See what your device and browser report: screen size, user agent, cookies, JavaScript support and more. Useful for debugging a site or checking whether a phone supports a feature.

No tools in this category are live yet. The first tools in this category arrive in Phase 1. The full list below shows every tool planned for this category — check back soon.

Tools planned for this category

• Accelerometer Test

  Show motion sensor data.

• Battery Status Checker

  Show battery level/charging.

• Browser Feature Support Checker

  Check WebGL, WASM, WebGPU support.

• Bubble Level (Spirit Level)

  Use your phone as a level.

• Click Speed Test (CPS)

  Clicks per second test.

• Color Blindness Test

  Ishihara-style plates.

• Compass

  Digital compass on phones.

• Cookie & Local Storage Viewer (this site)

  Inspect site storage.

• Dead Pixel Test

  Full-screen colors to find dead pixels.

• Device Orientation / Gyroscope Test

  Show tilt sensor values.

• Eye Test (Snellen Chart)

  Basic visual acuity chart.

• Flashlight

  Turn on phone torch.

• Fullscreen White Screen

  Plain screen light / ring light.

• Gamepad Tester

  Test controller buttons and sticks.

• Geolocation Viewer

  Show your GPS coordinates on a map.

• Headphone Frequency Test

  Test hearing range of headphones.

• Hearing Test (Frequency)

  Check which frequencies you can hear.

• Keyboard Tester

  Test every key on your keyboard.

• Microphone Test

  Check mic with level meter and playback.

• Monitor Color Calibration

  Gamma, black and white level patterns.

• Mouse Click Tester

  Test buttons and double-click.

• Mouse DPI Analyzer

  Estimate mouse DPI.

• Mouse Scroll Tester

  Check scroll wheel.

• Pixel Ruler / Screen Measure

  Measure pixels on screen.

• Reaction Time Test

  Measure your reaction speed.

• Screen Refresh Rate Test

  Measure monitor Hz.

• Screen Ruler

  Measure objects on screen.

• Screen Size (PPI) Calculator

  Calculate PPI from resolution and diagonal.

• Screen Uniformity / Backlight Bleed Test

  Find backlight bleed.

• Speaker Test (Left/Right)

  Test stereo channels.

• Storage Quota Checker

  See browser storage usage and quota.

• Touch Screen Test

  Test multi-touch points.

• Vibration Test

  Test phone vibration patterns.

• Webcam Test

  Check webcam and resolution.

• WebGL Report

  GPU and WebGL capabilities.

About this category

When will these tools be ready to use?

Tools are published in batches, starting with the 40 highest-value tools in Phase 1. Each tool goes live only when it is fully working, tested on mobile, and has its own written guide.

Will my files be uploaded when I use a tool?

No. Every Toolsvine tool runs 100% in your browser. Files, text and images you use in a tool never leave your device.