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Benchmark Builder

Run JavaScript speed benchmarks across five workloads with ops/sec scores. Prove which device runs faster — local measurement, free, no signup.

100% Local Browser Native

How to Use the Benchmark Builder

1. Pick a workload

Integer, float, sort, string, or mixed.

2. Set duration

1–5 seconds per run.

3. Read ops/sec

Higher wins; history keeps 20 runs.

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Frequently Asked Questions

What workloads run?

Integer math, floating point, array sorting, string ops, and a mixed workload — each for the seconds you set (1–5s). No custom snippets or warmup settings.

What do ops/sec mean?

Operations per second with a speed ranking: higher wins. Compare relative gaps, not absolute numbers across machines.

Micro vs real world?

Micro-benchmarks mislead when the hot path differs — profile real usage first, benchmark only proven bottlenecks.

Is code uploaded?

No — benchmarks run locally in your browser. Nothing leaves your device.

What score crosses from Fast to Very Fast?

30,000 ops/s: Fast starts at 15,000 (about 75th percentile), Very Fast at 30,000 (about 90%), Extreme at 60,000 (about 99%). Runs last 1-5s in 0.5s steps; history keeps the last 20 runs.

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Last updated October 2026