Mermaid Viewer vs Napkin vs Lucidchart AI

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Mermaid Viewer
vs
Competitor 1
Napkin
Competitor 2
Lucidchart AI
Competitor 3
Suggested competitors for Mermaid Viewer: Eraser91% AI Diagram Maker88% WBWhiteboard by Athena AI86% DG Diagram-Generator86% CodeViz86% Whimsical84% ERBuilder84% Flowova AI84%
Compare
3 tools · best value per row highlighted
Your tool Mermaid Viewer
mermaidviewer.com
Mermaid Viewer runs entirely in your browser
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Competitor Napkin
napkin.ai
Napkin works directly from your text: paste or import it, click generate, and it proposes visuals that match the ideas in the writing.
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Competitor Lucidchart AI
lucid.co
Lucid AI is the set of AI features built into Lucidchart and Lucidspark, Lucid's diagramming and collaborative whiteboard products.
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Traffic estimated monthly website traffic
Monthly visits
143.2Kvisits/mo
1.3Mvisits/mo
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MoM change
▼ 10.9%
▼ 8.5%
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6-month growth
-9.3%
-46.4%
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Global rank web
#317,277
#36,124
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Avg. last 3 months
163.4K
1.4M
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Bounce rate lower is better
45%
41%
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Pages / visit
1.8
3.9
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Visit duration
19s
2m 36s
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Traffic sources
● Direct 81% · ● Referral 19%
● Direct 86% · ● Referral 9%
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Mermaid ViewerNapkinLucidchart AI
0831.2K1.7M2.5M3.3MMermaid Viewer · 158.9KMermaid Viewer · 157.9KMermaid Viewer · 184.8KMermaid Viewer · 170.5KMermaid Viewer · 186.3KMermaid Viewer · 160.7KMermaid Viewer · 143.2KNapkin · 3.3MNapkin · 2.7MNapkin · 2.4MNapkin · 2.3MNapkin · 2.4MNapkin · 2.1MNapkin · 1.8MNapkin · 1.6MNapkin · 1.4MNapkin · 1.3M100K1M10MMermaid Viewer · 158.9KMermaid Viewer · 157.9KMermaid Viewer · 184.8KMermaid Viewer · 170.5KMermaid Viewer · 186.3KMermaid Viewer · 160.7KMermaid Viewer · 143.2KNapkin · 3.3MNapkin · 2.7MNapkin · 2.4MNapkin · 2.3MNapkin · 2.4MNapkin · 2.1MNapkin · 1.8MNapkin · 1.6MNapkin · 1.4MNapkin · 1.3MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
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Starting price
$69.99per month · free tier available
$9per month · free tier available
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Free tier
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Free trial
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API access
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Plans
Free FreeStarter $69.99/yrPro $119.99/yr
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Capabilities input → output
Input
CodeText
DataText
TextVideo
Output
CodeImages
DataImagesSlides
DocumentsImages
Skill level
Intermediate
Beginner-friendly
Beginner-friendly
Categories
Productivity & OfficeAI Diagram Generator
Design & CreativeProductivity & OfficeAI ChartingAI Diagram Generator+3 more
Productivity & OfficeAI Diagram GeneratorAI Mind Mapping
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
6
7
8
Diagrams
Flowcharts
Mind maps
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Diagram assistance
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Code diagramming
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Infographics
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Brainstorming
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Charts
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Data charts
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Mermaid images
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Presentations
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Process maps
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Screen recordings
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Summarizing
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UML diagrams
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
0
0
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.