Security & Network
Passwords, permissions, and bounded network checks.
- 22 tools ready
- Free, no account
- Runs in your browser
22 tools
Strong Password Generator
Generate a strong random password or an easy-to-remember passphrase with the length and character types you choose, and copy it in one click.
File Checksum Calculator and Comparison
Calculate SHA-256 or another supported digest and compare it with a fingerprint you paste.
Text Hash and HMAC Calculator
Hash text or calculate an HMAC with a key you enter locally. A hash is not reversible encryption.
JWT Reader
Decode the header and payload and show dates. Reading a token does not prove its signature.
Unix Chmod Permission Calculator
Convert values such as 0755 and read, write, and execute permissions, including symbolic form.
IP Address Format Converter
Convert numeric IPv4 forms and expand or compress IPv6, and check the format locally.
MAC Address Formatter
Normalize a MAC address and check its structure, without claiming to identify a device or owner.
International Domain Name Converter
Convert an Arabic or international domain and Punycode, and preview the name and encoding.
Local Password Strength Checker
Assess patterns in a password locally with guidance, without sending it or claiming a breach check.
Local X509 Certificate Reader
Show issuer, names, and validity from a public certificate you open. It does not by itself verify a live trust chain.
CSP Policy Builder
Choose content sources and produce a Content-Security-Policy draft and explanation, without claiming the copy is sufficient security.
Sensitive Log Data Redactor
Find common email, token, and key patterns and replace them for manual review. It does not guarantee every secret is found.
CORS Configuration Explainer
Paste headers and set an origin and method to explain likely allow or deny outcomes, without sending requests.
CIDR Subnet Calculator
Calculate an IPv4 or IPv6 range, network size, and addresses from clear definitions, without a connection.
SPF Record Explainer
Explain SPF mechanisms and syntax without branching lookups. It does not claim to simulate every DNS lookup.
DMARC Record Explainer
Explain a DMARC policy and tags and check the syntax, without changing DNS or analyzing incoming mail.
DNS Lookup
Show records for a domain from a chosen DNS provider, with cache, timeout, and limits. It is not a broad scan.
Domain Registration RDAP Lookup
Show the registrar, dates, and public statuses. Owner details may be redacted.
HTTP Header Checker
Fetch a limited public HTTPS response and show the status and headers, under strict request controls.
URL Redirect Checker
Show a limited redirect chain for a public link and explain the statuses.
TLS Certificate Checker
Show a public host certificate and its expiry, within what the hosting environment can do.
Domain Email DNS Checker
Read MX, SPF, DMARC, and DKIM names you provide. It is a configuration report, not a delivery guarantee.