Security and Privacy Tools
Use free browser-based security and privacy tools for password generation, password strength checks, hash generation, JWT decoding, Base64 decoding, and hiding sensitive image data.
Built for developers, by a developer.
All tools run locally in your browser. Your data never leaves your device.
Why this collection exists
Use free browser-based tools for everyday security and privacy tasks like generating passwords, checking password strength, creating hashes, decoding JWTs for debugging, working with encoded strings, and hiding sensitive information in screenshots or images.
Security & Privacy Kit is designed for practical day-to-day use. Developers, admins, and privacy-conscious users often need quick answers around hashes, credentials, or auth tokens while already in the middle of another task. These tools run locally in your browser — your data never leaves your device.
Best fit for
- Developers
- QA testers
- Students learning security basics
- Website owners
- Documentation teams
- Support teams preparing screenshots
- Privacy-conscious users
Featured tools in this collection
Start with the strongest tools in this workflow cluster.
Password Strength Checker
Test how secure your password is — get an entropy score, estimated crack time, and actionable tips.
Password Generator
Generate cryptographically secure random passwords using crypto.getRandomValues() — customizable length, character sets, and entropy calculation.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text.
JWT Decoder
Decode and inspect JSON Web Tokens (JWT) without validation.
SHA Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text instantly in your browser.
MD5 Generator
Instantly generate MD5 hashes from any text for checksums and data verification.
Tools by Workflow
Browse tools grouped by what you need to get done.
Password and Strength Tools
Password tools help you generate stronger random passwords and check whether a password looks weak or predictable. Useful for personal testing, account setup, and security education.
Hashing and Checksums
Hashing tools create checksums for testing, comparison, and development workflows. Hashing is not the same as encryption. Do not use MD5 as secure storage for passwords or in sensitive security systems.
JWT and Token Inspection
JWT tools help developers inspect token headers and payloads while debugging authentication flows. Use Base64 to decode encoded strings. Do not paste live production tokens, customer tokens, admin tokens, or private keys into any online tool.
Privacy Cleanup Tools
Privacy cleanup tools help you prepare safer content for sharing. Blur or pixelate sensitive details in screenshots before sharing them publicly, or encode strings before including them in shared documents.
Browse the supporting categories
Jump into the broader categories that power this collection.
Security Tools
Security & privacy tools
Generator Tools
Generate data & codes
Developer Tools
Developer utilities
Converter Tools
Convert between formats
Image Tools
Image editing & conversion
All tools in this collection
Browse the complete workflow cluster and jump into the tool you need next.
Password Generator
Generate cryptographically secure random passwords using crypto.getRandomValues() — customizable length, character sets, and entropy calculation.
Password Strength Checker
Test how secure your password is — get an entropy score, estimated crack time, and actionable tips.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text.
MD5 Generator
Instantly generate MD5 hashes from any text for checksums and data verification.
SHA Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text instantly in your browser.
JWT Decoder
Decode and inspect JSON Web Tokens (JWT) without validation.
JWT Debugger
Decode, inspect, and verify JSON Web Tokens (JWT) locally.
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 to plain text — with URL-safe mode, auto-detect, and size stats.
Photo Censor
Blur or pixelate sensitive information in photos.
Posts linked to this workflow
Support articles that explain the decisions and adjacent tasks around this collection.
Collection FAQ
Extra context around when to use this toolkit and where to start.
What are security and privacy tools?
Security and privacy tools help with common everyday tasks like generating strong passwords, checking password strength, creating hash values, decoding JWT tokens for debugging, encoding and decoding strings, and hiding sensitive details in screenshots.
Can I generate strong passwords online?
Yes. Password Generator creates strong, random passwords based on your chosen length and character settings. All generation happens in your browser — passwords are never sent to a server.
Is hashing the same as encryption?
No. Hashing is a one-way process — a hash cannot be reversed to recover the original value. Encryption is a two-way process where the original data can be recovered using a key. Hash Generator and SHA Generator are for creating checksums, not for encrypting sensitive data.
Is MD5 secure for passwords?
No. MD5 is fast to compute, which makes it easy to crack with modern hardware. Do not use MD5 to store passwords in databases or for any security-critical hashing. Use it only for checksums, file verification, or development testing.
Can I decode JWT tokens safely online?
You can decode JWT tokens to inspect their header and payload contents. However, do not paste live production tokens, admin tokens, customer secrets, or private keys into any online tool. Use JWT Decoder only with test or development tokens.
Can I hide sensitive information in screenshots?
Yes. Photo Censor lets you blur or pixelate selected areas of an image directly in the browser. It is useful for hiding names, IDs, email addresses, and private on-screen details before sharing screenshots.
Are these tools a replacement for a security audit?
No. These tools are useful for everyday testing, education, and development workflows. They are not a replacement for a full security audit, password manager, secure authentication system, or professional security review.
Related Collections
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