Free Online Tools for Testing, Creating & Developing
StarryRing brings hardware diagnostics, media converters, developer utilities, calculators, and generators together in one practical toolbox.
Open the tool you need and get to work in your browser. No installation or account required.
↑ Click to input signal preview (schematic demonstration, not actual measured data)
Turn peripheral problems into visible feedback
StarryRing started with a practical question: is the problem in the game, the system, or the input device?
Our mouse and keyboard tests help you check clicks, keys, timing, jitter, and rollover directly in the browser.
One toolbox for everyday browser tasks
Choose a category to test hardware, work with media, inspect development data, or generate the values you need.
Hardware Tests
Check your mouse, keyboard, camera, microphone, speakers, and screen with instant browser-based diagnostics.
Image & Audio Tools
Convert images, audio, and video; record sound; remove backgrounds; and create icons for apps and websites.
Developer Tools
Format JSON, test APIs and WebSocket connections, check network latency, and generate QR codes.
Calculators & Generators
Calculate finances, generate secure passwords and keys, create random values, and work with checksums or encryption.