Tool Studio14 tools in this category
Test your internet connection speed instantly — ping, download, and upload, all measured live in your browser. No app install, no sign-up. Free, unlimited use.
Test if every key on your keyboard works. Press any key and watch it light up on the on-screen layout — spot stuck, dead, or unresponsive keys instantly. Free, works entirely in your browser.
Instantly see your public IP address. Detects IPv4 or IPv6, one-click copy. Free, no sign-up, no tracking beyond what your connection already reveals.
Scan and decode QR codes from images or camera instantly. Extract URLs, text, contact info, WiFi credentials, and more from any image containing a QR code or barcode. Fast, secure, and supports multiple formats.
Test your device camera, capture photos with live preview, and download images instantly. Perfect for testing camera functionality.
Complete audio testing tool - test your microphone with live waveform visualization and test left/right speakers by recording and playing back audio through specific channels.
Comprehensive token tool to decode, verify, and generate JWT (JSON Web Tokens) and PASETO (Platform-Agnostic SEcurity TOkens) instantly. View header, payload, and signature sections with syntax-highlighted JSON. Generate new tokens with custom payloads. Perfect for developers debugging authentication tokens, API tokens, and bearer tokens. Features instant real-time decoding as you type, support for both JWT and PASETO token formats, token generation with custom algorithms (HS256, HS384, HS512), three-part visualization showing header/version, payload, and signature/footer separately, color-coded JSON syntax highlighting for easy reading, one-click copy to clipboard for each section, and complete client-side processing for maximum security. All token processing happens entirely in your browser - tokens are never transmitted to any server, ensuring complete privacy and security. Supports all standard JWT formats and PASETO v2/v4. Ideal for debugging authentication flows, inspecting API tokens, generating test tokens, understanding token structure, validating token claims, and learning about modern authentication. No installation or registration required.
Look up A, AAAA, CNAME, MX, TXT, NS, and CAA DNS records for any domain. Queries a public DNS-over-HTTPS resolver directly from your browser — no data is sent to our servers.
Test if your mouse buttons, scroll wheel, and double-click all work correctly. Press left, middle, or right click and watch it register, and measure your double-click speed. Free, works entirely in your browser.
See your screen resolution, browser viewport size, device pixel ratio, and estimated DPI, live. Free, works entirely in your browser.
See your browser name and version, rendering engine, operating system, and full user-agent string, along with language, viewport, and cookie settings. Free, works entirely in your browser.
Measure your browser's live frames-per-second and get an estimate of your monitor's refresh rate. Free, works entirely in your browser.
Cycle your screen through full-screen white, black, red, green, blue, cyan, magenta, and yellow to spot dead or stuck pixels and check for backlight bleed. Free, works entirely in your browser.
Test your click speed (CPS) and double-click speed. Pick a duration, click as fast as you can, and see your live clicks-per-second. Free, works entirely in your browser.