CareerByteCode
15 free tools · 100% in your browser

The Security Toolbox
for engineers & students

Score vulnerabilities, generate and test passwords, decode tokens, build CSP headers, scan for leaked secrets, decode SSL certificates, build SPF, DKIM and DMARC records and check file permissions, all client-side, nothing uploaded.

15 tools0 data leaves your browserNo signup

Pick a tool

Safe for real secrets and tokens, every computation happens locally in your browser.

Every tool on its own page

All 15 tools of the Security Toolbox, each with how to use it, a worked example and answers to common questions.

CVSS 3.1 CalculatorPassword GeneratorPassword Strength CheckerSHA-256 Hash GeneratorHash IdentifierHMAC GeneratorJWT Token InspectorCSP BuilderSecret ScannerClassic CiphersToken GeneratorBasic Auth Header GeneratorSSL Certificate DecoderSPF, DKIM and DMARC Builderchmod and umask Calculator
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FAQ

Questions, answered

Are the Security Toolbox tools free to use?
Yes. Every tool here is free, private, and runs entirely in your browser, with no signup and nothing uploaded to a server.
Are the security tools safe to use with real values?
The tools run locally in your browser, but avoid pasting production secrets online. Use them for learning, scoring, and generating test values.
Do I need an account or to install anything?
No account and no install. Open the page and start using it. The tools keep working even offline once the page has loaded.
How does CareerByteCode help my career beyond these tools?
Join the community for mentorship, grow your personal brand, and freelance under the CareerByteCode brand with a 55% to 80% revenue share. Join the community.
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