80+ tools across 12 categories including network diagnostics, DNS, security analysis, development and daily utilities
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Quickly check HTTP status codes, response time and server info for any URL.
Test network connectivity and latency by pinging a host from the server.
Trace the route packets take to reach a destination host.
Combine ping and traceroute for comprehensive network diagnostics.
Test WebSocket connections, send and receive messages in real-time.
Scan TCP ports on a target host to find open services.
Fetch and view the full HTML source code of any webpage.
Send multiple HTTP requests concurrently for load testing.
Check whether a website supports the HTTP/2 protocol.
Check if your network supports IPv6 and view your IP addresses.
Query authoritative name servers directly for accurate DNS records.
Resolve domain names via DNS-over-HTTPS for secure resolution.
Look up all common DNS record types for a domain at once.
Check DNS record propagation from global locations.
Find the domain name associated with an IP address.
Check if DNSSEC security extensions are enabled for a domain.
Parse SPF records to analyze authorized email senders.
Query Certification Authority Authorization records.
Analyze the full SSL certificate chain of a website.
Check security headers like HSTS, CSP, X-Frame-Options.
Detect open redirect vulnerabilities by fuzzing multiple redirect parameters.
Discover subdomains via Certificate Transparency logs.
Find the geographic location of any IP address.
Query BGP routing info with AS relationship visualization and prefix hijack risk assessment.
Calculate network, broadcast, and host range from CIDR notation.
Convert an IP address range to CIDR notation.
Look up domain and IP registration info with timeline visualization, info cards, and expiry countdown.
Query registration data via RDAP with collapsible JSON tree view and WHOIS side-by-side comparison.
Discover local network IPs via WebRTC and collect a browser fingerprint.
Capture and inspect HTTP request/response with waterfall timing and code generation.
Modify and replay HTTP requests. Compare original vs modified responses side-by-side.
Trace request timings (DNS, TCP, TLS, TTFB).
Beautify, minify, and validate JSON data.
Test regular expressions against sample text in real-time.
Decode and inspect JWT tokens without sending data to a server.
Visually build cron schedule expressions with calendar preview.
Visual cron expression builder with natural language, next executions, and presets.
Calculate Linux file permission numbers.
Build curl commands with an interactive form. Set method, headers, body, and options.
Send HTTP requests and inspect responses.
Generate UUID v1, v4, v5 identifiers in bulk.
Encode or decode HTML entities.
Parse and analyze URL components.
Write markdown and see the rendered preview in real-time.
Advanced side-by-side text comparison with unified diff output.
Convert images to Base64 data URLs, or decode Base64 back to image preview. Supports EXIF extraction and multiple output formats.
Format and beautify SQL queries.
Format, minify, validate, and convert XML data. XPath query support with syntax highlighting.
tools.yaml-json-converter.desc
Online HTML/CSS/JS editor with live preview. Download complete HTML files.
Convert colors between HEX, RGB, HSL formats.
tools.http-status-ref.desc
Encode text or data to Base64 format.
Decode Base64 encoded data back to text.
Generate MD5, SHA-1, SHA-256, SHA-512 hashes.
Generate bcrypt hashes and verify passwords.
Generate, analyze, and create Diceware-style passphrases with real-time strength feedback.
AES encryption, RSA key generation, and random value generation. All client-side using Web Crypto API.
Verify file hashes by drag-drop upload. Auto-detects algorithm (MD5, SHA-1, SHA-256, SHA-384, SHA-512) from expected hash length.
Generate random numbers within a range.
Convert images between formats with Canvas API. Supports resize, watermark, and batch processing.
Compress images in the browser with quality control and batch processing.
Generate QR codes from text or URLs.
Pick colors and get HEX, RGB, HSL values.
Convert an image file to a Base64 data URL.
Generate Code128, EAN-13, EAN-8, UPC-A, QR, and DataMatrix barcodes with color customization and batch mode.
Browse and copy emoji characters.
Extract dominant colors from any image. Export as CSS variables, JSON, or Tailwind config.
Chain multiple operations together: encode, format, transform, hash. CyberChef-style recipe builder.
Validate JSON data against a JSON Schema (Draft-7). Instant client-side validation.
Convert between units of length, weight, temperature, and more.
Simple timer and stopwatch for daily use.
Calculate subnet details from an IP and CIDR.
Encode or decode URL strings.
Convert text between different cases.
Analyze text: word count, character count, line count, readability scores, word frequency, and more.
Sort and deduplicate list items.
Get current weather conditions for any city.
Convert between world currencies with live exchange rates.
Check if a date is a holiday with hardcoded China 2025-2026 holidays, multi-country support, countdown, and workday calculator.
Test ping latency, download/upload speed from the browser.
Simple browser-based text editor with auto-save.
Fetch and read RSS/Atom feeds with OPML import/export, read/unread tracking, full-text extraction, and keyboard navigation.
Focus timer using the Pomodoro technique.
Simple browser-based todo list.
Interactive calendar with lunar dates, Chinese holidays, date calculator, and event notes.
Set a countdown to a target date or time.