WThumb is an AI thumbnail maker that helps YouTube creators boost their click-through rate with scroll-stopping thumbnails for videos and Shorts. Paste a link to a thumbnail you like, or upload any image, and WThumb reads it as a brief: the layout, hierarchy and energy carry over, and everything you name changes. No reference in mind? Describe the thumbnail you want and WThumb designs from your words alone, or pick a ready-made template from the Classic or Faceless tab, add your topic and the words, and WThumb makes it for your video.
Save a persona once, your name and a few photos, and you appear in your thumbnails. Rather stay off camera? Pick faceless and the frame is rebuilt without a person.
Choose YouTube 16:9, Shorts 9:16 or both (a template starts at 16:9, and one click makes its Shorts version). Each version is designed for its own frame, so nothing important gets cropped away. Want it different? Press Edit under the picture and say what to change in plain words, on the whole picture or on a part you mark. Every version stays in My thumbnails.
Every thumbnail comes back as a Full HD+ JPEG (2048 by 1152 for 16:9) with no watermark. Start with 2 free credits (1 credit = 1 thumbnail), no card needed. Plans start at $12 a month.
