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Troubleshooting

Useful information for debugging and errors related to web push notifications.

List of HTTP status codes and errors returned by web push services

November 28, 2022 by collimarco

A list of all the official documentation provided by the push services about the HTTP status codes and errors that can be returned. When an application sends a notification to a browser push service, it should check the status code returned and take appropriate actions.

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Categories Troubleshooting, Web Push Notifications Tags deliverability, push-api Leave a comment

How to change the scope of a service worker

October 20, 2022 by collimarco

The scope of a service worker defines when it is active and usually depends on the path where it is located. However in this tutorial we’ll see some directives that allow to change the default scope of a service worker, regardless of its location.

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Categories Troubleshooting, Web Push Notifications Tags service-worker Leave a comment

“This site has been updated in the background”: what is this notification?

September 2, 2022 by collimarco

If you subscribe to the notifications of some websites, you may sometimes see a strange notification with this content: “This site has been updated in the background”. What does that mean? And if you are the website owner, how can you prevent that notification?

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Categories Troubleshooting, Web Push Notifications Tags push-api, web-notifications Leave a comment

Chrome Push Notifications: This site has been updated in the background

June 21, 2022April 11, 2022 by collimarco

What can you do if you receive that notifications? What does it mean? How can you fix it?

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Categories Troubleshooting, Web Push Notifications Tags push-api, web-notifications Leave a comment

Web Push errors explained (with HTTP status codes)

June 22, 2022April 1, 2022 by collimarco

When you send a web push notification to a browser push service, you may get an HTTP status code that represents an error.

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Categories Troubleshooting, Web Push Notifications Tags deliverability, push-api, vapid Leave a comment

Debugging web push notifications on a specific device

June 22, 2022February 3, 2022 by collimarco

This article describes a simple and effective method for debugging web push notifications on a specific browser using Pushpad.

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Categories Pushpad, Troubleshooting Tags deliverability, javascript-sdk, push-api, targeting, web-notifications Leave a comment

Web Push Error 410: the push subscription has expired or the user has unsubscribed

June 22, 2022January 19, 2021 by collimarco

Subscribing users to web push notifications on your website is not enough: you also need to manage and renew their push subscriptions properly over time, otherwise you will lose subscribers.

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Categories Troubleshooting, Web Push Notifications Tags push-api, subscription 10 Comments

Web push notifications not shown / not delivered to browser

June 22, 2022December 7, 2018 by collimarco

Why some web push notifications are not delivered to the browser? Why some notifications are not displayed to the user?

A notification that is successfully delivered to the browser push service, may not reach the end user for various reasons:

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Categories Troubleshooting, Web Push Notifications Tags deliverability, push-api, web-notifications Leave a comment

Updating the service worker

June 22, 2022December 1, 2018 by collimarco

Are you stuck with an old version of the service worker or your imported scripts are not being updated as you expect? This guide shows you how to ensure that your service worker and the imported scripts are updated in a timely manner.

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Categories Troubleshooting, Web Push Notifications Tags service-worker Leave a comment

Web push subscription age affects delivery rates

June 22, 2022September 26, 2018 by collimarco

This article investigates one of the reasons that negatively impact delivery rates for web push. First it shows that web push subscriptions can last many years without expiring, then it proves a negative correlation between the age of a web push subscription and its expected delivery rate.

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Categories Troubleshooting, Web Push Notifications Tags deliverability, push-api Leave a comment
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