Diagram Tool

功能豐富的免費圖表工具。在網上創建 UML、ERD 和組織圖。


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.


  • 終身免費
  • 沒有圖表數量限制
  • 沒有圖形數量限制
  • 全方位繪圖工具:ERD工具、UML工具、組織結構圖工具、平面圖工具、ITIL,商業概念圖
  • 無縫升級至付費版本以獲取更多更強大的圖表類型和功能
  • 全面兼容各款瀏覽器,並適用於所有作業系統 - Mac, Windows, Linux
  • 拖拽式操作,無需學習和培訓就能輕鬆繪製出專業的圖表。
  • 多種多樣的格式選項(形狀和線條,純色和漸變色),40多種連接器類型,RTF標題,字體選項,陰影效果等
  • 建立您自己的形狀庫,用您自己的形狀創建圖表。
  • 輕鬆添加文字,筆記,外部圖像,網頁鏈接到圖表
  • 兼容多種文件格式,一鍵導出 PNG,JPG,SVG,GIF,PDF,方便您與他人進行分享
  • 數百個圖例和模板,讓您輕鬆創建出各種專業圖表
  • 將圖表儲存至 Google 雲端硬盤,方便安全又高效
  • Visio 圖表和模板導入


只需瀏覽下面的圖表示例,點擊開啟圖表打開編輯器,您將親眼印證我們所說的一切 。