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Castov vs Mobile Document Scanner JS Edition

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

Castov compared with Mobile Document Scanner JS Edition
DetailCastov logo Castov Mobile Document Scanner JS Edition
What it doesFast, 100% client-side developer platform with zero-data logging Scan, enhance, and correct document images in the browser with mobile cameras
StageNot given Established
FoundedNot given 2003
Based inNot given CA
Pricing modelFree Not given
PricingAll tools are free with no usage limits. The site may show ads in the future to cover running costs. Not given
Key features
  • Multi-timezone support with IANA database and daylight saving time
  • JSON to TypeScript conversion
  • JWT decoder and inspection
  • Cron expression parser and generator
  • End-to-end encrypted environment variable vaults
  • P2P multiplayer canvas with WebRTC and CRDT
  • Steganography for hiding encrypted secrets in images
  • Service Worker API mocker for frontend testing
  • Encrypted URL shares with hash fragment storage
  • Automatic document boundary detection in video feed
  • Perspective cropping and document correction
  • Pre-built UI components and Views
  • Document preview with result view
  • Canvas and blob output formats
  • Import existing images from device
  • Modular, configurable Views for customization
  • Minimal code implementation
What makes it different
  • Zero-data logging: no keystroke sent to external servers, all processing in browser memory
  • 100% client-side operation works entirely offline
  • Unified ecosystem across web, CLI, and AI agents via MCP Server
  • Sub-millisecond performance with local execution
  • Tool chaining and piping for seamless multi-stage workflows
  • Works with just a few lines of code for complete document scanning workflows
  • Pre-designed, ready-to-use UI components reduce design effort
  • Automatic frame selection eliminates manual image snapping
  • Tailored configuration objects for common scenarios
  • Mobile camera alternative to hardware scanners
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 −4 (down) since last check64 no change since last check
Trust Flow (Majestic)141
Citation Flow (Majestic)1943
Referring domains (Majestic)7944

3 details filled in for both companies.

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