| tracing-chrome |
| ====== |
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| [](https://crates.io/crates/tracing-chrome) |
| [](https://docs.rs/tracing-chrome/) |
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| # Overview |
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| tracing-chrome is a Layer for [tracing-subscriber](https://crates.io/crates/tracing-subscriber) that outputs traces in Chrome's trace viewer format that can be viewed with `chrome://tracing` or [ui.perfetto.dev](https://ui.perfetto.dev). |
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| # Usage |
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| Add this near the beginning of `main`: |
| ```rust |
| use tracing_chrome::ChromeLayerBuilder; |
| use tracing_subscriber::{registry::Registry, prelude::*}; |
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| let (chrome_layer, _guard) = ChromeLayerBuilder::new().build(); |
| tracing_subscriber::registry().with(chrome_layer).init(); |
| ``` |
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| When `_guard` is dropped, your trace will be in a file like `trace-1668480819035032.json`. |
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| Open that file with [ui.perfetto.dev](https://ui.perfetto.dev) (or `chrome://tracing`) and take a look at your pretty trace. |
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| # License |
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| Licensed under the [MIT license](http://opensource.org/licenses/MIT) |
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| ## Contributions |
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| Unless you state otherwise, any contribution intentionally submitted for inclusion in the work shall be licensed as above. |
