Eraser alternative · 2026
Eraser is a strong whiteboard for software teams. If what you actually diagram is data platforms (pipelines, warehouses, lineage) Datadef speaks that language natively. Type a sentence and see.
Try the difference right now
Generate the kind of diagram you'd build in Eraser — free, in your browser, no account.
No account needed · Editable canvas, not a picture
On Eraser, AI diagram calls draw from a monthly credit pool tied to your plan, so the allowance resets and lapses with the subscription. Datadef has no subscription: credits are bought once and never expire, and every other feature is included whatever the balance says.
Diagram-as-code is great if you live in it. If you would rather describe the system in plain English, drag what needs moving, and let AI handle the rest, Datadef is visual-first with AI on top.
Eraser draws boxes and arrows. Datadef nodes are typed: tables with columns, pipelines, sources, KPIs, with column-level lineage between them and 2,000+ real AWS, Azure, GCP, and data-tool icons.
| Feature | Datadef | Eraser |
|---|---|---|
| AI diagram generation | Credits, bought once, no expiry | Monthly credits tied to a plan |
| Column-level data lineage | ||
| Data-native nodes (tables, pipelines, KPIs) | ||
| Cloud & data-tool icons | 2,000+ | Limited |
| Diagram-as-code (Mermaid-style) | ||
| Native MCP server for AI agents | ||
| Try without an account | Free scratch canvas | Sign-up required |
| Price for unlimited AI | $12/mo billed yearly | Per seat + credits |
Want the full head-to-head? Datadef vs Eraser, head to head →
Be honest with yourself about what you diagram. For sequence diagrams and UML, Eraser’s markdown approach is genuinely strong. Datadef is the better fit when your diagrams are data platforms, pipelines, warehouses, cloud architecture, and lineage: that is what its node types, icons, and AI are specialized for.
There is no one-click Eraser import, but Datadef’s AI accepts files and screenshots (PNG, PDF, Markdown, draw.io XML). Drop an export or screenshot of your existing diagram and the AI rebuilds it as an editable canvas.
Yes. The scratch canvas at datadef.io/scratch gives you a free AI generation every day with no account. Creating an account unlocks nothing extra because nothing is locked: every feature is included, and it comes with one credit to start generating; after that, credits are bought once and never expire.
Yes: Datadef ships a native MCP server at datadef.io/mcp. Claude Code, Claude Desktop, Cursor, VS Code, Codex, and Gemini CLI can create, edit, and export diagrams directly from a conversation.
Free scratch canvas, no account, no credit card. Sign up and every feature is included, with 1 credit for AI generation, then 25 credits for $5 with no subscription.
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