Certificate Image Generator

Automatically generates shareable images from Moodle Custom Certificates and provides a public, no-login link with a Share button for learners.
📌 Local Certificate Image Generator
Instant Shareable Certificate Images for Moodle
🧩 What This Plugin Does
This plugin automatically converts Moodle Custom Certificate PDFs into images and provides a public share link , allowing learners to showcase their certificates instantly.
✔ Key Features
🖼 Instant Image generation when a learner views their certificate
🔗 Share button added directly on certificate view page
🌍 Public share link — no login required
📱 Works with WhatsApp, Facebook, LinkedIn previews (OG metadata)
🧩 No modification to core mod_customcert plugin
⚡ No cron needed — real-time processing
🛠 Uses Poppler (pdftoppm / pdftocairo) for PDF → Image conversion
🔐 Secure: uses random share codes (no personal data in URL)
🛠 Requirements
Moodle 4.2+
Custom Certificate plugin installed ( mod_customcert )
Poppler utilities installed
Check:
pdftoppm -v