Inspect common security data and generate defensive configuration helpers. Results are informational and should be reviewed by a qualified administrator before production use.
Security & Privacy Tools10 free tools
Inspect hashes, passwords, certificates, URLs, and web headers.
Most used
File Checksum Calculator
Calculate SHA-256 and SHA-512 checksums for a selected file locally. Use the focused browser controls, compare the result with the source, and check the page's processing note before working with sensitive material.
In your browserPassword Breach Checker
Check a password through a k-anonymous hash prefix without transmitting the password. Use the focused controls, review the complete result, and note that processing runs through a bounded temporary server request.
Server · auto-deletedSecurity Headers Checker
Inspect common defensive HTTP response headers for a public URL. Use the focused controls, review the complete result, and note that processing runs through a bounded temporary server request.
Server · auto-deletedSSL Certificate Decoder
Parse a pasted PEM certificate locally and display its decoded X.509 fields. Use the focused browser controls, compare the result with the source, and check the page's processing note before working with sensitive material.
In your browserHMAC Generator
Create an HMAC with a selected SHA algorithm and user-provided secret. Use the focused browser controls, compare the result with the source, and check the page's processing note before working with sensitive material.
In your browserContent Security Policy Generator
Build a defensive CSP header from explicit source and feature selections. Use the focused browser controls, compare the result with the source, and check the page's processing note before working with sensitive material.
In your browserHashes & passwords
Multi-Hash Generator
Generate several non-secret digest formats for text or file verification. Use the focused browser controls, compare the result with the source, and check the page's processing note before working with sensitive material.
In your browserPassword Entropy Calculator
Estimate search-space entropy and explain the limits of composition-only scoring. Use the focused browser controls, compare the result with the source, and check the page's processing note before working with sensitive material.
In your browserWeb & message security
URL Safety Checker
Inspect a URL for suspicious syntax, risky schemes, credentials, and lookalike-host patterns. Use the focused browser controls, compare the result with the source, and check the page's processing note before working with sensitive material.
In your browserEmail Header Analyzer
Parse received headers and authentication results without uploading message content. Use the focused browser controls, compare the result with the source, and check the page's processing note before working with sensitive material.
In your browser