Base64Fix.ai — Security Tools

Base64 Security Decoder with AI Audit

Not just a decoder — a security auditor. Understand what's inside any Base64 blob: content type, risk level, and plain-English security implications.

🛡️ Decode & Audit

What the AI Security Auditor Detects

🔴High RiskAPI Keys & Credentials

Identifies patterns matching AWS keys, GitHub tokens, Stripe keys, and other credential formats.

🔴High RiskPII (Personal Data)

Flags email addresses, phone numbers, government IDs — triggers GDPR/CCPA consideration.

🟡Medium RiskJWT Tokens

Decodes header and payload, shows claims, flags admin roles and long expiry times.

🟡Medium RiskInternal URLs / Paths

Detects internal infrastructure paths, IP addresses, and internal hostnames.

🟢Low RiskJSON Payloads

Identifies and pretty-prints embedded JSON — often config data or API responses.

🟢Low RiskBinary / Media Files

Detects image, PDF, and other binary content — confirms safe to display or save.

Privacy Architecture

We take an unusual approach: the Base64 decoding itself is entirely client-side. Only the decoded text string — not your original Base64 input — is sent to Claude Haiku for analysis, and only when you click "Decode & Audit."

1Paste Base64Browser
2DecodeBrowser (client-side)
3AI AuditClaude Haiku API (decoded text only)
4ResultBrowser

Audit Any Base64 — Free

10 AI audits/month free. No account required.

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