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WThumb vs Sumi

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

WThumb compared with Sumi
DetailWThumb logo WThumbSumi logo Sumi
What it doesAI thumbnail maker for YouTube that remakes references around your title and persona 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
PricingFree: 2 credits. Starter: $12/month (40 credits) or $9/month billed yearly. Creator: $28/month (160 credits) or $21/month billed yearly. Studio: $56/month (400 credits) or $42/month billed yearly. 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
  • Reference-based thumbnail generation from YouTube links or uploaded images
  • Prompt-based thumbnail generation from video descriptions
  • Persona system with face generation or faceless options
  • Full HD+ output at 2048 × 1152 for 16:9 and 1152 × 2048 for 9:16
  • Edit thumbnails using plain text descriptions
  • Support for multiple languages in thumbnail text
  • Library of thousands of high-performing thumbnails from popular channels
  • No watermark on any plan including free credits
  • Automatic credit refund if thumbnail generation fails
  • Credit rollover option to carry unused credits to next month
  • 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
  • Reference-led approach gives a strong visual starting point without blank canvas
  • No design skills required, no layers or canvas tools
  • Same high quality generator on all plans including free tier
  • Personalized thumbnails with your face or faceless versions
  • Both landscape 16:9 and vertical 9:16 Shorts formats on every plan
  • 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)2 +1 (up) since last check18 +1 (up) since last check
Trust Flow (Majestic)67
Citation Flow (Majestic)2324
Referring domains (Majestic)870

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