Hash Generator

Step-by-step guide

1. 1
   Choose Text or File mode
   Use the Text tab to hash a string or the File tab to generate hashes for any local file.
2. 2
   Enter your input
   Type or paste text into the input area. For files, drop a file onto the drop zone or click Browse to select one.
3. 3
   Optionally enable HMAC
   Tick HMAC mode and enter a secret key to generate keyed hashes for message authentication.
4. 4
   Choose Hex or Base64 output
   Switch between hex (default) and Base64 representations of the hash using the format toggle.
5. 5
   Copy any hash
   Each algorithm row has its own Copy button so you can grab the specific hash you need.

Frequently Asked Questions

Which hash algorithms does this tool support?

The tool supports SHA-1, SHA-256, SHA-384, and SHA-512: all four algorithms exposed by the browser's Web Crypto API. All four hashes are computed simultaneously and displayed in a table.

Why is MD5 not available?

MD5 is not implemented in the browser's built-in Web Crypto API because it is considered cryptographically broken. For data integrity checking (not security), use SHA-256 instead.

Is my data sent to a server?

No. All hashing is performed using the browser's native crypto.subtle API. Neither text nor file data leaves your device.

What is HMAC mode?

HMAC (Hash-based Message Authentication Code) combines a cryptographic hash with a secret key to produce a signature that verifies both data integrity and authenticity. It is used in API authentication, JWT signing, and webhook verification.

What is the difference between SHA-256 and SHA-512?

SHA-256 produces a 256-bit (32-byte) hash and SHA-512 produces a 512-bit (64-byte) hash. SHA-512 is stronger and harder to brute-force but produces a longer output. For most web applications SHA-256 is sufficient.

Can I hash a file to verify its integrity?

Yes. Use the File tab, drop or select any file, and the tool computes SHA-1, SHA-256, SHA-384, and SHA-512 hashes. Compare the SHA-256 hash against the checksum published by the software distributor to verify the file has not been tampered with.

What is the hex format?

Hex (hexadecimal) represents each byte of the hash as two lowercase hex characters (0–9, a–f). SHA-256 in hex is 64 characters long. It is the most common format for displaying cryptographic hashes.

What is the Base64 format?

Base64 represents the raw binary hash bytes as ASCII text. It is more compact than hex (SHA-256 in Base64 is 44 characters) and is commonly used in HTTP headers, JWTs, and API responses.

Does the hash change if I add a space to the input?

Yes. Cryptographic hash functions are deterministic and sensitive to every byte of input. Adding, removing, or changing any character: including whitespace: produces a completely different hash output.