JetStream

A JavaScript and WebAssembly benchmark suite that measures how fast browsers start up and run advanced web apps.

FreeProprietaryWeb

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About JetStream

JetStream 3.0 is a benchmark suite hosted on BrowserBench.org that focuses on the kind of code found in advanced web applications. It rewards browsers that start up quickly, execute code quickly and run smoothly, covering both JavaScript and WebAssembly workloads. Bigger scores are better.

It runs in the browser with no installation, and flags runs that used non-standard parameters so results are not compared unfairly. It suits browser engineers and anyone comparing script performance between browsers or machines.

Strengths

  • Covers both JavaScript and WebAssembly
  • Measures startup as well as sustained execution
  • Warns when non-standard parameters make results incomparable

Limitations

  • Measures script performance, not rendering or page responsiveness
  • Scores vary with other load on the machine

Details

Pricing
FreeFree to run in the browser.
License
Proprietary
Developer
BrowserBench
Platforms
Web
How it runs
Web application
Account
Not required
Works offline
No
Best suited for
Comparing JavaScript and WebAssembly performance across browsers
Last verified
Added
Provenance
Selected from the TechWalrus Resource Hub (Web Browsers); facts checked against the developer's own pages, 2 sources on file.

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