| What it does | Free browser-based text, developer and math tools that run locally with zero server transmission
| Free on-screen measuring tools that run in your browser
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| Stage | Not given
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| Pricing model | Not given
| Free
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| Key features | - Word Counter - count words including Chinese and Japanese with character counts
- JSON Formatter - validate, pretty-print, and minify JSON
- Case Converter - convert between multiple text casing formats
- Loan Payment Calculator - calculate monthly payments and amortization schedules
- Base64 Encoder/Decoder - encode and decode Base64 text
- Readability Checker - score writing with Flesch Reading Ease and grade levels
- GPA Calculator - calculate semester and cumulative GPA
- Percentage Calculator - find percentages and percentage changes
- UUID Generator - generate cryptographically random UUID v4 identifiers
| - 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
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| What makes it different | - 100% client-side execution with zero server transmission
- No account required, no sign-up, and no artificial limits
- Real-time instant execution with no latency
- Ad-free and independent collection of utilities
- Data never stored or logged on servers
| - 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
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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) | 0 | 2 |
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| Citation Flow (Majestic) | 27 | 18 |
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| Referring domains (Majestic) | 2 | 10 |
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TheTextKit
Online Ruler