ReRender is a lightweight PlantUML Sequence Diagram editor. No backend. No cloud. Write PlantUML-like syntax and see a live-rendered SVG diagram.
ReRender opens directly in your browser for a seamless full-screen experience.
Write PlantUML-like syntax to define your sequence or activity diagrams.
See your diagram rendered as an SVG instantly and export it for your documentation.
Switch between protocols in the same workspace — no separate apps needed.
A complete diagramming workflow in a single tab.
Supports participants, aliases, custom ordering, colors, and complex interaction types like asynchronous and self-messages.
Fine-tune your diagrams with extensive skinparam support for padding, colors, fonts, and box layouts.
Full Creole markup support including bold, italics, underline, monospaced text, and bullet lists.
Easily model business logic with alt/else, par, loop, and partition blocks for complex sequence diagrams.
High-quality SVG output generated directly from your syntax, ensuring diagrams look crisp at any resolution.
Versatile note positioning and shapes, including cloud and hexagon styles, with automatic anchoring.
| Feature | ReRender | Traditional Tools |
|---|---|---|
| Local Storage | ✔ | ✘ |
| No Account Required | ✔ | ✘ |
| SVG Export | ✔ | ✘ |
| Integrated PlantUML | ✔ | Partial |
From a quick draft to complex system documentation.
Draft complex system interactions using intuitive sequence diagrams. Model actors, participants, and lifelines.
Visualize business logic, conditions, and parallel process flows with versatile activity diagram support.
Track project milestones and infrastructure upgrades over time with integrated timing diagram support.
Yes. ReRender is an open-source tool designed for developers to visualize their architecture easily.
ReRender natively supports PlantUML sequence, activity, and timing diagram syntax.
Yes. You can import existing PlantUML diagrams as text files directly into the editor for instant visualization.
ReRender supports extensive skinparam customization to control colors, padding, fonts, and box styles within your diagram syntax.
Yes. Diagrams are rendered as high-quality SVGs that you can save or embed in your documentation and presentations.
Yes. ReRender runs entirely in your browser using local Flutter and SVG rendering, ensuring you can work on diagrams without needing a connection.