Security — Online Utilities

Generate strong, random passwords on your device.

Compare two hexadecimal digests without uploading them.

Calculate SHA-256, SHA-384, or SHA-512 digests.

Generate a random 256-bit hexadecimal token locally.

Escape text for safe inclusion in HTML text content.

Calculate SHA-256 for a local file without uploading it.

Check length and common weaknesses locally.

Sign a message with HMAC-SHA-256 locally.

Build a Strict-Transport-Security header for HTTPS sites.

Identify possible hexadecimal digest formats by length.

Inspect pasted caching, compression, CORS, and security headers.

Inspect token timestamps and remaining validity without uploading a token.

Replace selected sensitive field names at every nesting level locally.