Device & Utilities Online Free
Hardware diagnostic and browser utility benchmarks. Verify your camera, microphone, and keyboard keys before meetings or gaming sessions, and use auto-saving browser notepads for immediate thoughts.
Webcam Test & Camera Resolution Diagnostic
Test your computer webcam or phone camera online. Check real-time video stream, maximum supported resolution, FPS, and take a photo.
Microphone Test & Real-Time Audio Visualizer
Test your microphone online with live audio frequency visualizer, decibel volume meter, and instant playback recording.
Keyboard Tester & Key Ghosting Diagnostic
Test every mechanical keyboard key, laptop keyboard, modifier keys, numpad, and detect multi-key ghosting online.
Online Notepad (Auto-Saving & Distraction Free)
Distraction-free auto-saving browser notepad with live word count, local storage persistence, and one-click TXT/Markdown download.
Countdown Timer, Stopwatch & World Clock
High-precision digital stopwatch with lap timers, customizable countdown alarms, and multiple world clocks.
Printable Calendar & Daily Planner Generator
Generate clean printable monthly calendars, habit trackers, and daily productivity planners formatted for A4 print.
CSV to JSON Batch Converter
Convert multiple CSV files to JSON, or JSON to CSV, with delimiter auto-detection, type coercion, and one-click export.