A color gradient, not footage from any film or game, and not a trademarked flame mark.
Flame fill
Letters shade from hot yellow to red. Titan One is a free heavy display Google Font that holds a thick stroke.
Safety on photos
Dark photos hide the card. For light photos, use Transparent and a stronger outline.
Frequently Asked Questions
Is this animated fire?
No. Still image only.
Can I type a long quote?
Short words look hotter. Long lines get hard to read with this weight.
Also try the Bluey Font Generator for more Unicode text styles.