Speedometer 3.0
The facts below are what the maker publishes about Speedometer 3.0, checked and dated. Our editors have not written about it yet.
The facts
Each one read from Speedometer 3.0's own pages, with the date it was checked.
What it does
- Accuracy guidance
- The instructions recommend using a clean browser profile, closing other tabs and windows, and keeping the benchmark page focused during a run.checked 12 Oct 2026
- Current version notice
- The Speedometer 3.0 page recommends running Speedometer 3.1, which it says supersedes this benchmark.checked 11 Oct 2026
- Feedback
- The project directs users with feedback or questions to file issues on GitHub.checked 12 Oct 2026
- Frameworks and libraries
- The listed workloads include React, Angular, Vue, Svelte, Preact, Lit, Backbone, jQuery, and Web Components.checked 11 Oct 2026
- Method limitation
- Speedometer does not attempt to measure concurrent asynchronous work such as work performed in Web Workers.checked 12 Oct 2026
- Methodology limit
- Speedometer does not attempt to measure concurrent asynchronous work such as work in Web Workers.checked 11 Oct 2026
- Open source
- Speedometer is developed as an open source project under a multistakeholder governance model involving three browser engine projects.checked 12 Oct 2026
- Other workloads
- Workloads include editing rich text, rendering charts, and reading a news site.checked 12 Oct 2026
- Purpose
- Speedometer 3.0 measures web application responsiveness by timing simulated user interactions across workloads.checked 12 Oct 2026
- Result export formats
- JSON; Classic JSON; CSVchecked 22 Sep 2026
- Results
- The page provides detailed results and options to copy or download JSON and CSV results.checked 12 Oct 2026
- Technologies tested
- The listed workloads include React, Angular, Vue, Svelte, Lit, CodeMirror, TipTap, Chart.js, and Observable Plot.checked 12 Oct 2026
- Test conditions
- The instructions recommend a clean browser profile because extensions and non-default browser settings can have a large impact on scores.checked 11 Oct 2026
- Todo workload
- The todo list workload measures the time to add, complete, and remove 100 items.checked 12 Oct 2026
- Todo workloads
- Its todo workloads time adding, completing, and removing 100 items across implementations using different techniques and frameworks.checked 11 Oct 2026
- Usage limit
- The maker says Speedometer should not be used to compare the performance of different JavaScript frameworks.checked 11 Oct 2026
- Use limitation
- The project says Speedometer should not be used to compare the performance of different JavaScript frameworks.checked 12 Oct 2026
- Version status
- The Speedometer 3.0 page says Speedometer 3.1 supersedes this benchmark.checked 12 Oct 2026
- Viewport
- The benchmark page says a viewport of at least 850 by 650 pixels is recommended for the most accurate results.checked 12 Oct 2026
- Workload areas
- to-do lists; rich-text editing; chart rendering; news-site navigationchecked 22 Sep 2026
Where it runs
- Browser access
- The project says the benchmark should run in every modern browser by visiting a normal web page.checked 12 Oct 2026
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