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Thumbo vs Sumi

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Thumbo compared with Sumi
DetailThumbo logo ThumboSumi logo Sumi
What it doesAI thumbnail maker for YouTube that generates scroll-stopping covers in seconds AI manga translator that re-letters your language into the art
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingLite: $19/month (or $14/month annually) for 35 thumbnails per month. Starter (most popular): $39/month (or $29/month annually) for 75 thumbnails per month. Pro: $79/month (or $59/month annually) for 200 thumbnails per month. All plans include a 7-day free trial and full access to 50+ style packs. Fr Free tier: 1 page without account, 5 pages on signup, 5 claimable daily. Pro: $6.99/month (1,500 pages/month). Pro+: $14.99/month (4,000 pages/month). Studio: $39.99/month (12,000 pages/month). Yearly billing available: Pro $69.99/year, Pro+ $149.99/year, Studio $399.99/year.
Key features
  • 50+ pre-made Style Packs for different niches
  • Copy the visual style of any YouTube video or channel
  • Custom persona from 1-3 photos for consistent facial appearance
  • Plain-language editing with natural text commands
  • 2K resolution thumbnails in 16:9 and 9:16 formats
  • Automatic video analysis from YouTube links
  • Video caption support up to 40 characters
  • Faceless channel support
  • Free tools including YouTube thumbnail downloader and resizer
  • Version history to revert to earlier thumbnail versions
  • Instant page-by-page translation without uploading
  • Works on pages requiring login
  • Text erasing and re-lettering in artwork
  • Native vertical CJK typesetting
  • Offline translation on iPhone and iPad
  • Batch translation up to 20 pages
  • Works on 30 official publisher platforms
  • Chrome, Firefox, Edge and Safari extensions
  • Editable translations in reader
What makes it different
  • Generate finished thumbnails in 30 seconds without designer experience
  • No complex prompts required—choose from proven style packs instead
  • Automatically reads video content to suggest appropriate thumbnail designs
  • Consistent facial appearance across all thumbnails via persona feature
  • 2K resolution exports optimized for YouTube that stay under 2MB file limit
  • Erases original text and re-letters into artwork instead of pasting white boxes
  • Translates in-place on pages you're already reading without uploading chapters
  • Fully offline translation on iPhone and iPad with no data leaving device
  • One subscription across web, extensions, and all native apps
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)13 +1 (up) since last check18 +1 (up) since last check
Trust Flow (Majestic)77
Citation Flow (Majestic)2424
Referring domains (Majestic)2170

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