Hash Generator

What This Tool Does

The Hash Generator lets you transform text into cryptographic hashes using modern, secure algorithms — instantly and privately.

It supports both:

• Single-value hashing, and
• Batch hashing, where each line is processed independently.

Everything runs directly in your browser with no uploads, accounts, or network requests.

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Supported Algorithms

SHA-256

A widely used secure hash algorithm that produces a 256-bit (64-character) hexadecimal hash.

Commonly used for:

• APIs and request signing
• Password pre-processing
• Integrity checks
• Blockchain systems

SHA-384

A variant of SHA-512 with a shorter output size.

Often used in:

• TLS certificates
• Security-sensitive environments
• Systems balancing output size and strength

SHA-512

A stronger algorithm producing a 512-bit (128-character) hash.

Used for:

• Cryptographic systems
• Long-term integrity verification
• High-security applications

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How to Use the Hash Generator

1. Enter your text
   Paste or type text into the input area. This can be a single value or multiple values separated by new lines.

2. Choose a hash algorithm
   Select SHA-256, SHA-384, or SHA-512 based on your needs.

3. Adjust batch options (optional)

   • Batch by newline: Hash each line independently.
   • Trim lines: Remove leading and trailing whitespace from each line before hashing.

4. View results instantly
   The output updates automatically whenever the input or options change.

5. Copy the output
   Use the Copy button to copy all generated hashes at once.

Badges below the output show the algorithm used, line counts, and character count for quick verification.

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Batch Hashing Explained

When Batch by newline is enabled:

input line 1 → hash line 1
input line 2 → hash line 2
input line 3 → hash line 3

• Line order is preserved
• Empty lines remain empty
• Each value is hashed independently

This makes the tool ideal for bulk workflows.

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Common Use Cases

• Bulk data integrity checks
  Verify lists of values without manual repetition.

• API & backend development
  Generate deterministic hashes for identifiers or signatures.

• Security & privacy workflows
  Hash sensitive values locally without exposing raw data.

• Testing & debugging
  Compare large sets of values quickly and reliably.

• Learning & experimentation
  Observe how small input changes affect cryptographic hashes.

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Important Characteristics of Hashes

• Deterministic
  The same input always produces the same hash.

• Avalanche effect
  Even a single-character change completely alters the output.

• Fixed length
  Output size depends only on the algorithm, not the input size.

• One-way
  Hashes cannot be reversed to recover the original data.

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Tips & Best Practices

• Prefer SHA-256 or stronger for modern applications.
• Hashing is not encryption — it does not hide data by itself.
• Never store raw passwords; always store hashes (with proper salting in real systems).
• Be consistent with trimming and casing when comparing hashes.
• If two hashes differ, the original inputs were different — guaranteed.

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How It Works

• Uses the browser’s Web Crypto API
• Text is encoded using UTF-8 before hashing
• Hash bytes are converted to hexadecimal output
• Batch processing is handled line by line
• All computation happens locally, in real time
• No JavaScript libraries, no servers, no tracking