Security Tools
Built for Developers
Hash generators, JWT decoders, IP lookups, password analyzers, and more — all free, all browser-based, all private.
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Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for text or files instantly in your browser.
Base64 Encoder / Decoder
Encode and decode Base64 strings with Unicode support. Detects encoded input automatically.
Password Strength Meter
Analyze password strength with time-to-crack estimates and improvement suggestions.
JWT Decoder & Inspector
Decode and inspect JSON Web Tokens. View header, payload, expiry, and validation status.
IP Address Lookup
Look up geolocation, ISP, ASN, and timezone for any IP address. Auto-detects your own IP.
Why CyberToolkit?
Tools that respect your work
Built for security professionals, developers, and CTF players who need reliable tools without the privacy trade-offs.
100% Private
All tools run entirely in your browser. No input, data, or results are ever sent to our servers.
Lightning Fast
Instant results powered by Web Crypto API and native browser capabilities. No waiting, no loading spinners.
No Account Needed
Fully anonymous. No login, no email, no cookies. Just open a tool and get to work.
Open & Auditable
All processing is client-side and auditable. No hidden APIs. Use DevTools to verify everything runs locally.
All Tools
Complete Toolkit
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for text or files instantly in your browser.
Encode and decode Base64 strings with Unicode support. Detects encoded input automatically.
Analyze password strength with time-to-crack estimates and improvement suggestions.
Decode and inspect JSON Web Tokens. View header, payload, expiry, and validation status.
Encode and decode URLs and URI components. See exactly which characters changed.
Look up geolocation, ISP, ASN, and timezone for any IP address. Auto-detects your own IP.
Verify SSL/TLS certificate validity, expiry dates, and chain for any domain.
Query WHOIS data for any domain: registrar, creation date, expiry, and nameservers.
Search the NIST NVD database for CVEs by ID or keyword. View CVSS scores and affected products.
Generate RFC 4122 UUID v4 identifiers. Bulk generation with multiple format options.
Start securing your workflow
All tools are free, browser-based, and require no sign-up. Jump in and start building.
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