UD5 Toolkit
Hand‑Eye Coordination Test – Online Click Targets Game
Click moving targets as fast as possible. Score time and accuracy. Fun benchmark.
Online Testing & Quizzes
7+ toolsSnellen Eye Chart – Online Visual Acuity Test Simulation
Display a Snellen chart on screen and mark distance for a fun self-test. Not a replacement for professional exam.
Online Hearing Range Test – Frequency Sweep Hz
Play a frequency sweep from 20Hz to 20kHz. See where your hearing cuts off. Headphones needed.
Online Hearing Test – Frequency Pitch Perception
Play pure tones at various frequencies to estimate your hearing range. Simple and educational.
X‑Frame‑Options Tester - Online Clickjacking Defense
Check if a URL can be embedded in an iframe. Test your site’s defense against clickjacking. Browser‑based.
Finger Reaction Time Test – Online Tap When Color Changes
Wait for the box to turn green, then tap as fast as possible. Measure milliseconds. Compete with friends.
Astigmatism Self‑Check Chart – Online Dial & Lines
Display an astigmatism dial and instructions for self-assessment. Educational, not a medical diagnosis.