Free Online Digest & Hash Generator 2026

Welcome to Code Formatter Hash Generator – a powerful client-side cryptography tool capable of computing hashes for any string using popular algorithms like MD5, SHA-1, SHA-256, SHA-512, and more. Hash functions are the backbone of modern data security, used for password verification, file integrity checks, and digital signatures.

This tool runs entirely in your browser using standard cryptographic libraries (`CryptoJS`). This means your data is processed locally on your device and never sent to any server, ensuring complete privacy for your sensitive strings.

Supported Algorithms

SHA-256 (Secure Hash Algorithm 256-bit)

The industry standard for security. Used in SSL certificates, Bitcoin transactions, and many modern authentication systems. It produces a 64-character hexadecimal string. It is currently considered robust against collision attacks.

MD5 (Message Digest Algorithm 5)

Produces a 128-bit hash value. While fast and widely used for checksums (verifying file integrity), it is no longer secure for password storage due to vulnerabilities to collision attacks. It's still useful for non-cryptographic purposes.

SHA-1

The predecessor to SHA-2. Produces a 160-bit hash. deprecated by major browsers and certificate authorities. Like MD5, it's efficient for simple checksums but should be avoided for high-security applications initiated after 2010.

SHA-512 & SHA-3

SHA-512 belongs to the SHA-2 family but with larger block sizes, suitable for 64-bit processors. SHA-3 is the latest member of the Secure Hash Algorithm family, internally different from MD5 and SHA-1/2 (Keccak based), offering a backup if SHA-2 is ever compromised.

How to Use This Tool

Enter Text: Type or paste your string into the Input box.
Select Algorithm: Choose your desired hash function from the dropdown in the Output pane (Default: SHA-256).
Customize: Toggle "Uppercase" if you need the hex string in CAPS.
Copy: Click the copy icon to grab the result instantly.

Common Use Cases

1. Verifying File Integrity

When downloading software, developers often provide a SHA-256 checksum. You can hash the text content or file name to verify it matches the source.

2. Password Storage Concepts

Developers use hashing to store passwords. Instead of saving "password123", they save `ef92b778...`. When a user logs in, the system hashes their input and compares it to the stored hash.

3. Digital Fingerprinting

Hashing creates a unique "fingerprint" of data. Even changing a single comma in a large document results in a completely different hash.

Frequently Asked Questions

Is this tool safe for passwords?

Yes, because it runs locally. However, for a production app, you should salt your passwords (add random data before hashing) and use slow algorithms like bcrypt or Argon2, not simple SHA-256, to prevent rainbow table attacks.

Can I decrypt a hash?

No. Hashes are one-way functions. You cannot mathematically reverse a hash to get the original text. You can only brute-force it (guess inputs until one matches).

What is a collision?

A collision happens when two different inputs produce the exact same hash. MD5 and SHA-1 have known collision vulnerabilities. SHA-256 is currently strictly collision-resistant.

Why do some hashes look like `e3b0c44...`?

That specifically `e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855` is the SHA-256 hash of an empty string.

Does this support file hashing?

Currently, this tool is optimized for text strings. Hashing large files requires different memory management techniques (streaming) to avoid crashing your browser.