How does ThumbRoasty actually work?
Upload a thumbnail (and optionally your video title), and our AI looks at the actual image — colors, composition, text, expression — and generates a genuine, image-specific critique: a score, a written roast, a breakdown across visual hierarchy, readability, and clickability, and a few concrete suggestions.
Is it really free?
Yes. You get 5 free roasts per day, no account and no card required. See the Pricing page for details on why there's a daily cap.
I got "You've used all 5 free roasts for today" — what now?
That's the daily limit kicking in. It resets on a rolling 24-hour basis, so come back tomorrow (or if it's urgent, reach out via the contact link below).
What image formats and sizes are supported?
JPG, PNG, and WEBP, up to 5MB. If your file is a different format or too large, you'll see an error right at upload before anything is sent anywhere.
I got "The roast engine choked on that image" — is that a bug?
Usually not — that message means our AI provider returned a temporary error, most often because of high demand. We already retry once automatically behind the scenes; if it still fails, just try again in a moment.
Is my uploaded thumbnail stored or shared with anyone?
Your image is sent to our AI provider to generate the roast and is not saved to our own servers afterward. See the Privacy Policy for the full picture of what's collected and why.
Can I use this for thumbnails that aren't YouTube videos?
Sure — the AI will still analyze visual hierarchy, readability, and clickability for any thumbnail-style image, though the feedback is tuned with YouTube conventions in mind.
I found a bug or have feedback — how do I reach you?
Email support@thumbroasty.com. We read everything, even if we can't reply to all of it right away.