SIGNATURE TECH TOOLS

The Signature Verification Tool is a simple, fully client-side browser utility that lets you check whether a previously signed message (created with a SHA-256 hashing tool) has been altered since it was signed. It is ideal for freelancers, consultants, remote teams, students, and small business owners in Pakistan who receive confirmations, approvals, receipts, quotations, milestone agreements, or delivery notes via WhatsApp, email, or chat and want to independently confirm the message content, signer identity, and timestamp have not been tampered with.

Paste the complete signed block — which should include the original message, signer name, date/time, and SHA-256 hash — then click "Verify Signature". The tool re-computes the SHA-256 hash of the message + signer + timestamp portion and compares it with the provided hash. If they match, the signature is **VALID** (content unchanged). If they differ, it is **INVALID** (tampered or corrupted). A mismatch in formatting or extra spaces can also cause failure, so exact pasting is important. The tool shows clear status (Valid / Suspicious / Invalid) with explanations.

All verification happens locally in your browser using the secure Web Crypto API — no data is sent anywhere, ensuring complete privacy. It is especially useful when verifying freelance client approvals, internal team consents, student submissions, or delivery proofs received from others. The tool is mobile-friendly, works offline after loading, and requires no installation or account. It complements tools like the Digital Message Signing Tool by closing the loop: sign once, verify anytime.

Use it regularly to build trust in digital communications, detect tampering early, and maintain professional accountability — fast, free, private, and cryptographically reliable. (Word count ≈ 302)