Mermaid vs Eraser: Which Should You Choose in 2026?
Choosing between Mermaid and Eraser comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated February 28, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Mermaid
Create diagrams and charts from text in a simple, intuitive, and highly customizable way.
Best for you if:
- • You want the higher-rated option (8.6/10 vs 8.3/10)
- • You need something completely free
- • You need diagramming features specifically
- • Generates diagrams and charts from text definitions.
- • Supports various diagram types like flowcharts and sequence diagrams.
Eraser
Technical design tool
Best for you if:
- • You need ui/ux design features specifically
- • Technical diagramming for teams
- • Create architecture and flow diagrams
| At a Glance |  Mermaid |  Eraser |
|---|---|---|
Price | Free | Free + Paid |
Best For | Diagramming | UI/UX Design |
Rating | 86/100 | 83/100 |
| Feature | Mermaid | Eraser |
|---|---|---|
| Pricing Model | Free | Freemium |
| Editorial Score | 86 | 83 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 74 |
| Categories | DiagrammingData Visualization | UI/UX DesignDiagramming |
How Mermaid and Eraser Compare
Mermaid
Create diagrams and charts from text in a simple, intuitive, and highly customizable way.
Free · 86/100 score
Eraser
Technical design tool
Free tier available · 83/100 score
Mermaid is a diagramming tool. Eraser is in ui/ux design.
Who Should Use What?
On a budget?
Mermaid is free. Eraser is freemium.
Go with: Mermaid
Want the highest-rated option?
Mermaid: 86/100. Eraser: 83/100.
Go with: Mermaid
Value user reviews?
Neither has user reviews yet.
Go with: Mermaid
3 Questions to Help You Decide
What's your budget?
Mermaid is free. Eraser is freemium. Go with Mermaid if free matters most.
What's your use case?
Mermaid is a diagramming tool. Eraser is in ui/ux design. Pick the category that matches your needs.
How important are ratings?
Mermaid scores higher: 86/100 vs 83/100.
Key Takeaways
Mermaid
- Higher score: 86/100 vs 83
- Completely free
- Our pick for this comparison
Eraser
- More community upvotes (74)
- Better fit for ui/ux design
The Bottom Line
Mermaid (86/100) is our pick.
Frequently Asked Questions
Is Mermaid or Eraser better?
Mermaid scores 86/100 in our evaluation. Mermaid is free and Eraser is freemium.
What are Mermaid and Eraser used for?
Mermaid: Create diagrams and charts from text in a simple, intuitive, and highly customizable way.. Eraser: Technical design tool.
What does Mermaid cost vs Eraser?
Mermaid is completely free. Eraser is freemium (free tier + paid plans). Visit their websites for detailed pricing.