Weekly Platform News: PWA Issue on iOS, Performance Culture, Anti-Tracking in Browsers

Šime's weekly webplatform.news updates provide developers with timely news on web development standards and supporting tools. This week's highlights include challenges with iOS PWAs, a case study on building a performance culture, and Microsoft's plans for enhanced tracking prevention in Edge.

iOS PWA Restart Issues

Maximiliano Firtman highlights a significant problem: Installed PWAs on iOS cannot be reliably restarted. Closing and reopening them from the recent apps list simply restores the previous state, potentially leaving users stuck if the PWA malfunctions. This issue is further complicated by problems with file input types, which cease to function after backgrounding the app, requiring a full device restart to resolve. While the saved context eventually disappears, requiring a complete restart after a period of inactivity, this isn't a reliable solution.

Cultivating a Performance-Driven Culture at The Telegraph

Gareth Clubb shares The Telegraph's experience in improving website performance. They established a dedicated web performance working group to address systemic issues and foster a performance-centric culture. A key strategy involved deferring all JavaScript using the defer attribute, resulting in a near doubling of their Lighthouse performance score without negatively impacting analytics or advertising. They also removed 1MB of third-party code, implementing a rigorous testing process for new scripts to prevent performance regressions. The proactive removal of untraceable legacy scripts proved successful, as no one contacted them to reinstate them.

Microsoft's Anti-Tracking Plans for Edge

Microsoft's plans to incorporate enhanced tracking prevention in Edge are detailed by Kyle Pflug. This will include automatic blocking of malicious trackers, with an optional setting to block all potential trackers. This addition would make Edge the fourth major browser with built-in anti-tracking capabilities, following Firefox's Content Blocking (formerly Tracking Protection), Safari's Intelligent Tracking Prevention (ITP), and Samsung Internet's Smart Anti-Tracking.

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