Which hash algorithms are supported?

The tool uses the Web Cryptography API to compute SHA-1, SHA-256, SHA-384, and SHA-512 digests. MD5 is not included because it is not exposed by Web Crypto in browsers.

How do I hash a binary file?

Click Hash file and select any file. The digest is computed from the raw bytes. Editing the text field switches back to hashing the text content instead.

How does hash comparison work?

Paste two hex strings into Hash A and Hash B. The tool normalizes whitespace and case, then shows whether they match — useful for verifying downloads against a published checksum.

Are my files uploaded anywhere?

No. File contents are read with FileReader and processed only inside your browser using crypto.subtle.digest.

Generador de hashes

Calcula SHA-1, SHA-256, SHA-384 y SHA-512 desde texto o archivos

Text input

Hashes update automatically as you type. Uploading a file hashes raw bytes instead (shown below).

Loading editor...

Compare hashes

Paste two hex digests (spaces ignored, case-insensitive). Useful for verifying downloads.

Hash A

Hash B

Compute cryptographic hashes without uploading anything

SHA-256 is everywhere — verifying downloads, signing payloads, comparing files. Computing a hash in the browser keeps the input on your machine via the Web Crypto API, so you can hash sensitive text or large files locally without trusting a server. The tool also supports SHA-1, SHA-384, and SHA-512 for legacy and high-security needs.

Use the generator when you need to

Verify a download against a published checksum

Hash the file and compare against the project's listed SHA-256 to confirm integrity.

Generate a deterministic identifier

Hash a canonical payload to produce a stable ID for caching, deduplication, or content addressing.

Sanity-check a webhook signature

Compute the expected hash of a payload to validate against the signature header from the upstream service.

How to hash text or files quickly

1
Paste the text you want to hash, or click Hash file and select a file.
2
Pick the algorithm (SHA-1, SHA-256, SHA-384, or SHA-512).
3
Copy the resulting hex digest, or use the compare tool to verify against a published checksum.

Keep going

Generate random IDs

Pick UUIDs when you want randomness rather than a deterministic hash.

Encode hash output as Base64

Convert hex digests to Base64 when an API expects them in that form.

Decode signed JWTs

Inspect token signatures alongside hashing utilities when debugging auth.

Validate signed payloads

Confirm the JSON you're hashing is well-formed before computing a digest.

Common hashing workflows

Verify a release artifact

Hash the downloaded file and compare against the project's published checksum before installing.

Diagnose a webhook signature mismatch

Hash the canonical payload locally to confirm what the upstream signature should be.

Detect duplicate documents

Use the hash of canonical content to identify duplicates without storing the documents themselves.

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Preguntas frecuentes

La herramienta usa la Web Cryptography API para calcular digests SHA-1, SHA-256, SHA-384 y SHA-512. No incluye MD5 porque Web Crypto no lo expone en los navegadores.

Haz clic en Hash file y selecciona cualquier archivo. El digest se calcula a partir de los bytes en bruto. Si editas el campo de texto, se vuelve al modo de hash del contenido textual.

Pega dos cadenas hex en Hash A y Hash B. La herramienta normaliza espacios en blanco y mayúsculas/minúsculas, y luego indica si coinciden; es útil para verificar descargas contra un checksum publicado.

No. El contenido del archivo se lee con FileReader y se procesa solo en tu navegador usando crypto.subtle.digest.