What can I use SHA-256 for?

Typical uses: verifying file integrity, generating content fingerprints, or storing checksums.

SHA-256 Hash Generator — WebCrypto

Q: How do I use this SHA-256 tool?

Type or paste your text into the box—or choose a file—then click Compute (or press Ctrl/Cmd+Enter). The SHA-256 hex digest appears instantly below. All hashing happens locally in your browser.

Q: Does my text or file get uploaded?

No. Hashing uses the WebCrypto API in your browser. Nothing is sent to a server.

Q: Can I hash large files?

Yes, up to your browser’s available memory. For very large files, use a desktop tool that supports streaming.

Q: Is SHA-256 reversible?

No. SHA-256 is a one-way cryptographic hash, not encryption; you cannot get the original content back from the hash.

Text to hash

…or choose a file:

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Privacy: hashing happens locally with WebCrypto; nothing is uploaded.

How to use

Type or paste text into the box, or click …or choose a file to select a file.
Click Compute (or press Ctrl/Cmd+Enter). The SHA-256 hex digest appears below.
Click Copy to copy the hash to your clipboard.
Use Clear to reset the inputs and start again.

Tips

Works offline once loaded.
For very large files, your browser must load the whole file into memory. Consider a desktop tool with streaming for multi-GB files.
SHA-256 is deterministic: the same input always produces the same output.
Hashes are one-way (not encryption). You can’t reverse a hash to get the original content.

FAQ

How do I use this SHA-256 tool?

Enter text or pick a file, then click Compute (or press Ctrl/Cmd+Enter). The hex digest will be shown in the output box.

Does my text or file get uploaded?

No. All hashing is performed locally in your browser using the WebCrypto API. Nothing leaves your device.

Can I hash large files?

Yes—subject to available memory in your browser. For multi-GB files, use a desktop tool that supports streaming.

Is SHA-256 reversible?

No. SHA-256 is a cryptographic hash function. It’s designed to be one-way and collision-resistant.

What is SHA-256 used for?

Common uses include verifying file integrity, creating content fingerprints, and storing checksums.

Related tools

More text & encoding utilities:

Text → PDF JSON Formatter Base64 Encode/Decode URL Tools

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