Device Tools Hub

All-in-one device snapshot plus focused checkers for your browser, user agent, timezone, pixel ratio, and viewport — all read locally.

All-in-one snapshot of your browser, screen, OS, hardware, locale, network, and preferences.

Instantly detect your browser name, version, engine, OS, and full user agent — read locally in your browser.

See your full user agent string and a parsed breakdown of browser, engine, and OS — copy it in one click.

Detect your current IANA timezone, UTC offset, and live local time from your browser, no IP lookup needed.

See which browser and version you are using right now — detected locally with engine, OS, and device type.

Check your Google Chrome version instantly — or see which Chromium-based browser you are on instead.

See your monitor screen resolution in pixels, plus available area, physical pixels, and orientation.

See your live browser viewport width and height in CSS pixels — updates as you resize the window.

See your device pixel ratio (DPR) live with CSS vs physical resolution — Retina and HiDPI check.

Detect your device vendor, model, and type from your browser — phone, tablet, or desktop.

Find your phone model from user agent and Client Hints — or see if you are on desktop instead.

See your OS name and version instantly — Windows, macOS, iOS, Android, Linux, and more.

Detect CPU architecture (x86_64, arm64, and more) and bitness from Client Hints and user agent.

Find out whether you are on mobile, tablet, or desktop — from user agent, touch, and screen signals.

See a coarse browser fingerprint ID and entropy signals for this tab — computed locally, never uploaded.

Check camera, microphone, geolocation, and other Permissions API states for this site.

Check if your browser and connection are online with navigator.onLine and a reachability probe.

Heuristic VPN and proxy check — compare public IPs and ISP names for tunnel signs.

See whether your connection uses IPv6 or is IPv4-only — HTTP and WebRTC checks.

Test if cookies are disabled or blocked for this site — cookieEnabled and write probe.

Confirm JavaScript is running in this tab — this page requires JS to load.

Detect likely ad blocker extensions via common filter-list bait elements.

Check for carrier-grade NAT (100.64.x.x) signs in WebRTC and public IP data.

Heuristic private/incognito detection: Chromium file-system probe and IndexedDB hints.

Check your device pixel ratio (DPR) live, plus CSS vs physical resolution — confirm Retina/HiDPI scaling.

See your live browser viewport width and height, window size, and DPR — updates instantly as you resize.

Website-side detection demos: browser, device, OS, bots, AI crawlers, ad blockers, VPN, proxy, and WebRTC leaks — all from your tab.

See whether websites can detect your browser and version from user agent and Client Hints.

See what device type, model hints, and screen signals sites can read from your browser.

See whether sites can detect your operating system from UA strings and Client Hints.

Check if automation flags (webdriver, headless UA) make your tab look like a bot to websites.

See if your user agent matches known AI crawler bots — or looks like a normal browser.

Test whether sites can detect an ad blocker via common filter-list bait elements.

See if VPN or tunnel use is likely detectable from public IP, ISP name, and WebRTC.

See if proxy, Tor, or datacenter egress is likely detectable from IP and ISP signals.

See if WebRTC can expose public, local, or IPv6 addresses that sites could harvest.

Browser, canvas, WebGL, audio, and device fingerprint probes — hashed locally so you can audit tracking surface.

Hash UA, locale, timezone, and plugin signals into a browser fingerprint ID — computed locally.

Canvas rendering probe and SHA-256 hash — see how sites fingerprint GPU and font rendering.

WebGL vendor, renderer, limits, and extension hash — GPU fingerprint signals in your tab.

OfflineAudioContext oscillator probe — audio processing differences used in fingerprinting.

Screen, viewport, touch, and hardware hints hashed into a device fingerprint ID.

Multi-threaded Web Worker SHA-256 load test — ops/sec totals, per-thread bars, and thermal throttle hints in your browser.

WebGL2 Mandelbrot fragment shader benchmark — live FPS, min FPS, GPU vendor/renderer, and software-rendering detection in your browser.

WebGPU, WebGL2, and WebNN readiness check with matrix-compute benchmark and software-rendering detection for browser AI workloads.

Browser heap monitor with performance.memory stats, stress allocation in MB chunks, growth chart, and safe auto-abort before OOM.

Convert CAS latency and MT/s to nanoseconds — compare DDR4 vs DDR5 kits, bandwidth estimate, and reverse CL from a target latency.

Convert file size and link speed (Mbps/Gbps) to transfer time — or solve for size or required speed. Binary sizes, decimal bit rates.

Keyboard tester, typing benchmarks, chatter detection, shortcuts, and input diagnostics in your browser.

Visual keyboard tester with key history, press counts, and lock indicators.

Test Arabic keyboard layout labels and key response in RTL view.

Measure WPM and accuracy with timed passages (30s, 1m, or 2m).

Keystroke dwell, flight time, bigram heatmap, and consistency score.

Classify switch sound as linear, tactile, or clicky via microphone FFT.

Find keys that double-register within a configurable threshold.

Estimate Hz from OS auto-repeat timing while holding a key.

Press a combo to see what it does on Windows, macOS, and Linux.

Count spacebar presses in 5, 10, or 30 seconds.

Estimate key press event delay with live MS samples.

Measure initial repeat delay and repeat rate in Hz.

Button tests, CPS benchmarks, polling estimate, LOD drift, aim trainer, DPI and eDPI math — all locally in your browser.

See left, middle, right, and scroll events with live press state.

Timed left-click CPS benchmark with peak rate and local best score.

Watch live pointer travel and speed as you move inside the test pad.

Emoji trail playground — move the pointer to paint and clear anytime.

Flag suspicious double-fires from a single intentional click per button.

Estimate Hz from mousemove timing in the browser (start/stop/restart).

Lift and re-enter the tracking area five times to average cursor drift.

Timed aim trainer: random targets, hits, misses, error, and reaction time.

Burst-friendly CPS with drag across the button and a per-second bar graph.

Right-button clicks per second with context menu suppressed in the arena.

Measure DPI from pointer travel plus keep eDPI while changing DPI.

Compute effective DPI and cm/360 from DPI, in-game sens, and yaw.

Sample pointer jitter with your hand off the mouse for several seconds.

Compare slow vs fast drags of the same distance to spot OS acceleration.

Spin around a center dot and count full rotations with peak spins/sec.

Screen fills, gamma and black/white ramps, touch mapping, PWM lab, ghosting demos, and a refresh-timing probe — all locally in your browser.

Solid colors, dot grid, and fullscreen fills for dead-pixel and uniformity checks.

Estimate animation frame cadence versus display refresh timing in-browser.

Swatches plus grayscale ladders to judge tint and near-black clipping.

Near-black fullscreen ramps to visualize edge glow on IPS and edge-lit LCDs.

Draw tap markers inside the arena to sanity-check mapping across the panel.

Measure live touch force and detect graded pressure on touchscreens and styluses.

Track simultaneous touch points to check multi-touch and palm rejection.

Tap when the panel turns green to gauge touch response and input latency.

Simulated fullscreen brightness toggling across adjustable duty and frequency.

Striped ramps and stepped grays highlight nonlinear gamma and sharpening halos.

Watch the moving box. If you see a trailing blur or color smear behind it, your monitor has ghosting (slow pixel response). Increase speed to expose ghosting more clearly.

Free online black level test. Check whether your monitor crushes shadow detail with 32 near-black patches. Detect incorrect black-level mapping and gamma issues.

Free online white level test. Check whether your monitor clips highlights with 32 near-white patches. Detect crushed whites and incorrect contrast settings.

Free online monitor brightness test. Eleven grayscale steps from black to white reveal brightness, contrast, and gamma issues.

Checkerboard beside 50% gray—squint to see if averaged checker matches solid mid gray for contrast sanity.

Pixels per inch, dot pitch, megapixels, and aspect ratio from resolution plus diagonal.

Simplify pixel dimensions to ratios (for example 3840×2160 to 16:9).

Convert diagonal and aspect ratio into physical width and height in inches and centimeters.

Rule-of-thumb seating distance from screen diagonal plus optional multiplier presets.

Measured animation FPS from requestAnimationFrame timing for qualitative render cadence.

Browser-reported viewport, screen geometry, pixel ratio, and color depth diagnostics.

Cycle solid colors plus checker overlays fullscreen to spotlight uneven wear or risky static UI.

Near-black / near-white ladders and ramps to sniff limited HDMI (16–235) vs full RGB.

Side-by-side sRGB, Display P3, and Rec. 2020 patches to judge wide-gamut rendering on your monitor.

Fullscreen reference fills across gray/black/white and primaries to inspect clouding and tint.

Sample animation-frame spacing and highlight intervals much longer than the median streak.

Lagom-inspired 1px stripes, grille patterns, and text blocks to gauge scaling and sharpening.

Webcam preview and mirror utilities that run in your browser — no upload, no server-side recording.

Live camera preview with resolution, aspect, and FPS readouts; grab PNG snapshots locally.

Mirrored preview with brightness/contrast, rule-of-thirds grid, snapshot download, and fullscreen — all in-browser.

Microphone level checks, relative dB meter, and Web Audio speaker tests including sweeps and bass tones — all locally in your browser.

Live microphone level meter and peak readout via Web Audio—no recording or upload.

Stereo tones, sweep, balance demo, pink noise visualization, and quick L/R/Both playback checks in-browser.

Relative dB SPL style readout from the mic with rolling average—browser-only comparison aid.

Left / right / both / ping‑pong channel check plus logarithmic sweep from 100 Hz to 10 kHz.

Sine presets and sweeps from 20 Hz–200 Hz to stress subwoofers, monitors, or bass‑capable headphones.

Log-scale 20 Hz–20 kHz sweep with hearing-limit markers, manual tone hold, and estimated age ceiling readout.

React to a random-delay 880 Hz beep; tracks last, average, best, and worst over five rounds with false-start detection.

Walk tones through 5.1 or 7.1 channels (or stereo pan fallback) to verify speaker wiring and OS channel mapping.

Live mic autocorrelation tuner: Hz, note, octave, cents, 10 s pitch graph, and 2 s hold-peak for vocals or instruments.

12-step mosquito-tone screening from 8–20 kHz plus manual 8–22 kHz slider to estimate high-frequency hearing age.