Check text against an expected SHA hash — the valid “reverse” of hashing.
Hashes are one-way by design — nothing can turn a SHA digest back into the original text. What you can do is the reverse check: take text you believe produced a hash and see whether it matches. That’s exactly what this tool does.
Matching is case-insensitive and shows a green Match verdict — or a red Mismatch. A mismatch means the text differs; there is no way to recover the original from the digest.