Your sensitive inputs stay in your browser.
Format, inspect, and verify without sending tool inputs to a processing backend.
Start with a task
Security workflows
Safe-to-Share Sanitizer
Heuristically mask likely credentials before sharing text. Review the result.
Open toolWebhook Signature Verifier
Check whether supplied payload, secret, and signature values match locally.
Open toolSHA Hash Generator
Generate SHA-1, SHA-256, and SHA-512 digests in the browser.
Open toolBase64 Converter
Encode and decode standard Base64 and Base64URL strings locally.
Open toolMore tools by purpose
Choose a category for the rest of the toolkit, or use the complete tools center for descriptions and related guides.
Encoding & Formatting
Credentials & Security
Debugging & Validation
Practical security guides
View all articlesCredential hygiene
How to Sanitize .env Files Before Sharing
Learn where heuristic redaction helps, where it can miss, and why human review still matters.
Webhook security
What Is a Webhook Signature and Why Must You Validate It?
Understand signature matching, timestamp checks, and replay defenses for production receivers.
Cryptography
How to Generate Cryptographic Hashes Offline
Choose an appropriate digest and keep sensitive source text out of remote utilities.
Encoding
Base64 vs Base64URL
See how the alphabets, padding, and URL-safe variants differ before converting data.