A handy set of browser-based tools I use commonly in my day to day research.
| Page | Purpose |
|---|---|
| QR Generator | Turn a URL into a scannable, high-resolution QR code. |
| Date Calculator | Add or subtract days, weeks and months from a chosen date. |
| Percentage Calculator | Quickly solve: “What is X % of Y?”, “X is what % of Y?”, and percentage change from one value to another. |
| Effect-Size Calculator | Provides summary statistics into Cohen’s d, Hedges’ g, and odds/risk ratios. |
| Number Needed to Treat/Harm Calculator | Treatment and control event counts into absolute risk reduction and NNT/NNH. |
| Plain‑Language Readability Checker | Scores text with Flesch, SMOG, and Gunning Fog and colour-codes sentences by reading level. |
| JSON Viewer | Paste any JSON and explore it instantly through an interactive, expandable tree view. |
Drop me an email if you'd like any more adding.