What is the difference between Mermaid and tldraw?

Mermaid is best for Developers wanting text-based diagrams in markdown, while tldraw is best for Developers wanting an embeddable whiteboard canvas. Mermaid starts at Free and tldraw starts at Free.

Is Mermaid or tldraw cheaper?

Mermaid starts at Free and is free. tldraw starts at Free and is free.

Is there a free alternative to tldraw?

Both Mermaid and tldraw offer free tiers.

Mermaid vs tldraw (2026) — notanothertool

At a glance

	Mermaid	tldraw
Best for	Developers wanting text-based diagrams in markdown	Developers wanting an embeddable whiteboard canvas
Starting price	Free	Free
Free tier	✓	✓
Open source	✓	✓
Free tier available	✓	✓
Open source	✓	✓
Embeddable	—	✓
Git-Friendly	✓	—
Many Chart Types	✓	—
Markdown	✓	—
Multiplayer	—	✓
Open Source	—	✓
SDK	—	✓
Text-Based	✓	—

Mermaid

Strengths

Open source and transparent
Includes Text-Based as a core feature, purpose-built for diagramming workflows
Fully open-source — you can self-host, audit the code, and avoid vendor lock-in
The core product is free with no paywalled essentials

Weaknesses

May lack some advanced features
Self-hosting is free but requires server maintenance and DevOps knowledge
Fewer built-in features means you may need additional tools to cover gaps
Ecosystem of third-party integrations is smaller than the market leaders in diagramming

Try Mermaid → Full review

tldraw

Strengths

Open source and transparent
Open-source codebase gives you full transparency and community-driven development
Fully open-source — you can self-host, audit the code, and avoid vendor lock-in
The core product is free with no paywalled essentials

Weaknesses

May lack some advanced features
Self-hosting is free but requires server maintenance and DevOps knowledge
Fewer built-in features means you may need additional tools to cover gaps
Ecosystem of third-party integrations is smaller than the market leaders in diagramming

Try tldraw → Full review

The bottom line

Pricing: Both Mermaid and tldraw are free, so this decision comes down to features and philosophy rather than budget.

Feature gaps: Mermaid offers Git-Friendly, Many Chart Types and Markdown that tldraw lacks. tldraw brings Embeddable, Multiplayer and Open Source that Mermaid does not have.

Team fit: Mermaid is geared toward individual users and small setups, while tldraw is aimed at any size teams. Pick the one that matches where your team is today and where it is headed — migrating tools later is always painful.

Open source: Both Mermaid and tldraw are open source, so self-hosting and code audits are on the table with either choice.

Where each tool shines: Mermaid's biggest strengths are: open source and transparent. includes text-based as a core feature, purpose-built for diagramming workflows. tldraw's biggest strengths are: open source and transparent. open-source codebase gives you full transparency and community-driven development.

Watch out for: With Mermaid, users commonly note that may lack some advanced features. With tldraw, the main complaint is that may lack some advanced features.

Choose Mermaid if...

Your profile matches its sweet spot: developers wanting text-based diagrams in markdown
You specifically need Git-Friendly and Many Chart Types
You care about includes text-based as a core feature, purpose-built for diagramming workflows
Your team size fits the individuals profile Mermaid is designed for

Choose tldraw if...

Your profile matches its sweet spot: developers wanting an embeddable whiteboard canvas
You specifically need Embeddable and Multiplayer
You care about open-source codebase gives you full transparency and community-driven development
Your team size fits the any size profile tldraw is designed for