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 there is a counter to watch. Datadef Pro has none: unlimited AI diagrams and edits under fair use for a flat $12 a month, or $8 billed yearly, and the scratch canvas gives you 1 AI diagram and 2 AI edits a day with no account. Paste SQL, Prisma, or Terraform and every table and resource comes out exactly as written.
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 | Unlimited on Pro, 1 AI diagram a day free | 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 | $8/mo billed yearly, flat | 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 1 AI diagram and 2 AI edits a day with no account, plus manual editing and PNG, JPEG and JSON export. Pro unlocks unlimited AI, saved projects, repo sync, live embeds and MCP for $12 a month or $96 a year, after a 7-day free trial.
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: 1 AI diagram and 2 AI edits a day. Pro unlocks unlimited AI, saved projects, repo sync, live embeds and MCP for $12 a month or $96 a year, after a 7-day free trial.
Open the free canvas