Utility Toolbox
A collection of handy tools for development, network engineering, fast charging analysis, and hardware purchasing. Click any card to start using.
USB Naming Specification Guide→
End the confusion! Instantly lookup the real transfer speeds and naming conventions for USB 3.2, USB4, and Type-C.
Monitor Buying & Display Guide→
Analyze resolution, refresh rate, color depth, and DSC compression to calculate required monitor bandwidth and connector specs.
PSSD Performance & Power Simulator→
Simulate the bottleneck effect when installing M.2 SSDs into external enclosures, calculating thermal throttling risks and power supply deficits.
Screen & Dead Pixel Test→
Real-time analysis of physical resolution, refresh rate, and HDR color gamut, featuring dead pixel checks, color banding, motion blur, and HDR peak brightness testing.
Mouse Performance & Button Tester→
Supports double-click detection, scroll direction, DPI estimation, Polling Rate tests, and microswitch switch diagnostics.
Keyboard Key & Hardware Tester→
NKRO testing, key latency, and chatter checks to quickly diagnose stuck or double-clicking keys.
Gamepad & Controller Diagnostic→
Supports Xbox, PlayStation, Switch Pro, and various third-party controllers with polling rate, joystick circularity, and vibration tests.
Touchscreen Test→
Test touchscreen dead zones, multi-touch limits, and sampling/refresh rates.
Stylus & Tablet Test→
Test Apple Pencil and drawing tablet pressure, tilt angle, and sampling rates.
Audio Tone & Burn-in Tester→
1Hz-20kHz tone generator, real-time oscilloscope, and stereo diaphragm burn-in engine.
PD Fast Charge Protocol Online Simulator→
In-depth deconstruction of USB PD 3.1 / 3.2 decoy voltages, E-Marker chip limits, and wattage allocation logic.
WITRN K2 Power Analyzer→
Connect without downloading! Supports up to 100Hz real-time voltage/current waveform plotting, auto-triggering, and CSV exports.
WITRN K2 PD Protocol Analyzer→
Capture real-time data and monitor PD packets from K2, deconstructing USB PD 3.1 / EPR packet details.
JPG Image Online Compressor→
Freely adjust quality and compression ratio using high-efficiency encoding to significantly reduce file sizes for photos and web assets.
PNG Image Online Compressor→
Powered by the UPNG engine, offering PNG8 lossy and full-color lossless modes to perfectly preserve transparent backgrounds.
Image Format Converter→
Supports batch conversions between PNG, JPG, and WebP formats. Processed entirely locally in your browser—fast, secure, and quality-preserving.
AI Image Upscaler→
Powered by local browser GPU and deep learning super-resolution models to upscale photos without cloud uploads.
Image Background Remover→
Runs locally on your images with AI edge detection. Simply stroke with the brush to instantly extract subjects perfectly.
EXIF Privacy Cleaner→
Strip GPS, timestamp, and device info locally to prevent privacy leaks.
Color Code & Palette Tool→
Real-time conversions across HEX, RGB, HSL, HSV, and CMYK. Supports palette selection, fine-tuning, color history, and monochromatic shade generation.
QR Code Scanner & Generator→
Real-time camera and image scanning for QR Codes and 1D barcodes, with support for barcode generation and downloads.
BPM Tapper & Metronome→
Supports real-time BPM tapping, seamless metronome sync, data analysis, and timing error indicator bars.
Dynamic Lyrics Player→
An immersive music experience replicating Apple-style glowing lyrics rendering with real-time Romaji support.
Lyrics Editor→
A professional LRC creation workshop featuring auto-vocal detection, manual fast-forward fine-tuning, and silky-smooth millisecond timing.
NFC Reader & Writer→
Easily read, edit, and write NDEF tags and cards via Web NFC API
Camera Hardware Probe→
Inspect hardware-level specs of all front/rear lenses, including macro, ISO, and torch limits
Geomagnetic Compass→
Uses built-in mobile magnetometers to provide real-time absolute heading, tilt detection, and ambient magnetic field strength.
5GHz Wi-Fi Channel Optimizer→
Simulate DFS radar interference and avoidance, smartly recommending the cleanest 160MHz band using interference blacklists.
Subnet Mask Calculator→
Three-way real-time syncing for subnet mask, CIDR, or desired host count. Auto-outputs network address, broadcast address, and wildcard mask.
Bit & Storage Converter→
Quick base conversions, data unit calculations, and real-time Mbps bandwidth synchronization.
Real-Time Currency Converter→
Supports live conversions for 160+ global currencies, offering a customizable list and smooth drag-to-reorder gestures.
Overseas Credit Card Fee Calculator→
Accurately breaks down 1.5% foreign transaction fees and reward caps, with DCC exchange rate warnings and refund profit/loss simulations.
Modular Text Codec Blocks→
Build a custom text processing pipeline by combining encoding, encryption, and hashing blocks.
OpenCC Chinese Converter→
Instant conversion! Automatically handles regional terms with 100% client-side privacy.
File Hash Verifier & Calculator→
Calculate and verify MD5, CRC32, SHA-1/256/512, and HMAC online. 100% client-side multi-threaded processing for large files.
RegEx Generator→
Select smart POSIX blocks and precise matching with live layer overlay highlighting. Export modular multi-language code snippets with one click.
NFC UID / Card Number Converter→
Convert hex, decimal, and byte order instantly, with byte colors, card number comparison, and batch conversion.