Freedom251 › AI Diagram Generators
yUML
What yUML is
yUML turns text into diagrams and renders them as SVG or PNG. Its documentation covers class, activity, use case, sequence, state, C4, journey, journey flow, roadmap, and timeline diagrams. The renderer offers eight styles, including clean, midnight, sketch, napkin, and blueprint. In the playground, a plain-English description can become an editable diagram; Fix with AI can help correct DSL errors. Diagrams can be embedded in GitHub, Slack, Confluence, and Notion, while SVGs can be copied into Figma, Keynote, or Google Slides. The API supports GET image embeds and authenticated POST rendering for scripts, CI pipelines, and server-side use. yUML runs on the web, with API and self-hosted options. Free includes public diagrams, limited size, five saved versions per diagram, five AI fixes daily, watermarked exports, and community support. Pro costs $5/user/mo and adds private diagrams, unlimited size and version history, 250 monthly AI fix credits, watermark-free exports, and API access. The legacy renderer remains for existing embeds; new features are on app.yuml.me.
Who it suits
yUML suits writers, founders, educators, engineers, and AI builders who need diagrams for communication, documents, or automation. API and self-hosted options also suit teams incorporating diagram rendering into their workflows.
What it does well
- Covers ten documented diagram types.
- Eight renderer styles are available.
- AI can create and repair diagrams.
- Exports diagrams as SVG or PNG.
- Pro includes private diagrams and API access.
What to know first
- Free diagrams are public.
- Free exports carry a watermark.
- Free limits diagram size and version history.
- Original renderer is in maintenance only.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Pro | Public and private diagrams · Unlimited diagram size and version history · 250 AI fix credits per month · No watermark · Developer API access | $5 a month |
| Pro | Public and private diagrams · Unlimited diagram size and version history · 250 AI fix credits per month · No watermark · Developer API access | $50 a year |
| Free | Public diagrams · Limited diagram size · Last 5 versions per diagram · 5 AI fixes per day · Watermark on exports · Community support | On request |
| Enterprise | Everything in Pro · Unlimited users · SSO · Self-hosted deployment · Custom contracts and SLAs · Dedicated onboarding and support | On request |
As yuml.me lists them, read 7 Oct 2026. The maker's own page has the final word.
Verdict
yUML combines text-based diagram creation with a range of diagram types, styling, and integrations. Check the Free plan’s visibility and export limits, or consider Pro at $5/user/mo for private diagrams and developer API access.
Facts from yUML's own pages
- AI features
- The playground can turn a plain-English description into an editable diagram, and Fix with AI helps correct DSL errors. · yuml.me, 7 Oct 2026
- API
- The API supports GET image embeds and authenticated POST rendering for scripts, CI pipelines, and server-side use. · yuml.me, 7 Oct 2026
- Data handling
- The homepage says Pro accounts can bypass the render cache so generated diagrams are not held on yUML's servers. · yuml.me, 7 Oct 2026
- Diagram types
- The documentation lists class, activity, use case, sequence, state, C4, journey, journey flow, roadmap, and timeline diagrams. · yuml.me, 7 Oct 2026
- Founded
- 2012 · yuml.me, 28 Sept 2026
- Free API limits
- Unauthenticated API rendering is limited to 100 renders per hour and 500 per day per IP, with cache hits excluded from the limit. · yuml.me, 7 Oct 2026
- Headquarters
- Leeds, UK · yuml.me, 28 Sept 2026
- Integrations
- Diagrams can be embedded in GitHub, Slack, Confluence, and Notion, and SVGs can be copied into Figma, Keynote, or Google Slides. · yuml.me, 7 Oct 2026
- Intended users
- The product describes itself for writers, founders, educators, engineers, and AI builders creating diagrams for communication, documents, and automation. · yuml.me, 7 Oct 2026
- Legacy support
- The original yuml.me renderer remains available for existing embeds but is in maintenance only; new features are on app.yuml.me. · yuml.me, 7 Oct 2026
- Maker
- The site identifies the maker as Pocketworks Mobile Ltd. · app.yuml.me, 7 Oct 2026
- Styles
- The renderer offers eight styles: clean, plain, boring, midnight, sketch, napkin, scruffy, and blueprint. · yuml.me, 7 Oct 2026
- Support
- The Free plan includes community support; Pro lists priority support as coming soon, and Enterprise includes dedicated onboarding and support. · app.yuml.me, 7 Oct 2026
- What it does
- yUML creates diagrams from text and renders them as SVG or PNG. · yuml.me, 7 Oct 2026
Where yUML stands on Freedom251
- AI Diagram Generators#25 of 32