Mermaid Online
Browser diagram editor for Mermaid code, with live preview, templates, PNG and SVG export and AI generation.
Best for: developers and documentation teams drawing flowcharts and workflow diagrams from text, with AI generation paid by credits
- Starting price
- from $9.90/mo
- Free plan
- Not stated by the vendor
- Free trial
- Not stated by the vendor
- Checked on
- 2026-10-17
Mermaid Online is a browser editor for diagrams written in Mermaid text syntax: flowcharts, sequence, class, state, ER, user journey, Gantt and pie charts. Diagrams render as you type, and you can start from templates and export SVG or PNG. AI text-to-diagram, image-to-diagram and code optimization are paid with credits. The page says it is designed for developers and documentation teams, so it suits marketers mainly for process and workflow diagrams.
Key features
- Live preview that renders the diagram as you type Mermaid syntax
- Template library covering flowcharts, sequence, class, state, ER, user journey, Gantt and pie charts
- Export as SVG or PNG, or copy the diagram or the Mermaid code
- AI text-to-diagram and image-to-diagram generation, paid with credits
- AI optimization of existing Mermaid code, paid with credits
- Visual styling for themes, colors, font sizes and node shapes
What stands out
- One-time and lifetime options as well as a monthly package
- Manual styling and export are described as needing no AI credits after purchase
- The FAQ says it is free to use for personal and commercial projects
Trade-offs
- Not a marketing tool: the page says it is designed for developers and documentation teams
- The page does not say what the free tier includes, and lists no free credits
- Credit terms are unclear: the monthly package lists both monthly access to 100 credits and 100 credits total, and the lifetime credit amount is not stated
Pricing
| Plan | Price | Fees | Includes |
|---|---|---|---|
| Monthly package | $9.90 per month | Not stated |
|
| One-time package | $19.90 once for 100 credits |
| |
| Lifetime package | $99.90 once for lifetime access |
|
Prices are in dollars (no currency code shown). Monthly package $9.90 a month (100 credits), one-time package $19.90 (100 credits, 100-diagram storage), lifetime package $99.90 (lifetime access plus everything in the other plans). Each lists up to 100 AI Mermaid generations and 100 optimizations. The page does not say how long a one-time purchase lasts beyond its label. Marketing relevance is low: it is a diagramming tool that marketers can use for process and workflow diagrams.
Checked 2026-10-17. Source: mermaidonline.live. Prices change; confirm on the vendor's site before you buy.
Own Mermaid Online? Add a verified badge to your site
Copy this into your website. It shows the date we last checked your listing and links back to this page.
<a href="https://softwareformarketers.com/tools/mermaid-online"><img src="https://softwareformarketers.com/badge/mermaid-online" alt="Mermaid Online is verified on Software for Marketers"></a>
Compare Mermaid Online
Sponsored
Toolicly
Sponsored149+ built-in AI generators and calculators for hooks, ad copy, emails, social posts, and marketing metrics.
Report an error on this listing
Related tools
3dlogoai
AI logo generator that creates 3D and 2D logos from your company name or slogan, with transparent PNG downloads up to 4K and full commercial rights.
AI Undetectable
AI text humanizer and rewriter designed to make drafts read naturally and reduce AI-detector flags.
from $5/mo
AllSubConverter
Browser-based subtitle toolkit for converting, editing, cleaning, syncing, checking and exporting subtitle files
Free plan · from $4.16/mo
Any3D
Turn product photos and illustrations into 3D starting points with AI.
from $19.90/mo
Anyword
AI copy generation with performance predictions based on marketing data.
from $39/mo
Article Forge
AI article writer that generates 1,500+ word articles in bulk, from $27 a month billed annually with a 5-day trial.
from $27/mo