Ambient Light Sensor Check
Inspect device light sensor lux readings on supported modern hardware.
Battery Status Inspector
Inspect laptop or mobile battery level and charging status via Web API.
Browser Info Detector
Comprehensive report of browser capabilities, WebGL, cookies, and local storage.
Browser Storage Inspector
Inspect LocalStorage, SessionStorage, and Cookie quotas and data capacity.
Canvas Fingerprint Tester
Inspect how HTML5 canvas rendering produces unique browser fingerprint hashes.
Common Port Numbers Guide
Searchable reference guide for standard TCP and UDP networking ports.
Content Security Policy (CSP) Builder
Generate robust Content-Security-Policy headers to prevent XSS attacks.
Cookie Analyzer
Inspect cookie attributes including Secure, HttpOnly, SameSite, and expiration.
CORS Header Generator
Build Access-Control-Allow-Origin and allowed methods HTTP headers.
Data URI Scheme Debugger
Inspect and decode data:image and data:text URI strings in browser.
Display DPI and PPI Calculator
Calculate exact screen pixel density per inch based on resolution and size.
DNS Records Lookup
Inspect standard DNS record types including A, AAAA, CNAME, MX, and TXT.
HTML5 Feature Compatibility Tester
Audit browser support for Service Workers, WebAssembly, and WebRTC.
HTTP Cache Headers Builder
Configure Cache-Control, max-age, ETag, and stale-while-revalidate directives.
HTTP Headers Reference Guide
Explanations and security best practices for request and response headers.
HTTP Status Codes Lookup
Comprehensive guide to 1xx, 2xx, 3xx, 4xx, and 5xx HTTP response codes.
IDN Domain Decoder
Decode international domain names to prevent homograph phishing spoofing.
JSON-LD Schema Markup Validator
Inspect JSON-LD structured data syntax for Google search rich snippets.
LocalStorage Viewer
View, edit, and format JSON objects stored in your browser LocalStorage.
Media Devices Camera and Mic Tester
Verify connected webcams and microphones with privacy permission toggles.
MIME Types Reference
Search official media types and file extension mappings for web development.
My IP Address Lookup
Check IPv4 and IPv6 network parameters directly from your browser session.
Network Connection Speed Detector
Check effective connection type (4G, 3G, WiFi) and downlink bandwidth.
Online Ping Tester
Evaluate packet latency and jitter to standard internet server endpoints.
Online URL Parser
Deconstruct URLs into protocol, host, port, path, query parameters, and hash fragment.
Open Graph Preview Debugger
Preview how your web page appears when shared across social networks.
Permissions-Policy Header Builder
Control camera, microphone, and geolocation feature permissions on your domain.
Punycode to Unicode Converter
Convert internationalized domain names (IDN) between Unicode and xn-- format.
Query String Parser
Extract and decode key-value query parameters from complex web addresses.
Referrer-Policy Header Builder
Configure strict referrer privacy rules for secure cross-domain links.
Screen Orientation Tester
Detect portrait vs landscape orientation and monitor angle changes.
Screen Resolution Tester
Display exact monitor resolution, viewport dimensions, and device pixel ratio.
Server-Sent Events (SSE) Tester
Listen to EventSource data streams and inspect payload updates in real time.
SSL and TLS Version Explainer
Understand TLS 1.2 vs TLS 1.3 cryptographic cipher suites and handshakes.
Touch Points and Pointer Tester
Test multi-touch input capabilities and pointer device properties.
Twitter Card Preview Tester
Preview Twitter Summary and Large Image cards before publishing.
URL Query Builder
Construct clean parameterized URLs with automated URL-encoding for query params.
URL Tracking Param Cleaner
Strip UTM tags, fbclid, gclid, and analytics tracking from URLs.
User Agent Lookup
Inspect and parse your browser User-Agent header string, OS version, and engine.
Viewport Size Checker
Live responsive viewport width and height monitor updating as you resize window.
Web Audio Diagnostics
Inspect audio output channels, sample rates, and latency on your machine.
Web Latency Tester
Measure millisecond round-trip network ping time and connection stability.
WebGL Capabilities Report
Inspect GPU graphics card hardware renderer and maximum texture sizes.
WebSocket Echo Client
Connect to WebSocket wss endpoints and test real-time bidirectional messaging.
What Is My IP
Instant public IP address lookup with geolocation, ISP, and connection details.