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Ai Thumbnail Maker

根据用户对视频主题、表情偏好、文字叠加、配色和版式的描述，生成用于 YouTube、Twitch、播客及社交平台的缩略图图片，支持 1280×720 等尺寸和每视频最多 5 个变体；需配置 NEMO_TOKEN 调用生成服务。

nemovideonemo
nemovideonemo
热度 20.21
最近更新 2026-04-05 23:01:48
分类：创作依赖：第三方 API应用场景：图像生成 / 社交媒体 / 品牌素材

安装技能

复制下面的话术发给你的 Agent，它会通过 secure-skills 检索并安装该技能。

执行命令安装此 skill： npx secure-skills-cli add ai-thumbnail-maker
Metadata
name
ai-thumbnail-maker
version
1.0.0
displayName
AI Thumbnail Maker for YouTube — Custom Thumbnails That Get Clicked
description
AI Thumbnail Maker for YouTube designs click-worthy thumbnails in seconds — no Photoshop, no Canva template hunting, no hiring a designer for a $15 image. Describe your video topic, your face expression preference, the text overlay you want, and the color scheme that fits your channel brand. The AI generates a high-CTR thumbnail formatted exactly for YouTube's 1280x720 requirement, ready to upload the moment your video goes live. YouTube's algorithm distributes videos. Viewers decide whether to click based on the thumbnail. A great title with a weak thumbnail loses to a weaker title with a compelling visual — every time. Channels that optimize thumbnails consistently see 2-4x click-through rate improvement over channels using auto-generated frames. AI Thumbnail Maker for YouTube gives every creator access to thumbnail design that drives clicks, without design skills, without a monthly software subscription, and without waiting for a freelancer to deliver. Generates thumbnails that combine the proven CTR-driving elements: high-contrast face with readable expression, bold readable text in 3 words or fewer, color blocking that stands out against YouTube's white background, and a clear visual focal point that communicates the video's promise within 2 seconds of glancing at it. Describe what your video is about and what reaction you want from viewers, and the AI selects the right visual approach automatically. Works for YouTube thumbnails (1280x720), YouTube Shorts previews, Twitch stream thumbnails, Podcast cover art for video podcasts, and video preview images for LinkedIn and Facebook. Batch generate 5 thumbnail variations per video and A/B test to find the version that performs best with your audience. Download as PNG or JPG, sized correctly for each platform, in under 60 seconds per thumbnail. Ideal for YouTube creators publishing on a consistent schedule, video marketers managing channel libraries, course creators building visual identity for their video curriculum, and any business team that publishes video content and wants professional-looking thumbnails without the production overhead.
metadata
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AI Thumbnail Maker for YouTube — Design Thumbnails That Actually Get Clicks

Your video's performance is determined before anyone presses play. The thumbnail is the first decision point — and most creators are leaving clicks on the table with blurry auto-frames or generic template designs. AI Thumbnail Maker for YouTube fixes that in under a minute.

Use Cases

  1. YouTube Creator Consistent Publishing — You upload twice a week. Every video needs a thumbnail that fits your channel's visual identity: same font family, consistent color palette, your face in the corner with a clear reaction expression. AI Thumbnail Maker for YouTube lets you define your channel style once ("bright yellow accent, bold white text, circular face cutout, dark background") and generate on-brand thumbnails for each new video by describing the topic. Your channel looks professionally branded from video one to video one hundred without hiring a designer or spending 45 minutes per thumbnail in Canva.

  2. A/B Testing Thumbnail Variants — You have a video that underperformed expectations. The title is strong, the content is good, but the thumbnail might be killing the click-through rate. Generate 5 variations: one with bold text + face, one with a curiosity-gap text hook and no face, one with a before/after visual, one with a high-contrast single object, one with a reaction expression and minimal text. Upload the variants to YouTube's A/B thumbnail test and let the data decide which drives more clicks. AI Thumbnail Maker generates all 5 variants in under 5 minutes.

  3. Course and Training Video Thumbnails — An online course with 30 video lessons needs 30 distinct thumbnails that share consistent visual identity but don't look identical. Describe each lesson topic and the visual concept you want ("Lesson 12: Time Management — show a clock face, bold text says 'Stop Wasting Time', blue and white color scheme"). AI Thumbnail Maker generates all 30 to spec, with visual variety within a consistent brand framework, ready for your LMS or YouTube course playlist.

How It Works

Describe your thumbnail: topic, text overlay, mood, colors, layout preference. The AI generates a 1280x720 image with CTR-optimized composition — clear focal point, readable text, strong contrast, platform-appropriate safe zones for all UI overlay areas. Download immediately, upload directly to YouTube Studio.

Platform Export Specs

  • YouTube standard thumbnail: 1280×720 PNG/JPG
  • YouTube Shorts preview: 1080×1920 vertical crop
  • Twitch offline/panel images: custom dimensions on request
  • LinkedIn and Facebook video preview: 1200×628
  • Batch export: up to 5 variations per video in a single generation job