Thumbnails that get the click
in under 60 seconds.
Describe the thumbnail you want and FatThumb generates 1-4 variations with your face consistent every time. 1280x720 PNG ready for YouTube Studio - no design skills required.
< 60s
From a text prompt to 1-4 finished thumbnail variations.
1280x720
Exact PNG output, dropped straight into YouTube Studio.
Same face
Your Person profile keeps your likeness consistent every run.
Why FatThumb
Everything you need to grow
your channel - nothing you don't.
Stop paying designers and fighting design tools. FatThumb gives you face-consistent generation, an inspiration library, and A/B variations in one place.
Face Consistency
Upload 1-5 photos once and your exact face shows up in every thumbnail.
AI Generation
Text prompt to 1-4 variations in under 60s with Gemini 3 Pro or GPT Image 2.
Inspiration Library
Paste a YouTube URL and reuse its style, colors, and composition.
A/B Variations
Generate up to four options at once and compare them side by side.
Template & Podcast Modes
Reuse a winning thumbnail as a template and swap guests in seconds.
Bring Your Own Key
Switch to your own Gemini and OpenAI keys for near-zero marginal cost.
The problem
Great thumbnails are
slow and expensive.
The old way
You publish daily, but every thumbnail means waiting on a designer, paying per asset, or fighting design tools yourself.
The new way
Describe it, hit generate, and FatThumb delivers click-ready thumbnails with your face locked in - in under a minute.
FatThumb keeps my face consistent in every thumbnail. I describe the shot, pick a variation, and upload - no designer, no waiting.
Sophie
Content Creator
I publish daily and a thumbnail now takes under a minute instead of hours in Photoshop. The A/B variations are a game changer.
Alex
YouTuber
Podcast mode lets me swap guests while keeping my whole style intact. Every episode looks like part of the same series.
Jordan
Podcaster
FatThumb cut my thumbnail cost to almost nothing. With my own API key I generate as many variations as I want, and my face is the same every single time.
Michel
Faceless-to-face Creator
Features
Everything you need for the click.
Nothing you don't.
See FatThumb in action - from face-consistent generation to A/B variations and your own API keys.
Your face, locked in
Upload 1-5 photos to create a Person profile and your exact likeness appears in every thumbnail - consistent from the first run.
Prompt to thumbnail in 60s
Describe the shot and get 1-4 variations in under a minute with Gemini 3 Pro Image or OpenAI GPT Image 2.
Steal the style, not the face
Paste a YouTube URL and the AI extracts its style, colors, and composition so you can reference it in your own generations.
Test variations side by side
Generate up to four options in one click and compare them before you commit to the upload.
Template & Podcast modes
Reuse a thumbnail you love as a template, or swap podcast guests while keeping the style, lighting, and brand.
Conversational thumbnail agent
Paste a link or describe what you want and the AI agent builds the thumbnail with you in a chat.
1280x720 PNG, ready to upload
Every generation is the exact YouTube size, no cropping or retouching - paid plans drop the watermark.
Bring your own API keys
Run on your own Gemini and OpenAI keys for unlimited generations at near-zero marginal cost.
Start making thumbnails that convert
Use FatThumb to generate face-consistent YouTube thumbnails in seconds - upload your photos, describe the shot, and pick your favorite variation.
Get startedDescribe it once,
ship the perfect frame.
Let the AI handle the design while your Person profile keeps you looking like you - then download a 1280x720 PNG, ready to upload.
Ready to ship better thumbnails?
Generate your first 5 thumbnails free - no card, no designer, your face consistent from the first run.
Pricing
Simple pricing, no surprises.
Start free and upgrade when you need more. No hidden fees.
free
Try FatThumb free with 5 watermarked thumbnails
$0
USD
Billed monthly
- 5 thumbnails / month
- 2 face profiles
- 1 team member
- Gemini 3 Pro model
pro
150 thumbnails a month, both AI models, and no watermark
$20
USD
Billed monthly
- 150 thumbnails / month
- Unlimited face profiles
- 5 team members
- Both AI models
- No watermark
- Up to 4 variations
ultra
500 thumbnails a month, both models, and priority generation
$49
USD
Billed monthly
- 500 thumbnails / month
- Unlimited face profiles
- 50 team members
- Everything in Pro
- Priority generation
- Bring your own keys
Questions & answers
What is FatThumb?
FatThumb is an AI YouTube thumbnail generator. You describe the thumbnail you want and it produces 1-4 variations with your face kept consistent - a 1280x720 PNG ready for YouTube Studio.
How does face consistency work?
You create a Person profile by uploading 1-5 photos of your face. Every generation reuses that exact likeness, so you stay recognizable across all your thumbnails, even on the first run.
Which AI models do you use?
Gemini 3 Pro Image is the default, and OpenAI GPT Image 2 is available on paid plans. Output is always an exact 1280x720 PNG.
How fast is it and what does it output?
Most generations finish in under 60 seconds and return a 1280x720 PNG sized for YouTube Studio - no cropping or retouching needed. Free thumbnails include a small watermark; paid plans remove it.
What does it cost?
Start free with 5 thumbnails and no card. Pro is $20/mo for 150 thumbnails a month, Ultra is $49/mo for 500, and a one-time Lifetime plan lets you bring your own API keys.
Can I use my own API keys?
Yes. With bring-your-own-key mode you connect your own Gemini and OpenAI keys and generate on your own quota at near-zero marginal cost.
Do you have free tools?
Yes. FatThumb includes free, no-signup tools like a YouTube thumbnail downloader and a video card generator to help you move faster.
Since I started using FatThumb, my thumbnails finally look consistent. Same face, same vibe, every upload.
Eva
Content Creator
Pasting a YouTube URL and reusing its style is the fastest way I've found to nail a thumbnail direction.
Lucas
Video Editor
I generate four variations, drop them next to each other, and ship the winner. No more guessing which thumbnail to use.
Mia
Channel Manager
I was skeptical AI could keep my face right, but FatThumb nails it on the first run almost every time.
Noah
Faceless Creator
The 1280x720 PNG goes straight into YouTube Studio. Zero cropping, zero retouching.
Isabella
Solo YouTuber
As an agency we run a Person profile per client and deliver way more thumbnails per week than before.
Oliver
Agency Owner
Bringing my own API key means I can generate as much as I want for basically nothing.
Sophia
Daily Vlogger
FatThumb replaced a $15-per-thumbnail freelancer for my whole channel network.
Elijah
Network Operator
Template mode lets me take a thumbnail that performed well and spin off a whole series from it.
Charlotte
Series Creator
The conversational agent feels like having a designer on call. I describe it, it builds it.
James
Educator