Skyelight vs Mermaid Viewer

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

Skyelight compared with Mermaid Viewer
Detail	Skyelight	Mermaid Viewer
What it does	Website feedback tool for teams and AI agents	Free online Mermaid diagram viewer and editor with live preview, AI generation, and exports
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Freemium	Freemium
Pricing	Free: $0/month with 1 workspace, 1 project, 25 agent threads/month. Pro: $24/month (includes 1 paid seat, each extra $7/month or $9/month yearly) with unlimited projects and agent threads. Team: $49/month (includes 1 paid seat, each extra $12/month or $15/month yearly) with unlimited workspaces.	Free: 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
Key features	Annotate any page element with feedback Chrome extension for instant feedback Automatic feedback classification Screenshots captured with every pin Integration with AI agents via MCP Source code context with Skyelight Build Guest feedback without account Slack and Linear integrations REST API for custom integrations Accessibility checks on elements	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
What makes it different	Passes feedback directly to coding agents to implement fixes Captures browser errors and failed requests with each pin Works on any page without code changes Free reviewers and guest feedback on paid plans Automatically classifies feedback as bugs, ideas or feedback	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
Community votes	0	0
DR (Domain Rating by Ahrefs)	18 −1 (down) since last check	6 +1 (up) since last check
Trust Flow (Majestic)	7	3
Citation Flow (Majestic)	24	23
Referring domains (Majestic)	18	12

5 details filled in for both companies.

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