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Thumio
What Thumio is
Thumio is an AI-powered thumbnail editor for YouTube creators. It can modify an uploaded thumbnail from a written description, generate variations, compare concepts, and help prepare images for publishing. Its Bulk Edit feature analyzes a YouTube channel, creates thumbnails at scale, produces CTR reports, and exports generated images in a ZIP file. Uploads can be JPEG, PNG, or WebP, must be under 30MB, and are processed in a 16:9 aspect ratio. Finished images download as PNG or JPEG; 1280×720 is recommended for YouTube. The YouTube connection can read video metadata and set or update thumbnails, while excluding watch history, subscriptions, comments, and playlists. A Chrome extension works with YouTube and YouTube Studio and processes displayed view counts and upload dates locally. All plans include Gemini Flash, GPT Image, and Gemini Pro models. Projects, preferences, and creative work stay in the user's browser and are not automatically synchronized or backed up across devices. The free Hobby plan includes three Thumio Scores per day and up to two channels; generation requires credits. Paid plans are listed from $8/mo.
Who it suits
Thumio may suit YouTube creators who want AI-assisted thumbnail edits, channel-wide generation, or reports on thumbnail performance. It also fits users who work through YouTube or YouTube Studio in Chrome.
What it does well
- Edits thumbnails from written descriptions.
- Bulk Edit generates images and CTR reports.
- Supports JPEG, PNG, and WebP uploads.
- All plans include three named AI models.
- Free plan supports up to two YouTube channels.
What to know first
- Free plan allows three Thumio Scores per day.
- Generation on the free plan requires credits.
- Creative work is not automatically synced or backed up across devices.
- Uploads must be under 30MB and use a 16:9 aspect ratio.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Hobby | Free forever · 3 Thumio Scores per day · up to 2 YouTube channels · generation requires credits | Free |
| Ultra | $129/month · 4,000 credits/month · annual billing available | $129 a month |
| Creator | $19/month · 400 credits/month · 25 GB media storage · up to 100 YouTube channels | $19 a month |
| Team | $25 per seat per month · 500 shared credits per seat/month · 2–50 seats | $25 a month |
| Creator+ | $59/month · 1,200 credits/month · annual billing available | $59 a month |
As thumio.com lists them, read 30 Sept 2026. The maker's own page has the final word.
Verdict
Thumio focuses on creating and managing YouTube thumbnails, with both individual edits and channel-scale tools. Consider its free-plan limits and browser-based storage if you need to generate frequently or move projects between devices.
Facts from Thumio's own pages
- AI editing
- Users can upload an existing thumbnail and describe changes for AI reshooting, restyling, or refinement. · thumio.com, 30 Sept 2026
- AI models
- All plans include access to Gemini Flash, GPT Image, and Gemini Pro models. · thumio.com, 30 Sept 2026
- AI provider
- Thumio uses Google Gemini for image editing, background removal, analysis, brainstorming, and other creative tooling. · thumio.com, 30 Sept 2026
- Bulk Edit
- Bulk Edit analyzes a YouTube channel, generates AI-optimized thumbnails at scale, produces CTR reports, and exports generated thumbnails as a ZIP. · thumio.com, 30 Sept 2026
- Chrome extension
- Thumio offers a Chrome extension that integrates with YouTube and YouTube Studio and processes displayed view counts and upload dates locally on the device. · thumio.com, 30 Sept 2026
- Commercial use
- Thumbnails created with Thumio templates can be used and sold for personal or commercial purposes without restrictions. · thumio.com, 30 Sept 2026
- Data storage
- Projects, preferences, and creative work are stored in the user's browser and are not automatically synchronized or backed up across devices. · thumio.com, 30 Sept 2026
- Exports
- Finished thumbnails can be downloaded in PNG or JPEG format, with 1280×720 recommended for YouTube. · thumio.com, 30 Sept 2026
- Image formats
- Thumio supports JPEG, PNG, and WebP uploads; files should be under 30MB and are processed in a 16:9 aspect ratio. · thumio.com, 30 Sept 2026
- Product
- Thumio is an AI-powered thumbnail editor built for YouTube creators to edit thumbnails, generate variations, compare concepts, and publish faster. · thumio.com, 30 Sept 2026
- Security
- Thumio says it uses encryption in transit, access controls, monitoring, and secure development practices to protect personal data. · thumio.com, 30 Sept 2026
- Support
- The Terms of Service lists support contact email [email protected]. · thumio.com, 30 Sept 2026
- YouTube integration
- The YouTube integration accesses video metadata and can set or update thumbnails, while excluding watch history, subscriptions, comments, and playlists. · thumio.com, 30 Sept 2026
Where Thumio stands on Freedom251
- Video Thumbnail Makers#32 of 46