How to Build Verifiable PDF Certificates with QR Codes in Laravel

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A Laravel-based tutorial demonstrates how to generate printable, verifiable PDF certificates for online course completions. Each certificate is built as a Blade view and rendered into a vector PDF using an HTML-to-PDF API, avoiding the limitations of pure-PHP renderers. A QR code embedded in the certificate links to a public verification page hosted on the issuer's domain, backed by a UUID stored in the database. The verification route uses the UUID rather than sequential IDs, preventing guesswork and ensuring each certificate links to a unique, tamper-evident record. The system also automates email delivery, giving learners a document they can attach to job applications and employers can independently confirm.

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