Wurt.app is an AI thumbnail maker for the picture part of a YouTube thumbnail. Describe the scene or upload your own photo, get a bold landscape image with room for a title, then add the words in the editor you already use. It all runs in your browser.
Make a thumbnail imageA volcano behind your desk, a shark in the pool, a rocket in the garage. Describe it in one sentence and Picwurt makes it.
Upload a photo of yourself and change the background, the light, or the props around you with a prompt.
Pick the landscape or wide aspect ratio in the app so the image fills the 16:9 slot on YouTube.
Use 4K Normal for a high-resolution version, up to 4K, which matches the size YouTube now recommends for thumbnails.
A YouTube thumbnail has two parts: the image and the words on top of it. The image is the hard part. It needs the scene, the subject, and the light, which usually means a camera, a studio, or a stock photo that a hundred other channels also use. Picwurt makes that part from one sentence or one photo.
So the fast workflow is simple. Make the image on Wurt, leave a clear area for the title, and then add two to four words in your design tool. At the time of writing, YouTube also has a Test and Compare feature that lets you upload more than one thumbnail for a video, so it pays to make a few versions of the same idea.
Write the prompt in this order: the subject and the emotion, one prop or setting, the light, and where the empty space for text should go. Be literal. Say what you want to see, not what you do not want.
"A young man in a gaming headset leans back in shock with his mouth open, lit by red and blue monitor light, a cracked glowing controller on the desk, dark background, empty space on the right side."
"Close-up of a huge cheeseburger on a wooden board, melted cheese dripping down the side, steam rising, bright warm light from the left, plain dark background with empty space on the left."
"A silver smartphone floats at an angle over a clean white desk, its screen glowing, a small crack running across one corner, soft studio light, large empty area on the right."
"A woman with a red backpack stands on a cliff edge and points at a turquoise lake far below, bright midday sun, clear blue sky across the top third of the frame."
For more on prompt structure, read the prompt engineering guide. Gaming and streaming channels can also see AI for gamers and AI for Kick.
A good thumbnail image can also move. Use Quick Animate to bring the still to life with one tap, or use image-to-video in Vidwurt to direct the motion. The result makes a vertical teaser for YouTube Shorts if you crop or remake the still in portrait. For a 3-second loop on a community post, try the AI GIF generator. For profile art that matches your thumbnails, see the AI profile picture generator.
Yes. An AI image generator such as Picwurt on Wurt.app can make the full thumbnail image from a text prompt or from your own photo. Most creators then add a short title in a design tool before they upload.
At the time of writing, YouTube recommends 3840 x 2160 pixels in a 16:9 shape, with a minimum width of 640 pixels. Save it as a JPG or PNG under 50 MB when you upload from a computer, or under 2 MB from the mobile app. Picwurt's 4K Normal mode makes pictures up to 4K, so you can export at the full size.
Yes. Upload a photo of yourself in Picwurt and describe the new scene, light, or props. For a channel series, upload several reference photos, because more photos of the same person give more consistent results.
Add the title in your design tool, where the font, spelling, and size are exact. In your Wurt prompt, ask for empty space on one side so the text has room.
Wurt.app is free to start: eligible new accounts can get free starting credits to make thumbnail images in Picwurt. After that, you pay per creation with credits, and there is no required monthly subscription.
Describe the scene, pick landscape, and have a few versions ready before you edit the video. Sign in or create an account with an emailed code. Free to start.
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