| What it does | A versatile collection of free online tools including image resizers and croppers, unit converters, calculators, color converters, and much more — all in one place
| Measure your reaction time and see where you rank against everyone else on the same device
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| Pricing model | Free
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| Key features | - Image Resizer - resize images while maintaining aspect ratio and choosing output format
- Batch Image Resizer - resize multiple images at once and download as ZIP
- Image Cropper - crop, flip, or rotate images
- QR Code Generator - generate custom QR codes with various styles and colors
- Color Converter - convert between RGB, HEX, HSL, HSV, and CMYK formats
- Unit Converters - pressure, temperature, time, length, mass, volume and more
- Word Counter - count words and characters in text
- PDF to Text Converter - extract text from PDF files
- Calorie Calculator - calculate daily caloric needs using multiple formulas
- WCAG Color Contrast Checker - check color contrast according to WCAG 2.1 guidelines
| - 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
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| What makes it different | - All tools are free to use
- Comprehensive collection in one place
- Batch processing capabilities for images
- Real-time color preview in converters
| - 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
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| Free plan | Not given
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| Open source | 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) | 20 ● no change since last check | 1 ● no change since last check |
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| Trust Flow (Majestic) | 10 | 2 |
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| Citation Flow (Majestic) | 20 | 22 |
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| Referring domains (Majestic) | 28 | 9 |
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NiftyUtils
BenchSelf