Create
Thumbnail Generator
Scroll-stopping thumbnails from a prompt or a frame.
Create scroll-stopping YouTube thumbnails from a prompt, optional YouTube or PDF context, and reference frames. Concept first, then polished 16:9 covers at 2K.
- 16:9 thumbnails at 2K
- YouTube & PDF context support
- 11 expression presets
- Up to 20 variations per request
/ Examples
See it in action.
YouTube cover — scroll-stopping CTA frame
Social spot — scroll stopper
Feed optimized — quick hook
/ How it works
Context in. CTR out.
Unsora plans the hook and expression, then generates polished thumbnail variations to pick from.
- 01
Add context
Prompt the topic, paste a YouTube URL or PDF for metadata, and drop template or face references.
- 02
Concept first
Unsora drafts the hook, highlights, audience angle, and style before any pixels are painted.
- 03
Generate variations
Get 16:9 thumbnails with expression presets — up to 20 variants per request.
- 04
Ship the cover
Download the winner or pair it with a clip from Video Generator or AI Clipping.
/ Specs
At a glance.
- Inputs
- Text · images · YouTube / PDF context
- Output
- 16:9 thumbnail image (2K)
- Expressions
- 11 presets (auto, surprised…)
- Variations
- Up to 20 per request
- Credits
- ~10 per output · from ~5 listed
/ Try saying
Prompts that kick it off.
In the dashboard or through Unsora MCP — Claude, ChatGPT, Cursor.
- 01
“Thumbnail for a ‘I tried every AI video tool’ video — shocked face, bold text space.”
- 02
“Generate 8 CTR variants using this channel’s brand colors as reference.”
- 03
“Pull title and topic from this YouTube URL and make three covers.”
Your next 10 UGC videos — today, not next week
Pick a template, paste your scripts, export with subtitles for every platform. No editor invoice.
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