Generate Image

Title text for the image

Description text for the image

Subtitle text (above title)

Optional logo image URL

Optional custom image URL

Template name (e.g., "twilight", "daybreak")

HMAC signature (required when authentication is enabled)

Output format: png (default), webp, jpeg

Scale factor for output resolution (0.1-max_scale, default: 1.0)

Quality for lossy formats (1-100, default: 90, ignored for PNG)