🔐 SHA-256 Hash Generator — Local Digest
Type or paste text and generate a SHA-256 hex digest locally. Useful for checksums of notes, tokens and short files you paste as text.
How it works
- Paste the exact text, including spaces and line breaks.
- Press Generate SHA-256. The browser hashes the UTF-8 bytes with SubtleCrypto.
- Copy the 64-character lowercase hex digest. The same text always produces the same digest.
Examples
- The word toolnova has a stable SHA-256 hex digest you can recompute any time.
- Adding a trailing space changes the digest because the bytes change.
- An empty box hashes the empty string, which is a known SHA-256 value.
Frequently asked questions
Is SHA-256 encryption?
No. It is a one-way hash. You cannot recover the original text from the digest.
Does this hash files?
It hashes the text you paste, encoded as UTF-8. For a file checksum, paste the file contents only if they are text.
Will the result match other tools?
Yes, when those tools hash the same UTF-8 bytes. Watch for hidden newlines added by editors.
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