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Chalk vs Thumbnailr

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

Chalk compared with Thumbnailr
DetailChalk logo ChalkThumbnailr logo Thumbnailr
What it doesA native macOS drawing app for quick sketches, screenshot markup, and AI-generated diagrams Free YouTube thumbnail maker that runs in your browser, no sign-up or install required
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingFree: $0 forever, includes all drawing tools, unlimited sketches in one folder, copy to clipboard as PNG, and auto-save with local-first storage. Pro: coming soon. 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
  • Instant copy-to-clipboard as PNG
  • No accounts or setup required
  • Local-first storage with auto-save
  • Screenshot annotation with arrows, boxes, text, and freehand tools
  • AI diagram generation via Claude, Cursor, Windsurf, and VS Code
  • Refine diagrams through chat
  • Paste screenshot from clipboard
  • Unlimited sketches in one folder
  • Native macOS performance
  • All drawing tools included in free 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
  • Zero-friction design: open, draw, and share in seconds with no setup or accounts
  • Local-first architecture: all sketches stay on your Mac, nothing leaves unless you ask
  • AI integration runs through your own subscription with no proxying of prompts
  • 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)240
Referring domains (Majestic)460

5 details filled in for both companies.

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