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Security & Encoding Tools

Password generator, hash generator, URL encoder/decoder and UUID generator

Password Generator

Hash Generator

URL Encoder / Decoder

UUID Generator

What are Security & Encoding Tools?

Security & Encoding Tools is a comprehensive suite for data transformation and security operations. Generate cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512), create strong passwords, generate UUIDs, and perform URL encoding/decoding. Essential utilities for developers, security professionals, and system administrators.

Key Features

Hash Generator

Create MD5, SHA-1, SHA-256, and SHA-512 hashes for file integrity verification and data fingerprinting.

Password Generator

Generate cryptographically secure random passwords with customizable length, characters, and complexity.

UUID Generator

Create version 4 UUIDs (universally unique identifiers) for database keys and distributed systems.

URL Encoder/Decoder

Encode special characters for URLs or decode percent-encoded strings back to readable text.

Bulk Generation

Generate multiple passwords or UUIDs at once for batch operations and database seeding.

One-Click Copy

Instantly copy generated values to clipboard for quick use in your applications.

How to Use

  1. Select Tool: Choose from Hash Generator, Password Generator, UUID Generator, or URL Encoder.
  2. Enter Input: For hashes/encoding, enter your text. For passwords/UUIDs, configure options.
  3. Generate: Click the generate button to create your output instantly.
  4. Copy Results: Use the copy button to save results to your clipboard.
  5. Bulk Generate: For passwords and UUIDs, specify quantity for batch generation.

Frequently Asked Questions

What's the difference between MD5 and SHA-256?

MD5 produces 128-bit (32 hex character) hashes and is faster but cryptographically broken - useful only for checksums, not security. SHA-256 produces 256-bit (64 hex character) hashes and is currently secure for cryptographic purposes. Use SHA-256 or SHA-512 for password hashing, digital signatures, and security applications.

How long should a secure password be?

For strong security, use at least 16 characters with a mix of uppercase, lowercase, numbers, and symbols. 12 characters is the minimum for moderate security. Each additional character exponentially increases cracking difficulty. Consider using passphrases (4+ random words) for memorable yet secure passwords.

What is a UUID and when should I use it?

A UUID (Universally Unique Identifier) is a 128-bit identifier guaranteed to be unique across space and time. Use UUIDs for: database primary keys in distributed systems, API request IDs, session tokens, file naming, and any scenario where you need unique identifiers without central coordination. Version 4 UUIDs are randomly generated.

When do I need URL encoding?

URL encoding is needed when passing special characters in URLs, query parameters, or form data. Characters like spaces, &, =, ?, /, and non-ASCII characters must be percent-encoded (e.g., space becomes %20). Always encode user input in URLs to prevent injection attacks and ensure proper data transmission.

Developer API

Need this in your own app? Automate it with the API.

Everything this tool does, available as a simple REST endpoint with JSON responses — perfect for scripts, monitoring and integrations. Free tier: 100 requests/month, no card required.

Get your free API key Read the docs
terminal 
curl -H "X-API-Key: tn_your_api_key" \
  "https://tools-ninja.com/api/v1/hash?action=generate_hash&text=hello&algorithm=sha256"
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