| What it does | Measure anything on your screen with pixel-perfect accuracy
| Free browser tools for random picks, printable practice, wheels and data conversion
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| Stage | Not given
| Startup
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| Founded | Not given
| 2026
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| Based in | Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Smart Auto-Detect identifies your device from a database of 100+ profiles
- Three calibration methods: auto-detect, screen diagonal, and credit card
- Place rulers on any edge of the screen in any combination
- Click-to-measure distances in any direction
- Live cursor position tracking
- Dark mode with automatic system preference detection
- Support for four measurement units: cm, mm, inches, and pixels
| - Random Number Generator with customizable range and quantity
- Random Letter Generator for A–Z selection
- Random State Generator for 50 U.S. states
- Random Number Wheel with editable options and weights
- Worksheet Generator for fraction practice and handwriting
- Country Wheel with 193 UN member states
- Truth or Dare Wheel with family-friendly prompts
- JSON to CSV Converter with delimiter and BOM options
- UUID Generator for v4 or v7 with multiple options
- Cursive Generator for Unicode text conversion
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| What makes it different | - No installation required—runs entirely in your web browser
- Achieves near pixel-perfect accuracy typically within 0.5mm for well-calibrated screens
- Completely free with no ads, account, or limitations
- Calibration saved locally so no need to recalibrate on each visit
- Works on tablets and mobile devices with touchscreen support
| - Everything runs locally in your browser without server uploads
- No account or sign-up required
- Continuous tool corrections and FAQ pages with examples
- Uses browser cryptographic random source with rejection sampling
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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) | 1 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 17 | 0 |
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| Referring domains (Majestic) | 4 | 0 |
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Online Ruler
FPSDEN