Developer Tools

Build with confidence

Cryptographic utilities and dev helpers — generated locally in your browser, never sent to a server.

8 tools

Base64 Encode / Decode

Convert text or files to Base64 and back — UTF-8 safe.

Compute SHA-256, SHA-384, or SHA-512 hashes for text and files.

Format, minify, and validate JSON with clear error messages.

Inspect JWT headers and payloads locally — no upload, no verification server.

Generate cryptographically secure JWT secret keys with adjustable bit strength.

Create strong random passwords with custom length and character sets.

Encode or decode URL components with encodeURIComponent.

Generate random UUID v4 values — cryptographically secure, locally in your browser.