DiagramSmith
Overview
DiagramSmith is a diagram maker that runs in your browser, with apps on Android and Windows. Make flowcharts, UML, ER diagrams, Gantt charts, timelines, org charts and mind maps from a template or blank canvas, open .drawio and Mermaid files, and export PNG, SVG or PDF. No account needed for free use. Pro adds vector PDF, editable .drawio export and a flowchart check.
A note from the maker
We built DiagramSmith because making a clean diagram often means signing up or installing something heavy. We focused on starting fast from a template, opening .drawio and Mermaid files, and exporting clean PNG, SVG or PDF with no account.
Facts from official sources
Key features
- Flowcharts, UML, ER diagrams and Gantt charts
- Timelines, org charts, mind maps and Venn diagrams
- Start from a template or a blank canvas
- Open .drawio and Mermaid files
- Export to PNG, SVG or PDF
- No account needed for free use
Platforms
Web / Android / Windows
Pricing
| Pricing type | Free + paid |
|---|---|
| Free plan | Yes |
| Price | All tools and editing are free with no account. Pro (paid) price not confirmed (checked 2026-11-14) |
Developer
Jun · https://skyseedllc.com/ · United States (the official terms name SKYSEED TECH LLC, a Wyoming LLC, Rockville, MD, United States)
| Web version | Yes |
|---|---|
| Languages | English (Declared by the developer) |
| Uses AI | No |
| AI technology | Unverified |
| Indie / small team | Unverified |
| Released | Unverified |
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