Diagram Tool

功能丰富的免费图表工具。在网上创建 UML、ERD 和组织图。


Visual Paradigm Online is a state-of-the-art online drawing software that creates professional designs for use in system and business design. It has a free Free Edition that supports non-commercial uses, which is extremely good for people who want to learn UML and ERD, which are two major diagrams it support. Besides UML, the free online diagram software also supports ERD, Organization Chart, Floor Plan and more. It comes in handy when you already have Visio drawing developed as it enables you to import Visio drawing and carry on editing. Best of all, the free edition can run on different platforms and lets you create unlimited number of drawing and shapes.


Create fantastic drawings with powerful and intuitive tools


The free online drawing tool is truly free for personal use:

  • No ad
  • No limited number of diagrams and shapes
  • No limited period of access

Just create as many drawings as you like. Output your work into PNG/JPG/GIF/SVG/PDF. Simply free!


For self-learning, doing homework and all sorts of personal uses. For Free!

  • Create unlimited number of diagrams and shapes
  • Won't expired
  • Produce JPG, PNG and other image formats

Massive Diagram Types

Create as many UML diagrams, ERD, Organization Chart, Floor Plan, Business Concept Map, ITIL Diagrams as you like. Enjoy advanced diagrams like Flowchart, BPMN, ArchiMate, DFD, Network Diagram, AWS by upgrading to a paid edition in low cost.


  • 终身免费
  • 没有图表数量限制
  • 没有图形数量限制
  • 全方位绘图工具:UML工具、ERD工具、组织结构图工具、平面图工具、ITIL,商业概念图
  • 无缝升级至付费版本以获取更多更强大的图表类型和功能
  • 全面兼容各款浏览器,并适用于所有作业系统 - Mac, Windows, Linux
  • 拖拽式操作,无需学习和培训就能轻松绘制出专业的图表
  • 多种多样的格式选项(形状和线条,纯色和渐变色),40多种连接器类型,RTF标题,字体选项,阴影效果等
  • 建立您自己的形状库,用您自己的形状创建图表。
  • 轻松添加文字,笔记,外部图像,网页链接到图表
  • 兼容多种文件格式,一键导出 PNG,JPG,SVG,GIF,PDF,方便您与他人进行分享
  • 数百个图例和模板,让您轻松创建出各种专业图表
  • 将图表储存至 Google 云端硬盘,方便安全又高效
  • Visio 图表和模板导入


只需浏览下面的图表示例,点击开启图表打开编辑器,您将亲眼印证我们所说的一切 。