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Diagram-JS vs Processing.js

Professional comparison and analysis to help you choose the right software solution for your needs.

Diagram-JS icon
Diagram-JS
Processing.js icon
Processing.js

Diagram-JS vs Processing.js: The Verdict

⚡ Summary:

Diagram-JS: Diagram-JS is an open-source JavaScript diagramming library that allows you to create flowcharts, network diagrams, BPMN diagrams, ER diagrams, UML diagrams, and more. It provides a customizable canvas and diagramming components for building interactive diagrams.

Processing.js: Processing.js is a JavaScript port of the Processing visualization programming language and environment. It allows web browsers to display animations, visualizations, and interactions using the Processing syntax.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Diagram-JS Processing.js
Sugggest Score — —
Category Development Development
Pricing Open Source Open Source

Product Overview

Diagram-JS
Diagram-JS

Description: Diagram-JS is an open-source JavaScript diagramming library that allows you to create flowcharts, network diagrams, BPMN diagrams, ER diagrams, UML diagrams, and more. It provides a customizable canvas and diagramming components for building interactive diagrams.

Type: software

Pricing: Open Source

Processing.js
Processing.js

Description: Processing.js is a JavaScript port of the Processing visualization programming language and environment. It allows web browsers to display animations, visualizations, and interactions using the Processing syntax.

Type: software

Pricing: Open Source

Key Features Comparison

Diagram-JS
Diagram-JS Features
  • Canvas component for rendering diagrams
  • Extensible through custom shapes and plugins
  • Supports BPMN, flowcharts, ER diagrams, UML diagrams
  • Drag and drop diagramming
  • Connectors, ports, docking
  • Undo/redo, copy/paste, delete
  • Keyboard shortcuts
  • Zooming and panning
  • Cross-browser support
Processing.js
Processing.js Features
  • JavaScript port of Processing
  • Runs Processing sketches in web browsers
  • Supports 2D and 3D graphics
  • Has a full set of graphical functions
  • Integrates with HTML5 Canvas and WebGL

Pros & Cons Analysis

Diagram-JS
Diagram-JS
Pros
  • Open source and free
  • Active community support
  • Customizable and extensible
  • Good documentation
  • Supports multiple diagram types
  • Interactive and easy to use
Cons
  • Steep learning curve
  • Limited built-in shape libraries
  • Not a complete diagramming solution out of the box
  • Requires coding skills to customize extensively
Processing.js
Processing.js
Pros
  • Easy to learn
  • Large community support
  • Open source
  • Cross-platform compatibility
  • Interactive visualizations and animations
Cons
  • Performance limitations compared to native Processing
  • Browser support inconsistencies
  • Steep learning curve for non-programmers

Pricing Comparison

Diagram-JS
Diagram-JS
  • Open Source
Processing.js
Processing.js
  • Open Source

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Learn More About Each Product

Diagram-JS
Diagram-JS
Reviews, pricing & alternatives →
Processing.js
Processing.js
Reviews, pricing & alternatives →

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