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PrepMyPost vs Chalk

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

PrepMyPost compared with Chalk
DetailPrepMyPost logo PrepMyPostChalk logo Chalk
What it doesFree browser-based tools for social media posts, images, PDFs and small business paperwork A native macOS drawing app for quick sketches, screenshot markup, and AI-generated diagrams
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Free: $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.
Key features
  • Image resizer for multiple platform sizes in one ZIP
  • AI background remover at full resolution
  • Photo filters and effects including blur, pixelate, black and white
  • Image compression and format conversion for JPG, PNG, WebP
  • PDF creation from text, images and designed documents
  • QR code generation for links, WiFi and contacts
  • Character counters for platform-specific limits
  • Domain and username checker across registries and social platforms
  • 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
What makes it different
  • All tools run in your browser with no file uploads or server processing
  • No account, no watermark and no daily limits required
  • Tools continue working even in airplane mode after loading
  • 103 specialized free tools covering social media, images, PDFs and business documents
  • 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
Community votes00
DR (Domain Rating by Ahrefs)2 −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)024
Referring domains (Majestic)046

4 details filled in for both companies.

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