| What it does | Measure your reaction time and see where you rank against everyone else on the same device
| Free, private browser tools for images, PDFs, calculators, text, code, and random generators
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Reaction time measurement with five trials and median scoring
- Device-specific percentile ranking (mouse, trackpad, touchscreen)
- Exportable score history stored in your browser
- Embeddable tests for third-party websites
- Anonymous population distribution comparison without tracking
| - Image compression, conversion, resizing, and cropping
- PDF merging, splitting, and conversion tools
- Date and time calculators including age, timezone, and countdown
- Over 55 financial and practical calculators
- JSON formatter and developer utilities
- Mobile-first responsive design with no installation required
- Instant results with no waiting time
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| What makes it different | - Device-specific rankings that account for hardware differences like screen refresh rate and input latency
- No accounts, no tracking, and no third-party scripts or advertising
- Transparent methodology with published reference data sources and clear limitations
- Fully embeddable tests with no installation or sign-up required
- Median scoring from multiple trials to reduce noise and account for natural variability
| - All tools run entirely in your browser with zero data uploaded to any server
- Completely free with no accounts, signups, or hidden fees required
- Lightning-fast processing using local device computing power instead of servers
- Related tools can share data via Send To buttons without copy-paste workflow
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 2 ▲ +1 (up) since last check | 1 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 2 | 0 |
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| Citation Flow (Majestic) | 22 | 17 |
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| Referring domains (Majestic) | 9 | 9 |
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BenchSelf
Randomly.online