What's New

Some people reported weird layout on state diagrams, this should be much improved now.

Sorry about that!

Stories is in early access for Pro users.

Stories are a Markdown notepad for communicating ideas needing multiple diagrams and narrative.

Sometimes a big diagram is overwhelming, so stories help you explain things step by step.

• Create multiple diagrams in the same document
• Surround diagrams with Markdown to form a narrative
• Generate diagrams with AI. For example paste your PRD and get a class diagram back.

Pro users can check it out now, we'll create a playground for FREE users over the coming months.

Enjoy!

Until you get used to them, text-based diagramming tools like yuml have a bit of a learning curve initially.

So we've introduced Fix with AI to help speed things up.

A new "Fix with AI" button appears in the editor alongside any error message you have at the bottom of the editor pane.

You get a few free goes each day on the FREE plan, and fairly liberal use on the Pro plan (250 fixes).

We've just launched S4 diagrams so you can create System Context, Container and Component diagrams. Check them out in the Gallery.

For those of you into product strategy and software, we've published a few new diagram types this week.

Roadmap Diagrams: Like a kanban board. Now/Next/Later. Or Todo/Doing/Done. I like them for quickly communicating priorities and roadmap on Slack.

Timeline Diagrams: A meandering line that can have major or minor milestones on it. Useful for explaining a journey or series of events.

Enjoy!

The docs are up folks

https://yuml.me/docs

A few days ago, we got our first request from long-time user and subscriber (@teh-master). He'd asked for some documentation to help with API POSTs, so they're now up.

If you have any requests or Q&A - please post up on the community area.

Note, there are also lots of examples in the help sider-bar in the editor.

Howdy folks 👋🏼

If you've used yUML for a while, you might know it started out as a 4-day proof of concept back in 2008. After hitting number one on Hacker News, and getting 24,000 new users in just 2 days, it's had a pretty good run.

Even today, we still serve over 150,000 diagrams a day (mostly free), so I'm pretty proud to have created a useful gift to the software community.

Seventeen years later in 2026, I thought it might be time for a bit of a refresh :)

For now, just a few improvements:

• Much faster rendering in the editor
• Much faster rendering on the server side for your CI scripts
• Draw sequence and state diagrams, in edition to existing Class, Use Case and Activity diagrams
• Visualise your UX user journeys with User Journey Maps (needs a bit of work)
• I've retained the old Scruffy and Plain looks, but also added Clean and Napkin (the latter being a bit of fun)
• You also get dark themes with Midnight and Blueprint
• New POST API for CI and scripts

You'll also notice there's a few new subscription plans. Massive thanks to those of you who've subscribed over the years. To make it better for everyone, we're asking people to subscribe to use in their professional CI/Automation pipelines. This will help us fund future developments!

Enjoy yuml v2, and feedback welcome as always.

Tobin