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Table of Contents
1. Use Service Worker to manage cache and offline access
2. Configure Web App Manifest to achieve a "class native" experience
3. Optimize first loading performance and improve Lighthouse scores
4. Support push notifications, but don't abuse them
Home Web Front-end H5 Tutorial Progressive Web App (PWA) Best Practices for H5

Progressive Web App (PWA) Best Practices for H5

Jul 16, 2025 am 02:38 AM

To develop a PWA web application with native experience, four key points must be paid attention to: 1. Use Service Worker reasonably to manage cache policies, version updates and cache cleaning; 2. Configure Web App Manifest to achieve installation capabilities and visual consistency; 3. Optimize first-time loading performance to improve Lighthouse scores; 4. Be cautious in supporting push notifications to ensure that user value is preferred. These key points progress from the caching mechanism to the user experience layer by layer, forming the core practice of PWA development.

Progressive Web App (PWA) Best Practices for H5

If you plan to use H5 technology to make a web application similar to a native experience, PWA (Progressive Web App) is a very suitable choice. It combines the openness of the web and the smoothness of the app, and is suitable for providing a more stable, fast and installable access method on the mobile side. To create a truly useful PWA project, there are several key points that must be paid attention to.

Progressive Web App (PWA) Best Practices for H5

1. Use Service Worker to manage cache and offline access

Service Worker is one of the core of PWA, which allows you to control the loading and caching strategies of page resources. Don't just register a SW and it's done. The key is to design its life cycle and cache mechanism rationally.

  • The caching strategy should be flexible : for example, you can use "Cache First" for static resources, and for API data, you can consider "Network First" or "Stale While Revalidate".
  • Version updates should be controllable : after each SW update, you should actively call skipWaiting() and clients.claim() to avoid users staying in the old version for a long time.
  • Avoid cache explosion : Remember to set cache cleaning policies, such as keeping only the last 10 versions of the cache, or clearing expired content regularly.

For example, if a user visits a page, you cache HTML, CSS, and JS, and you can continue to browse even if it is disconnected from the Internet. This is the power of PWA.

Progressive Web App (PWA) Best Practices for H5

2. Configure Web App Manifest to achieve a "class native" experience

The manifest.json file determines whether your website can be "installed" by users to the home screen, and affects the experience details such as the launch screen, theme color, display mode, etc.

  • Do not miss required fields : name , short_name , start_url , display , icons and other basic requirements.
  • The icon size should be complete : at least 192x192 and 512x512 PNG icons are included, suitable for different devices.
  • It is recommended to set to standalone or fullscreen for display mode : remove the browser address bar to enhance immersion.

For example, on Chrome, when a user clicks "Add to Home Screen", manifest will tell the system how to display the app. If you don't configure it properly, you may not even have a prompt.

Progressive Web App (PWA) Best Practices for H5

3. Optimize first loading performance and improve Lighthouse scores

Although PWA supports offline, the speed of the first load is still crucial. Lighthouse is a scoring tool provided by Google. High scores mean better user experience.

You can start from the following aspects:

  • Use lazy loading of pictures and components
  • Compress JS/CSS files and enable Gzip/Brotli compression
  • Enable HTTP/2 to improve transmission efficiency
  • Reduce the number of first-screen requests and merge CSS/JS
  • Set up the appropriate cache header (such as Cache-Control)

These operations may seem trivial, but each point can bring a significant improvement in experience. For example, if the loading time on the first screen is reduced from 5 seconds to 2 seconds, the user retention rate may double.


4. Support push notifications, but don't abuse them

Push API and Notification API are important features in PWA to attract users to visit, but they are also the easiest to be misused. If your app pops up notifications at any time, the user is likely to uninstall it directly.

  • Do not force request permissions before user authorization
  • Push content should be valuable, such as order status updates and important reminders
  • Push frequency should be controlled to avoid harassment
  • The server should support subscription management, including unsubscribe

Implementing push requires back-end cooperation, such as through Firebase Cloud Messaging or self-built push server. But once done, you can stay active like a native app.


Basically that's it. PWA is not complicated, but many details are easily overlooked, especially the cache policy and manifest configuration. If you are starting from the H5 development perspective, these best practices can help you create a truly "sufficient" class native application.

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