Useful boundaries
- Hashing creates a digest; it doesn’t hide data.
- UUIDs identify; they aren’t secrets.
Handle redaction, signatures, PDF forms, hashes, UUIDs and password generation with clear boundaries between each task.
Security Tools
Security work punishes assumptions. A black box isn't automatically a redaction, and a decoded token isn't a verified token. Check what the tool actually changes before you trust the result.
Browse security utilities
Sign PDF
Draw a signature and place it on your document.
Permanent redaction
Permanently remove a rectangular page area.
Fill & flatten forms
Complete PDF form fields and optionally flatten them.
UUID Generator
Generate cryptographically strong UUID v4 identifiers.
Password Generator
Generate strong random passwords with configurable character sets.
SHA-256 Hash Generator
Create a SHA-256 hash from text locally.
Security labels can be misleading, so the limits matter here
A SHA-256 hash is not encryption. A drawn signature is not cryptographic identity proof. A black rectangle is not secure redaction unless the underlying content is actually removed. Small wording differences matter when the output touches security or legal work.
These tools focus on the specific job shown on the page. Use them carefully, keep originals, and understand when a specialist workflow is required.
Passwords deserve a password manager. Legal signatures may require a regulated signing platform. Sensitive redaction deserves an exported-file check, not trust in the preview alone.
Document caution
- Open a redacted export and try to select/search the removed text.
- A visible signature and a certificate-backed digital signature are different things.
Want the deeper reasoning? Read the practical guide for this category.