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Kernsetzer vs Thumbnailr

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

Kernsetzer compared with Thumbnailr
DetailKernsetzer logo KernsetzerThumbnailr logo Thumbnailr
What it doesBook formatting software for self-publishers Free YouTube thumbnail maker that runs in your browser, no sign-up or install required
StageNot given Not given
FoundedNot given Not given
Based inDE Not given
Pricing modelPaid Freemium
PricingOne-time purchase price to be announced before launch. Without a license, the software works with basic features indefinitely but exports carry a watermark. Free mode: £0/forever with full editor, 10 templates, Thumbnail Check, feed test, series mode (3 per batch), 1280×720 PNG & JPG export, no watermark. Pro mode: £4.99/month or £39.99/year (about £3.33/month), includes 16 premium templates, brand kit, unlimited series (up to 200 per ZIP), one-click ba
Key features
  • Supports Windows, macOS and Linux
  • Accepts Word and Markdown manuscripts
  • Generates print-ready PDF for KDP and IngramSpark
  • Creates EPUB 3 for ebook stores
  • Automatic layout of running heads and chapter openers
  • Professional typography with correct quotation marks and dashes
  • German language typography support
  • Works offline without requiring an account
  • Custom theme saving in licensed version
  • 10 free templates including 5 gaming layouts
  • Bold outlined text and face cut-outs
  • Thumbnail Check design checklist
  • Feed test preview in mock social feed
  • 1280×720 PNG and JPG export with no watermark
  • YouTube video link import
  • Works on desktop and mobile browsers
  • Pro: one-click background removal on device
  • Pro: 4K export and brand kit with saved colors and fonts
What makes it different
  • Runs natively on Windows, macOS and Linux while the best-known alternative only runs on Mac
  • Professional typography handling for both English and German
  • Offline desktop app with no account or cloud dependency required
  • One-time purchase model instead of subscription
  • Includes free tools for KDP formatting and quote/dash fixing
  • No sign-up or installation required, works directly in browser
  • All images and projects stay private on your device, never uploaded
  • Completely free with no watermark and no time limits
  • 13 original gaming layouts with dedicated gaming pack
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)00
Referring domains (Majestic)00

5 details filled in for both companies.

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