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Request for developer feedback: controlling the performance of embedded web content
- The proposed feature aims to give developers more control over the performance impact of embedded web content by introducing new DocumentPolicy configurations and reporting violations to the embedder.
- Developers can apply different document policies such as 'basic', 'early-script', 'globals', and 'script' to control the performance impact of embedded content.
- The 'basic' policy includes constraints on oversized assets and uncompressed resources, while the 'early-script' policy focuses on optimizing JavaScript before user interaction.
- The 'globals' policy sets limits on media and system resource usage, while the 'script' policy enforces restrictions on JavaScript during and post-load.
- Violations will be reported through the Reporting API, allowing developers to address performance issues and optimize user experiences accordingly.
- An example scenario illustrates how developers can align with content producers and apply Document Policy directives to minimize the performance impact of embedded content.
- Developers can set policies at the document level using headers or individually per iframe to enforce performance constraints.
- Feedback is welcomed on the proposal to enhance app performance and user experience, with developers encouraged to share thoughts and suggestions for shaping the API.
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