Free tool
Free Podcast Thumbnail Maker with AI
Describe your episode. Get a click-worthy podcast thumbnail.
One free thumbnail a day. Sign up free to generate from your actual video, without a watermark, with variants.
How to use it
Describe the episode
Type the guest, the topic, or the hook that makes this episode worth a click.
Pick a style
Choose a look — bold and high-contrast, cinematic, or clean and minimal.
Generate
Get a 1280×720 podcast thumbnail in seconds. Sign up free to remove the watermark and generate from your episode video.
Podcast thumbnails that actually get the click
Video podcasts live or die by the thumbnail — on YouTube and Spotify's video feed it is the single biggest lever on whether someone hits play. A talking-head-in-a-box thumbnail blends in; a bold, expressive one stands out.
This generates a 1280×720 thumbnail from a plain description using the same AI model behind Thumbn's studio. Name the guest, the topic or the tension, pick a style, and iterate until it grabs.
Free to try, built for every episode
One thumbnail a day is free, watermarked, so you can see the quality before you commit.
Sign up free to remove the watermark, generate thumbnails from your actual episode recording, get multiple concepts per episode, and refine any of them by chatting with the agent — so every drop looks the part without a designer.
Frequently asked questions
- Is the podcast thumbnail maker free?
- Yes — one watermarked thumbnail a day with no account, unlimited and watermark-free when you sign up free.
- What size are the thumbnails?
- 1280×720 (16:9), the size YouTube and video podcasts use for episode thumbnails.
- Do I need design skills?
- No. Describe the episode and pick a style — the AI generates the thumbnail.
- Can it use my episode video?
- Sign up free and the studio builds thumbnails from your uploaded episode or link, using the footage itself.
- Does it work for audio-only podcasts?
- Yes — describe the episode and it generates artwork. For square cover art, note the thumbnail is 16:9; crop to 1:1 with our free thumbnail resizer if you need a square cover.
Need the thumbnail, not just the tool?
Thumbn watches your video, finds the frame worth using, writes the concept and renders it at every platform size — then grades its own work and redoes it until it clears the bar.