| What it does | Free on-screen measuring tools that run in your browser
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| Stage | Not given
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| Founded | Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Actual-size ruler in cm, mm and inches
- Bank-card and screen-diagonal calibration
- Top, left and right rulers with drag-to-measure readout
- Full-screen mode and browser-zoom warning
- Image measurement tool
- Length unit converter
- Touch dragging support for phones and tablets
- Local storage of calibration without server uploads
| - Dictionary-based counting using 126,044-word CMU Pronouncing Dictionary
- Estimated word flagging with spelling-based fallback
- Per-line syllable counts for poetry forms
- Haiku (5-7-5), tanka (5-7-5-7-7), cinquain (2-4-6-8-2) presets
- Readability metrics: syllables per word and per sentence
- Live syllable count as you type
- Text and CSV export options
- Share links with text in URL fragment
- Runs entirely in browser with no server uploads
- Word lists for one through six-syllable words
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| What makes it different | - Calibration step compensates for browsers' inability to detect physical display size
- ISO/IEC 7810 ID-1 standard bank card calibration ensures reproducible accuracy
- All calculations run locally in your browser with no data sent to servers
- Works on any device with a browser and JavaScript enabled
- Content follows standards-based principles with no invented precision or fake reviews
| - Tells you which counts are exact dictionary lookups and which are spelling-based estimates
- Per-line syllable counts with deviation indicators for poetry
- All processing happens in your browser with no data sent to servers
- Built by a single developer with no ads, accounts or funding
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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) | Not checked yet ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 2 | 0 |
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| Citation Flow (Majestic) | 18 | 17 |
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| Referring domains (Majestic) | 10 | 2 |
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Online Ruler
Syllable Counter