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Mermaid Viewer vs mask bridge

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

Mermaid Viewer compared with mask bridge
DetailMermaid Viewer logo Mermaid Viewermask bridge logo mask bridge
What it doesFree online Mermaid diagram viewer and editor with live preview, AI generation, and exports Free, open-source plugin for Lightroom Classic that exports masks as PNG, TIFF or JPEG files
StageNot given Not given
FoundedNot given Not given
Based inNot given FR
Pricing modelFreemium Open source
PricingFree: unlimited editor and preview, 3 saved diagrams, 5 AI uses total, PNG export 1× with watermark. Starter: $6.99/month or $69.90/year; 30 saved diagrams, 500 AI conversations per month, PNG export up to 4× without watermark. Pro: $11.99/month or $119.90/year; unlimited diagrams, unlimited AI, PNG Pay what you want, from €0
Key features
  • Live preview of Mermaid code as you type
  • AI diagram generator, editor and syntax fixer
  • PNG export on every plan; JPG, SVG and PDF on Pro
  • All 22+ Mermaid diagram types supported
  • Share diagrams via public links and embeds
  • Save diagrams to cloud with folders and version history
  • Keyboard shortcuts and autocomplete
  • Mobile-responsive editor with pan and pinch-zoom
  • Export masks as PNG, TIFF or JPEG
  • Batch process multiple images and sequences
  • Local AI-powered object detection with RF-DETR
  • Standard and HD Fine Detail quality modes
  • Generate transparent PNG cutouts
  • Offline processing without internet or account
  • Matching filenames for images and masks
  • macOS and Windows support
  • MIT open-source license with source code on GitHub
  • Apple-signed and notarized builds
What makes it different
  • No account or sign-up required to start editing diagrams
  • Affordable pricing: Starter at $6.99/month, Pro at $11.99/month
  • Diagrams render in your browser; nothing stored unless you choose to save
  • Fast editor with instant rendering and clear error messages
  • Exports masks as image files for use in 3D workflows, compositing and other tools outside Lightroom
  • Processes images locally on your computer with no internet or account required
  • Supports batch workflows for multi-view sequences used in photogrammetry and Gaussian splatting
  • Open source under MIT license with readable and modifiable code
  • Pay-what-you-want pricing with no license key required
Community votes00
DR (Domain Rating by Ahrefs)8 +1 (up) since last check2 no change since last check
Trust Flow (Majestic)32
Citation Flow (Majestic)2314
Referring domains (Majestic)124

5 details filled in for both companies.

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