Metadata Portal is a self-hosted web interface designed to showcase the most current metadata for blockchain networks, enhancing compatibility with Parity Signer’s offline metadata update process via QR codes. This open-source solution facilitates decentralized deployment, allowing chain owners to host their metadata portals independently. The system utilizes a dual-source architecture: it automatically parses metadata from the blockchain, generating unsigned QR codes and pipeline updates via GitHub actions, and accommodates manually uploaded, signed QR codes ensuring robustness for security-focused users. Automated cron jobs and GitHub actions streamline the metadata update process, triggering notifications and site regeneration seamlessly. Deployment involves a straightforward GitHub Pages setup, supported by OpenCV for image processing. The application, accessible to both Parity and external developers, ensures users retain current metadata for transaction signing via an air-gapped device.