Hardware Testing

Hardware testing tools for keyboards, mice, monitors, microphones, cameras and system diagnostics.

Quick Access

JSON FormatterFree online JSON formatter, validator, minifier, and tree viewer with syntax highlighting. Beautify JSON, detect errors, and clean up data in your browser.

Image Compression ToolFree online image compressor for JPEG, PNG, and WebP. Adjust quality and dimensions while local browser processing protects your privacy.

PDF to Word ConverterFree online PDF to Word converter. Export .docx or .doc files with layout and image preservation, one-click conversion, and automatic file deletion.

Base64 Encoder & DecoderFree online Base64 encoder and decoder for UTF-8 text, Unicode, and images. Convert Base64 instantly with local browser processing and no signup.

Hardware Testing

Hardware testing tools for keyboards, mice, monitors, microphones, cameras and system diagnostics.

Keyboard Test

Free online keyboard test with live key detection, key codes, a virtual keyboard, and key history. Check every key directly in your browser.

Mouse Test

Free online mouse test for buttons, scroll wheel, double-click behavior, pointer position, and click history. Check your mouse in the browser.

Refresh Rate Test

Free online screen refresh rate test tool. Detect actual monitor refresh rate through animation frame rate, supports 60Hz, 120Hz, 144Hz and higher.

System Check Tool

Free online system check tool. Detect your OS, browser, screen resolution, hardware config, and network status. Privacy-first local browser processing.

Decibel Meter

Free online decibel meter, measure ambient noise levels in real time with gauge display, noise level classification, and statistics

Microphone Test

Free online microphone test with live volume, waveform, and spectrum analysis. Check recording playback, device info, and browser mic permissions.

Camera Test

Free online camera test with live preview and photo capture. Check resolution and device info with privacy-friendly browser processing.