SnapGuard is an AI-integrated web application that detects and verifies image tampering using blockchain technology. The system uses OCR (Optical Character Recognition) to extract details from uploaded images, generates a SHA-256 hash, and stores it securely on a blockchain. Upon future uploads, SnapGuard compares the new image's hash with the original to verify authenticity, enabling secure document validation. 1.Integrated OCR to extract textual content from images (e.g., IDs, certificates) 2.Used SHA-256 cryptographic hashing to generate unique image fingerprints 3. Leveraged blockchain to store and verify tamper-proof records 4. Built with ReactJS for frontend and Node.js/Express.js for backend logic 5. Ensured file storage and verification flow was seamless and secure