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Welcome to HelpTester

Free browser-based diagnostic tools for all your hardware. No installation needed - just click and test.

Quick search: Press Ctrl + K

Input Devices 4 tools

Gamepad
Test buttons, axes & vibration
Keyboard
Check keys & detect ghosting
Mouse
Polling rate & click test
Touchscreen
Multi-touch & precision

Audio & Video 5 tools

Microphone
Audio input & quality
Speakers
Audio output & channels
Webcam
Camera quality & settings
MIDI
MIDI devices & signals
Key Finder
Detect music key & scale

System & Network 4 tools

Stress Test
CPU & GPU load testing
Dead Pixel
Screen pixel detection
Speed Test
Internet speed check
IP Tester
Network info & location

Website Check 4 tools

Favicon Checker
Check website icons & favicons
DNS Checker
Lookup DNS records & verify domain
Favicon Generator
Create favicons from any image
Tag Checker
Detect GTM, Meta Pixel & more

Developer Tools 4 tools

QR Generator
Create custom QR codes
JSON Formatter
Format, validate & beautify JSON
Base64 Encoder
Encode & decode Base64 text/images
AI Unicode Remover
Clean hidden chars from AI text

About HelpTester

Free browser-based toolkit for testing hardware. All tests run locally - no data is stored or sent to servers.

  • No installs - Everything runs in your browser
  • Privacy-first - Tests run locally
  • Accurate - Clear visualizations & metrics

How to Use

  1. Select a tool from the categories above
  2. Follow the on-screen instructions
  3. Review results and diagnostics
  4. Use tips to troubleshoot issues

FAQ

Do I need to install anything?
No. Works with standard web APIs.
Which browsers work?
Chrome, Edge, Firefox, Safari (latest).
Is my data private?
Yes. All data stays in your session.