Fun Tools

Fun tools including crash simulators, system upgrade pranks, mental math challenges and reaction tests.

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.

Fun Tools

Fun tools including crash simulators, system upgrade pranks, mental math challenges and reaction tests.

Computer Crash Simulator

Free online computer crash simulator for fake Windows BSOD, macOS kernel panic, Linux crash, and Android ANR screens. Full-screen display with click-to-exit.

System Upgrade Simulator

Free online system upgrade simulator for fake Windows Update, macOS update, Linux apt upgrade, and Android update screens. Full-screen and click-to-exit.

Mental Math Test

Free online mental math speed test. Test your arithmetic speed and accuracy with addition, subtraction, multiplication and division.

Reaction Speed Test

Free online reaction speed test tool. Test your reaction time from signal to click, track your best score and average, challenge your limits.