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High-Performance Baseline for Web Apps Community Group

The High-Performance Baseline Community Group aims to enhance the diversify the ecosystem of Web user agents by enabling a baseline or subset of standards to increase efficiency and optimize the user experience on Web and WebView-based apps while maintaining compatibility with existing standards. The subsets will allow the implementation of lighter and more efficient user agents for specific purposes (e.g., MiniApps, IoT applications, and cross-platform apps, among others). This forum intends to gather vendors of embedded browsers, hybrid cross-platform app frameworks, JS engines and others interested in providing specific scenarios and use cases to define proper subsets of the specifications and even propose additional activities to existing Working Groups.

This CG expects good alignment with other incubation groups, including WebViews CG and WICG, and standardization groups (e.g., CSS WG, Web Applications WG, and WHATCG, among others). After getting support for this idea, more specific goals and a tentative timeline will be defined in the charter.

Group's public email, repo and wiki activity over time

Note: Community Groups are proposed and run by the community. Although W3C hosts these conversations, the groups do not necessarily represent the views of the W3C Membership or staff.

Chairs, when logged in, may publish draft and final reports. Please see report requirements.

Call for Participation in High-Performance Baseline for Web Apps Community Group

The High-Performance Baseline for Web Apps Community Group has been launched:


The High-Performance Baseline Community Group aims to enhance the diversify the ecosystem of Web user agents by enabling a baseline or subset of standards to increase efficiency and optimize the user experience on Web and WebView-based apps while maintaining compatibility with existing standards. The subsets will allow the implementation of lighter and more efficient user agents for specific purposes (e.g., MiniApps, IoT applications, and cross-platform apps, among others). This forum intends to gather vendors of embedded browsers, hybrid cross-platform app frameworks, JS engines and others interested in providing specific scenarios and use cases to define proper subsets of the specifications and even propose additional activities to existing Working Groups.

This CG expects good alignment with other incubation groups, including WebViews CG and WICG, and standardization groups (e.g., CSS WG, Web Applications WG, and WHATCG, among others). After getting support for this idea, more specific goals and a tentative timeline will be defined in the charter.


In order to join the group, you will need a W3C account. Please note, however, that W3C Membership is not required to join a Community Group.

This is a community initiative. This group was originally proposed on 2025-01-09 by Martin Alvarez-Espinar. The following people supported its creation: An Qi (Angel) Li, Chunming Hu, Xiaoqian Wu, Ruoxi Ran and Martin Alvarez-Espinar. W3C’s hosting of this group does not imply endorsement of the activities.

The group must now choose a chair. Read more about how to get started in a new group and good practice for running a group.

We invite you to share news of this new group on social media and other channels.

If you believe that there is an issue with this group that requires the attention of the W3C staff, please email us at site-comments@w3.org

Thank you,
W3C Community Development Team