18.4 device with Testflight
Safari (non-webview) in the 18.4 Simulator
The issue is severe for us, because we are unable to develop our app and test it in the simulator on 18.4 Simulator before pushing it through Testflight internal release.
Request headers on the failed request (no response status or headers available).
Request
Accept: /
Content-Type: application/json
Origin: capacitor://localhost
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: cross-site
User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_4 like Mac OS X) - AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148
X-Client-Version: Mobile/JsCore/11.2.0/FirebaseCore-web
X-Firebase-Client: (...)
We operate a native iOS app that authenticates users via the system browser using OIDC against a 3rd party SaaS authentication broker, which then performs authentication against the individual customer IdPs using SAML within the browser session, and then completes the OIDC login between the broker and our application.
Our application initiates the OIDC login using ASWebAuthenticationSession, using the broker’s library, against the broker, and at that point the authentication workflow is handled by the broker. At the beginning of the login session, the broker sets a session-identifying cookie for their domain, before redirecting the user to their company’s identity provider to authenticate, which then redirects the user back to the broker.
Intermittently, Mobile Safari does not include that previously set cookie on the final communication with the broker, when being redirected from the IdP as the final step of the SAML portion of the login workflow. When the cookie is missing, the broker cannot correlate the authentication response to the original request and the login fails, even though the user successfully authenticated at their identity provider. The same user can sometimes find success after retrying on the same device minutes later, without any changes.
When we first started diagnosing this issue, we were seeing about a 20% rate of these errors across all Mobile Safari logins, which we can identify fairly conclusively (from provider logs, based on their guidance) as being caused by the session cookie set in one request not being provided on the subsequent request to the same domain.
Our authentication broker provider has indicated, based on their server logs, and logs from an affected device, that this behavior is caused by Mobile Safari’s Intelligent Tracking Protection (ITP) causing Mobile Safari to not send the login session cookie to the broker when handling the SAML redirect from the IdP back to them.
Our authentication broker provider recommended that we switch the SAML Request binding setting from POST to Redirect in the SAML configurations against our customer IdPs, which reduced the rate of these errors to about 5% for most of our customers. However, we have at least one customer which is still seeing about a 20% rate in these errors for Mobile Safari logins after this change, and even a 5% error rate seems high.
Our authentication broker has not been able to suggest any further remediation options, and has suggested we contact Apple for assistance.
Our questions are:
Is it reasonable to assume that ITP is causing this issue?
Is there any way to confirm, conclusively, that ITP has caused a previously-set cookie to not be provided on a subsequent request to the same domain, i.e. via device logs?
If so, are there any steps which can be taken to reduce or eliminate this error?
Changes to how ASWebAuthenticationSession is invoked?
Changes to the Authentication Broker which would reduce the chance of ITP being triggered?
Changes to the Customer IdP configuration which would reduce the chance of ITP being triggered?
We are currently implementing the payment flow, and for handling payment details — including card entry and validation — we are utilizing a WKWebView. The webview securely loads the payment provider’s page, ensuring sensitive information such as card numbers are entered and validated directly within the web context.
I’d like to clarify that this change has not yet been released to Production. As part of a feature enhancement to our existing payment flow, we are transitioning to a new payment vendor, SnapPay.
While trying to load the SnapPay URL embedded within an iFrame in our iOS app, I observed the following error in the Xcode console. While this error may be generic, I wanted to highlight it:
825a18 - [pageProxyID=7, webPageID=8, PID=67346] WebPageProxy::didFailLoadForFrame: frameID=24, isMainFrame=0, domain=NSURLErrorDomain, code=-999
Upon investigating, we compared the headers from our existing payment URL and SnapPay's URL, and found that SnapPay includes the following Content-Security-Policy (CSP) header:
Content-Security-Policy: frame-ancestors ...
"Content-Security-Policy" value="default-src 'self'; script-src 'self' https://hcaptcha.com https://.hcaptcha.com https://code.jquery.com https://www.gstatic.com https://code.jquery.com/jquery-3.3.1.min.js https://test.lightbox.cardx.com/v1/lightbox.min.js https://www.ssa.gov/accessibility/andi/ https://c.evidon.com 'unsafe-inline' 'unsafe-eval'; style-src 'self' https://hcaptcha.com https://.hcaptcha.com https://fonts.googleapis.com/css https://stage.snappayglobal.com/Resource/ https://www.ssa.gov/accessibility/andi/andi.css 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' *.googleapis.com *.gstatic.com ; connect-src 'self' https://demo1.cditechnology.com https:; form-action https://hcaptcha.com https: 'self' *.ipg-online.com secure.bluepay.com https://test.api.lightbox.cardx.com https://3ds-acs.test.modirum.com/ https://demo1.cditechnology.com/; frame-ancestors https://snappaydirect-perf.fiserv.com 'self' file: https: http; frame-src .snappayglobal.com 'self' https://hcaptcha.com https://.hcaptcha.com https: https://www.google.com .ipg-online.com secure.bluepay.com https://.cardconnect.com https://test.api.lightbox.cardx.com/ https://test.lightbox.cardx.com https://paywithcardx.com/payment/auth.cgi securepayments.cardpointe.com *.cardpointe.com https://3ds-acs.test.modirum.com/ https://www.yokohamatire.com http://uat1-txt.ad.portal.texas.gov https://uat1-txt.ad.portal.texas.gov "
After multiple working sessions with the SnapPay team, we were able to confirm that when they disable CSP or remove the frame-ancestors directive, the iFrame loads successfully within our app. However, SnapPay cannot change on their CSP.
To enable the iFrame to load in the iOS app, we added the following line of code:
webView.configuration.preferences.setValue(true, forKey: "allowFileAccessFromFileURLs").
This resolved the issue with loading the iFrame. Note: the file being loaded is a local .html file,.
Before submitting this update to the App Store, I’d like to confirm whether this usage of allowFileAccessFromFileURLs is acceptable for App Store review.
I wanted to confirm that with this change is there a security concern for WKWebview?
Hello,
We are setting up Apple Sign In in one of our non production websites but we keep getting a "oauth code says expired or revoked" error. We have created a brand new service ID and key for this but are still getting this error.
Topic:
Safari & Web
SubTopic:
General
iOS18的app中加载了自己开发的H5页面,H5页面有个input输入框,每次输入框聚焦的时候,都会弹出键盘滑行键入的提示:“滑动手指将字母拼成词以快速键入”,应该怎么修改,达到不每次都弹出这个提示呢
In WKWebView, there is the WKUIDelegate method:
func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {}
This delegate method provides a callback when a new window (for example, target="_blank") is requested in the web view.
However, in native SwiftUI (iOS 26), WebView / WebPage APIs do not provide an equivalent delegate method to handle new window requests.
As a workaround, I am using the following method:
public func decidePolicy(for action: WebPage.NavigationAction, preferences: inout WebPage.NavigationPreferences) async -> WKNavigationActionPolicy {}
In this method, when action.target == nil, I treat it as a new window request.
My question:
Is relying on action.target == nil in decidePolicy a reliable and future-safe way to detect new window requests in SwiftUI’s WebView, or is there a better or more recommended approach for handling target="_blank" / new window navigation in the SwiftUI WebView APIs?
Code:
public func decidePolicy(for action: WebPage.NavigationAction, preferences: inout WebPage.NavigationPreferences) async -> WKNavigationActionPolicy {
guard let webPage = webPage else { return .cancel }
// Handle case where target frame is nil (e.g., target="_blank" or window.open)
// This indicates a new window request
if action.target == nil {
print("Target frame is nil - new window requested")
// WORKAROUND: Until iOS 26 WebPage UI protocol is available, we handle new windows here
// Try to create a new WebPage through UI plugins
if handleCreateWebPage(for: webPage, navigationAction: action) != nil {
// Note: The new WebPage has been created and published to the view
return .allow
}
}
return .allow
}
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?
Topic:
Safari & Web
SubTopic:
General
I understand that you want echoCancellation and noiseSuppression in most cases, but I would like to be able to turn off all the filter processes for this particular use case.
When I set echoCancellation: false in navigator.mediaDevices.getUserMedia, Safari 26 on MacOS produces stereo recording even if I set channelCount: 1.
When I set echoCancellation: true, it produces mono recording as expected.
How can I get mono recording with echoCancellation: false and channelCount: 1?
Thanks!
Topic:
Safari & Web
SubTopic:
General
Please!
is there an app or anything I can do
ive posted multiple times.
Ive researched all that I can
even with screen time on and web limits it still lets u swipe to delete history! Yes it’s grayed out but u can still swipe and delete it!!
iOS 26 introduced a significant step back for PWAs - you now need at least five taps to add a PWA to your home screen.
Android has excellent PWA support - it takes 1 tap to install an app, and the platform support is great, and web apps feel amazing. The gap between the platforms has now increased even further.
My team and I were hoping for better PWA support, but now we are very worried about the direction - it puts us in a difficult situation.
I'm sure many developers face a similar challenge.
What's the current status of PWAs in iOS? Is Apple aiming to improve its support in the near future? Is there a roadmap, tech previews, or betas addressing the issue?
Topic:
Safari & Web
SubTopic:
General
{
"epochTimestamp": 1755169981033,
"expiresAt": 1755173581033,
"merchantSessionIdentifier": "SSH4ADF1D97A60B47FC8537037BE9892237_FF777A9CB5E9EDAB38A01E4EDF71CB5572F19153853DAC70ADC5AA3E75877CB4",
"nonce": "b6f1e016",
"merchantIdentifier": "7C52E6BFA112124092008236BE1EE49791E4E82E9082AD9AC98D55B03A088120",
"domainName": "1960-ikffk.checkout.trypeppr.com",
"displayName": "peppr",
"signature": "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",
"operationalAnalyticsIdentifier": "peppr:7C52E6BFA112124092008236BE1EE49791E4E82E9082AD9AC98D55B03A088120",
"retries": 0,
"pspId": "7C52E6BFA112124092008236BE1EE49791E4E82E9082AD9AC98D55B03A088120"
}
This is generated in the onvalidatemerchant event handler, and passed into session.completeMerchantValidation.
Using a sandbox account with linked cards, the next thing that happens is a "payment not completed" message in the ApplePay popup on the page, and the oncancel event is hit
Inspecting the event, I don't see anything that hints at the issue. There is a sessionError object, but its code is "unknown" and the info object is empty.
When we embed some of the youtube videos are unable to load in the Mobile app but at the same time it works in Website. I need to allow it in both places.
I have tried both embed and native sdk for youtube in iOS.
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?
Topic:
Safari & Web
SubTopic:
General
Tags:
Sign in with Apple REST API
Sign in with Apple
Sign in with Apple JS
After upgrading to Xcode 15.2 or above(Till Xcode 16.2), users are unable to open Site B (HTTP URL) from Site A (HTTP URL) within our Browser app when loaded in WKWebView. Clicking the link to Site B results in a spinning wheel, but the site does not load. This issue is not present when the app is built with Xcode 15.0.1.
Additionally:
Users are connected to a VPN, which is required to access the sites.
Site A and Site B are on different domains (cross-domain request).
Expected Behavior:
Clicking the link to Site B should successfully load the site with user information passed from Site A.
Current Behavior:
Clicking the link results in a spinning wheel, but Site B does not load inside WKWebView.
Technical Details:
Both Site A and Site B use HTTP (not HTTPS).
Site A and Site B have different domains (cross-domain request).
Do not use location.href for transitions. Instead, we temporarily set about:blank in an iframe and then submit data via a form to the target system’s URL within the iframe.
This approach worked in Xcode 15.0.1 but fails in Xcode 15.2 or above.
Users are connected to a VPN, which is required to access the sites.
WKWebview is not receiving navigation delegate callback for Site B
Steps to Reproduce:
Ensure the device is connected to a VPN.
Open the app (using WKWebView) built with Xcode 15.2 or above.
Load Site A (HTTP) within the app in WKWebView.
Click the link to Site B (HTTP), which should open in an iframe.
Observe that a spinning wheel appears, but Site B does not load.
Environment:
Xcode Versions Affected: 15.2 or above (issue present), 15.0.1 (no issue)
iOS Version: All iOS versions
Devices: iPad
Questions:
Has there been any change in WKWebView’s handling of HTTP URLs or VPN-related network traffic in Xcode 15.2?
Are there any new security policies, iframe restrictions, or VPN-related changes in this version that might be affecting this behavior?
Request for Assistance:
Can you confirm if this is a known issue or an intended change?
Are there any workarounds available?
I am trying to build and run a Safari Web Extension from Xcode and I have enabled "Allow unsigned extensions" in Safari settings. However, I see the below pop up:
And, if click on the "Quit and Open Safari Extensions Preferences..." button, the project stops running on Xcode and nothing happens.
What can be the issue? The extension works and runs fine if I get it from the Mac App Store and this only happens when running from Xcode. I even tried completely uninstalling the mac app store version and still facing the same issue.
Hi, I am developing the Click & Read web add-on for Chromium, Firefox and Safari. We use xcrun safari-web-extension-converter tool to generate the Safari add-on, with up-to-date MacBook MacOS, Xcode et Safari : Sequoia 15.3.2, Safari Version 18.3.1 (20620.2.4.11.6), XCode Version 16.0 (16A242d).
We have updated our addon to Manifest v3, having the Background script as Server Worker
"background": {
"service_worker": "background.js",
"type": "module"
}
self.addEventListener("activate", (event) => {
console.info("Service Worker activated", event);
event.waitUntil(
self.registration.pushManager
.subscribe({
userVisibleOnly: true,
applicationServerKey: urlBase64ToUint8Array(
process.env.VAPID_PUBLIC_KEY
),
})
.then(async (subscription) => {
console.info("[Service Worker] Extension is subscribed to push");
const { subscription: savedSubscription } =
await getLocalStorageKeyData("subscription");
if (savedSubscription)
fetchApi({
url: `${API_SERVER_URL}/subscription/remove/${savedSubscription.keys.auth}`,
}); // Remove previous subscription from server on addon activate
currentBrowser.storage.local.set({
subscription: subscription.toJSON(),
}); // Save subscription in local storage
currentBrowser.runtime.setUninstallURL(
`${API_SERVER_URL}/subscription/remove/${
subscription.toJSON().keys.auth
}`
); // Set uninstall URL to remove notification subscription on addon uninstall
fetchApi({
url: `${API_SERVER_URL}/subscription`,
reqInit: {
body: JSON.stringify(subscription.toJSON()),
method: "POST",
headers: {
"Content-Type": "application/json",
},
},
});
})
.catch((error) => {
console.error("Push subscribe error: ", error);
}) // Subscribe to push notifications
);
});
When trying to subscribe the addon instance to our Push server, we get this error : Push subscribe error: NotAllowedError: User denied push permission
Our NodeJS backend is using the web-push librabry : https://github.com/web-push-libs/web-push) to save subscriptions and make notifications push.
By looking for same errors on forums, the best hint I found is that it could be related to the testing is done on localhost (addon is built from XCode onto Safari, and Push server is running on localhost).
Thanks for your help !
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
SwiftUI List Accessibility VoiceOver
Topic:
Safari & Web
SubTopic:
General