Vidocu
Free Tool

YouTube Thumbnail Generator

Upload your video. AI picks the best frames and suggests text. Customize the style and download a click-worthy thumbnail.

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Drop your video here

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How It Works

Four simple steps to a professional thumbnail

1

Upload your video

Drop a video file or paste a URL. We support MP4, MOV, and WebM up to 500 MB.

2

AI analyzes your content

Gemini AI watches your video, picks the best frames, and suggests thumbnail text.

3

Customize your thumbnail

Choose a frame, pick a style template, add text, and adjust colors to match your brand.

4

Download & upload

Download your 1280x720 thumbnail as PNG. Ready to upload to YouTube.

Why Use This Tool

AI-powered frame selection

Our AI watches your video and picks the most engaging, high-contrast frames automatically.

6 style templates

Professional layouts designed for clicks: tutorial, presenter, before/after, and more.

Smart text suggestions

AI suggests thumbnail titles based on your video content. Edit or write your own.

Full customization

Control text color, size, position, and style. Pick from presets or use your own brand colors.

Frequently Asked Questions

MP4, MOV, and WebM files up to 500 MB.

All thumbnails are generated at 1280x720 pixels — the recommended size for YouTube.

Yes. Upload your video, customize your thumbnail, and download it. Sign in to keep your history.

Yes. After the AI analysis, you can upload a custom image to use as the thumbnail base.

We use Google Gemini to watch your video and identify the best moments for thumbnails. It suggests frames, text, and a style that fits your content.

Absolutely. Full control over title text, font size, text color, position, and text style (shadow, outline, box background, or none).

Need more from your videos?

Vidocu turns videos into subtitles, voiceover, translations, and help articles — automatically.

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