AI-Powered
Video Editing
Product
Solutions
Free Tools
Video Trimmer
Cut and trim video clips
Subtitle Creator
Generate captions from audio
Transcript Extractor
Get text from any video
Video Watermark
Add logo or text overlay
Video Cropper
Resize and crop frames
Video to FAQ
Turn video into Q&A
Video to Help Article
Auto-generate help docs
Subtitle Translator
Translate captions instantly
Background Music
Add royalty-free tracks
Thumbnail Generator
Create click-worthy thumbs
Description Generator
SEO-optimized descriptions
AI Video Trimmer
Smart cuts, auto highlights
Video Merger
Combine multiple clips
Video Rotator
Flip or rotate footage
Speed Changer
Speed up or slow down
Format Converter
Convert between formats
Video Fade In/Out
Smooth intro and outro
Video Summary
AI-powered key takeaways
Video FAQ Generator
Extract FAQs from video
Image Annotator
Mark up screenshots
Video Annotator
Shapes, arrows & text on video
Audio Extractor
Extract audio from video
Subtitle Burner
Burn captions into video
PDF to Video
Convert PDF to video
PPTX to Video
Turn slides into video
Keynote to Video
Convert Keynote to video
Presentation to Video
PDF, PPTX, or Keynote
Google Slides to Video
Turn Google Slides into video
PowerPoint to Video
Convert PPT to video
Video Lighting
Brightness, contrast & more
YouTube Thumbnail Generator
Upload your video. AI picks the best frames and suggests text. Customize the style and download a click-worthy thumbnail.
Drop your video here
or click to browse
How It Works
Four simple steps to a professional thumbnail
Upload your video
Drop a video file or paste a URL. We support MP4, MOV, and WebM up to 500 MB.
AI analyzes your content
Gemini AI watches your video, picks the best frames, and suggests thumbnail text.
Customize your thumbnail
Choose a frame, pick a style template, add text, and adjust colors to match your brand.
Download & upload
Download your 1280x720 thumbnail as PNG. Ready to upload to YouTube.
Upload your video
Drop a video file or paste a URL. We support MP4, MOV, and WebM up to 500 MB.
AI analyzes your content
Gemini AI watches your video, picks the best frames, and suggests thumbnail text.
Customize your thumbnail
Choose a frame, pick a style template, add text, and adjust colors to match your brand.
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.