4 micro-benchmarks · ~6 seconds

How fast is this browser?

Four quick tests covering arithmetic, drawing, DOM and allocation. Numbers are normalised so a typical mid-range laptop scores around 1000.

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JS score

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GFX score

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DOM score

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MEM score

Composite

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idle

JS arithmetic

queued

Loop-heavy math, string concat, hashing.

Canvas drawing

queued

DOM mutations

queued

Memory allocation

queued

Typed-array fill, sort, copy, and GC pressure.

Time-budgeted

Each test runs for a fixed wall-clock budget. Score = work completed / budget.

Visible work

Side effects keep the JIT honest — no dead-code elimination tricks.

Local-only

No telemetry. Scores live in your browser's localStorage.

History

When	JS	GFX	DOM	MEM	Composite