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CEFSharp web application initial load takes more time to load screen in WPF application

Sekar T 21 Reputation points
2025-09-22T16:55:19.2133333+00:00

Hi All,

We have a windows application which is built in WPF application , that integrates the web application using CEFSharp browser. Application has feature to open the browser in Tab, On open the web application in TAB item, first time it takes more time, then subsequent load takes less time comparing with initial load.

To reduce initial load overhead implemented below techniques .

  1. CEF initialization settings at the application start.
  2. Enabled persistent cache. This helps application to load resources from disk for the next time app load.

Even implemented the above mentioned things, still experiencing the noticeable delay on first load. Anyone help us to fix the issue. It looks mainly the web application loading time takes more time to render it.

Thanks

Sekar

Developer technologies | Windows Presentation Foundation
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  1. Starry Night 600 Reputation points
    2025-09-23T03:12:11.8166667+00:00

    You can start from the following aspects:

    1. First, try to see if this time-consuming loading task can be improved to enhance efficiency, which in turn could reduce loading time.
    2. If the loading time is still long, as you said, you can perform some initialization operations when the application starts, and you can also use a loading page to improve the user experience a bit.
    3. Just as you mentioned, you can also enable persistent cache which helps application to load resources from disk for the next time app loading.
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  2. Susmitha T (INFOSYS LIMITED) 755 Reputation points Microsoft External Staff
    2025-09-23T07:37:10.8466667+00:00

    Thanks for reaching out.

     

    1.Analyze Startup Code: Look into your startup code and see if it leverages external resources. Minimize disk I/O and ensure any calls made during startup are essential.

     

    2.Defer Initialization Operations: Consider postponing some initialization tasks until after the main application window shows up. This can help improve the perceived load time as the UI becomes responsive faster.

     

    3.Implement a Splash Screen: If there's an unavoidable delay before your UI appears, you could implement a splash screen that shows while the application is loading. This might enhance the user experience by providing feedback that the application is in the process of starting up.

     

    4.Optimize Module Loading: Reduce the number of modules loaded at startup by combining assemblies if that makes sense for your project. This could minimize DLL loading overhead.

     

    5.Utilize Profiling Tools: Use profiling tools like Process Explorer to analyze which modules are being loaded and identify any that may be unnecessary or causing delays.

     

    6.Check for Cold Start Issues: As you mentioned cold starts do take longer; if your application includes large resources or is dependent on a slow database, look into optimizing those areas.

     
    Kindly refer this document for guidance: Application Startup Time - WPF | Microsoft Learn

     

    Let me know if you need any further help with this. We'll be happy to assist.

    If you find this helpful, please mark this as answered.

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