Cybersecurity Tools

Free, educational, and 100% defensive. 34 tools and growing.

Showing 34 of 34 tools

🔑
🔑 Passwords

Password Strength Analyzer

Analyze how strong a password is, get an estimated crack difficulty, and receive actionable tips — without storing anything.

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3
🎲
🔑 Passwords

Password Generator

Generate cryptographically strong passwords or memorable passphrases with full control over length, character sets, and format.

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0
🌐
🌐 Network

DNS Records Lookup

Query A, AAAA, MX, CNAME, TXT, NS, and SOA records for any domain with educational explanations for each record type.

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0
🔗
🌐 Network

Redirect Chain Viewer

Follow every redirect hop for a URL and expose the full chain — useful for spotting trackers, open redirects, and misconfigured links.

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0
🔒
🌐 Network

SSL Certificate Checker

Verify a domain's SSL certificate — issuer, validity dates, days remaining, and clear warnings if it's expiring soon.

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2
🔎
🌐 Network

WHOIS Lookup

Look up domain registration info — registrar, creation date, expiry, name servers. Flags newly-registered domains which are a major phishing risk signal.

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0
🌿
🌐 Network

Subdomain Finder

Passively enumerate subdomains via Certificate Transparency logs. No active scanning — uses crt.sh to find subdomains without touching the target.

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1
🌍
🌐 Network

IP Reputation & Geolocation

Look up any IP address — country, ISP, ASN, datacenter vs residential, and proxy/VPN detection. Useful for threat investigation.

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1
🤖
🌐 Network

robots.txt Viewer

Fetch and parse any site's robots.txt. Highlights disallowed paths that reveal sensitive directories — robots.txt is public and read by attackers too.

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0
🔓 New
🌐 Network

API Exposure Checker

Probe any website for unauthenticated API endpoints, CORS wildcards, exposed Swagger/GraphQL docs, and missing rate limits — find leaks before attackers do.

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1
📧
📧 Email & Phishing

Email Breach Checker

Check if your email address appeared in a known data breach — cross-referenced against 847M+ leaked credentials.

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0
📨
📧 Email & Phishing

Email Header Analyzer

Paste raw email headers to verify SPF, DKIM, and DMARC authentication. Detect Reply-To mismatches, trace the delivery path, and identify spoofing indicators.

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1
🎣
📧 Email & Phishing

Phishing URL Analyzer

Analyze any URL for phishing signals — lookalike domains, IDN homographs, suspicious TLDs, open redirects, and more. No HTTP request is made to the target.

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1
🛡️
🛡️ Web Security

Security Headers Checker

Inspect a website's HTTP security headers, understand what each one does, and see a scored report with recommendations.

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1
🍪
🛡️ Web Security

Cookie Security Analyzer

Paste a Set-Cookie header and check for Secure, HttpOnly, SameSite flags. Get a security grade and plain-English explanation of each flag.

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1
🧱
🛡️ Web Security

CSP Analyzer

Analyze a Content-Security-Policy header for dangerous directives — unsafe-inline, wildcard sources, missing object-src, and more.

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0
🔐
🔐 Crypto & Encoding

JWT Decoder & Analyzer

Decode any JWT and inspect its header and payload. Automatically flags alg:none attacks, missing expiry, sensitive data in payload, and more.

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1
#️⃣
🔐 Crypto & Encoding

Hash Generator & Identifier

Compute MD5, SHA-1, SHA-256, SHA-512 and more from any text. Or paste a mystery hash to identify what algorithm produced it.

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0
🔄
🔐 Crypto & Encoding

Encoding Toolkit

Encode and decode Base64, URL percent-encoding, and Hex. Essential for analyzing obfuscated payloads, JWT parts, and email attachments.

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1
{ } New
🛠️ Dev Tools

JSON Formatter & Validator

Paste any JSON and instantly format it with syntax highlighting, validate for errors, and copy the prettified output. Runs entirely in your browser — nothing is sent to a server.

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1
🔢 New
🛠️ Dev Tools

Token Counter

Count tokens in any text as estimated by GPT-4 / Claude tokenizers. Essential for staying within LLM context limits when crafting prompts.

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1
📬 New
📧 Email & Phishing

DMARC / SPF / DKIM Checker

Audit any domain's email authentication setup — SPF policy strength, DMARC enforcement level, and DKIM key discovery across common selectors.

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0
.* New
🛠️ Dev Tools

Regex Tester

Write and test regular expressions live in your browser. Highlights all matches, shows capture groups, and explains common pattern mistakes.

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0
🧱 New
🛡️ Web Security

CSP Generator

Build a Content-Security-Policy header interactively — toggle directives, add allowed sources, and copy the finished header or meta tag.

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0
🕐 New
🛠️ Dev Tools

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and back. Shows UTC, your local time, and relative time — updated live.

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0
🖼️ New
🛠️ Dev Tools

Base64 Image Encoder / Decoder

Upload an image to get its Base64 data URI, or paste a Base64 string to preview and download the image. Runs entirely in your browser.

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0
🆔 New
🛠️ Dev Tools

UUID / ULID Generator

Generate cryptographically random UUIDs (v4) and ULIDs in bulk. Copy individually or export the whole list — no server call needed.

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0
📄 New
🛡️ Web Security

Security.txt Generator

Generate a RFC 9116-compliant security.txt file for your domain — the standard way to tell security researchers how to report vulnerabilities.

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0
🤖 Hot
🤖 AI Tools

AI Text Detector

Paste any text and get an AI-likelihood score based on vocabulary density, sentence uniformity, and punctuation patterns — no API needed, fully private.

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3
✨ New
🤖 AI Tools

Prompt Enhancer

Turn a rough idea into a clear, structured, high-performing prompt. Powered by Gemini Flash (free) with automatic fallback — save the result to your prompt library.

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4
📖 New
📈 SEO

Readability Analyzer

Paste your content and get Flesch-Kincaid reading ease, grade level, average sentence length, and actionable tips to simplify your writing.

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2
🔍 New
📈 SEO

Keyword Density Checker

Check how often your target keyword appears in your content, get a density percentage, and see in-context snippets — avoid over- and under-optimisation.

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1
🏷️ New
📈 SEO

Meta Tag Analyzer

Enter any URL to instantly audit its title tag, meta description, canonical, Open Graph, and Twitter Card tags — with a grade and actionable findings.

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2
📰 New
📈 SEO

Headline Analyzer

Score your blog post or article headline for word count, power words, sentiment, and SERP length — with a grade and a one-line improvement tip.

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2
🛡️

Safety & Privacy First

All tools are designed for defensive and educational use only. Passwords are never stored or logged. URL scans read only HTTP headers — no page content is saved. API and network tools only make passive requests. This platform does not assist with offensive security techniques.