Tools directory
Find the right technical tool faster
Browse by workflow or category instead of scanning one long list. CVE and IP intelligence tools now use live-backed data sources and the local NVD database.
Start by workflow
Grouped entry points for common security and engineering tasks.
Vulnerability intelligence
CVE, package, SBOM, CVSS, and exploit-prioritization tools.
Network investigation
IP, DNS, RDAP, TLS, mail security, and HTTP surface checks.
Decode and inspect
JWTs, JSON, YAML, XML, Base64, URL, Unicode, and Markdown.
Build and convert
Regex, cron, UUIDs, diffs, TypeScript, CSV, SQL, curl, and Nmap.
Showing 54 tools
Encoding and Decoding
Transform, validate, preview, and inspect common text, token, and document formats.
Base64 Encoder Decoder
Encode text to Base64 or decode Base64 back to UTF-8 text.
URL Encoder Decoder
Encode and decode URL components safely for query strings and paths.
HTML Entity Encoder Decoder
Escape or unescape HTML entities for safe display in web pages.
JWT Decoder
Decode JWT headers and claims without sending tokens to a third-party service.
Hex Encoder Decoder
Convert text to hexadecimal bytes and decode hex back to text.
Unicode Escape Encoder Decoder
Convert text to Unicode escape sequences and decode escaped strings.
JSON Formatter Validator
Format, minify, and validate JSON with clear parser errors.
YAML Formatter Validator
Parse and normalize YAML documents for configuration review.
XML Formatter Validator
Validate XML syntax and format nested tags for readability.
Markdown Previewer
Preview Markdown text as HTML for documentation and README reviews.
Networking
Inspect DNS, HTTP, TLS, IP, mail authentication, and internet-facing services.
DNS Lookup
Resolve DNS records with TTLs, canonical CNAME chains, resolver metadata, and copy-ready answer sections.
DIG Web Interface
Run a safe server-side DIG-style query with TTLs, CNAME trace, resolver details, and copy-ready output.
WHOIS Lookup
Inspect domain and IP registration data through RDAP where available.
IP Intelligence Lookup
Inspect public IP GeoIP location, ownership, RDAP registration, reverse DNS, ASN, routing prefix, registry, and allocation data.
Reverse DNS Lookup
Find PTR hostnames associated with an IPv4 or IPv6 address.
SSL Certificate Checker
Inspect a site's TLS certificate, issuer, SANs, expiry, cipher, and protocol.
HTTP Headers Checker
Fetch and inspect HTTP response headers from a public URL.
Security Headers Checker
Score common browser security headers using Mozilla Observatory-style checks.
Ping Tool
Measure TCP reachability without shelling out to the system ping command.
Traceroute Tool
Plan and document traceroute checks while avoiding unsafe shell execution.
Port Checker
Check whether a TCP port is reachable on a public host.
Subnet Calculator
Calculate IPv4 network, broadcast, usable range, and host count.
CIDR Calculator
Convert CIDR prefixes to subnet masks, wildcard masks, and host capacity.
IPv4 IPv6 Converter
Convert IPv4 addresses to IPv6 mapped and 6to4 representations.
MX Record Checker
Resolve mail exchanger records for a domain.
SPF Record Checker
Find and explain SPF TXT records for email authentication.
DKIM Checker
Resolve DKIM selector TXT records and summarize key metadata.
DMARC Checker
Resolve and explain DMARC policy records for a domain.
Security
Analyze vulnerabilities, headers, hashes, passwords, containers, Kubernetes, and hardening posture.
CVE Lookup
Search local CVE data with CVSS, EPSS, KEV, references, and package context.
CVSS Calculator
Estimate CVSS v3.1 base score from common exploitability and impact metrics.
Password Strength Checker
Estimate password strength, entropy, and improvement guidance locally.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes.
Hash Identifier
Identify likely hash algorithms by digest length and character set.
SHA256 Checker
Compare a SHA-256 digest against computed text or file hashes.
File Hash Calculator
Calculate file hashes in the browser without uploading file contents.
SBOM JSON Viewer
Inspect CycloneDX or SPDX JSON SBOM package and dependency summaries.
Package Vulnerability Lookup
Search local package advisories and NVD CVEs by package, ecosystem, vendor, or product name.
Docker Image Risk Analyzer
Placeholder analyzer for image naming, tag hygiene, and future registry integrations.
Linux Hardening Checklist Generator
Generate a practical Linux server hardening checklist by role.
Kubernetes YAML Security Checker
Check Kubernetes manifests for common pod security risks.
Nmap Command Builder
Build safer Nmap commands from explicit scan options.
Curl Command Builder
Generate readable curl commands for HTTP testing and API debugging.
Developer
Format, convert, test, generate, and compare everyday engineering data.
Regex Tester
Test JavaScript regular expressions against sample text.
Timestamp Converter
Convert Unix timestamps, ISO timestamps, and local dates.
Cron Expression Parser
Explain common five-field cron expressions and next schedule intent.
UUID Generator
Generate random UUID v4 identifiers in the browser.
Lorem Ipsum Generator
Generate placeholder paragraphs for UI and layout testing.
Diff Checker
Compare two text blocks and show line-level differences.
JSON to TypeScript Converter
Generate TypeScript interfaces from JSON objects.
JSON to CSV Converter
Convert arrays of JSON objects into CSV rows.
CSV to JSON Converter
Convert CSV with headers into JSON objects.
SQL Formatter
Format common SQL statements for easier review.
JWT Claim Explainer
Explain registered JWT claims such as iss, sub, aud, exp, nbf, iat, and jti.
API Response Beautifier
Beautify JSON, XML, or text API responses and inspect status metadata.