What is a diagram maker?

A diagram maker is an online (or desktop) tool used to create visual diagrams like flowcharts, UML, ER diagrams, network diagrams, mind maps, and block diagrams. Most offer templates, drag-and-drop shapes, connectors, and export to PNG/PDF/SVG.

Which diagram tool is best for flowcharts and process maps?

For fast drag-and-drop flowcharts, try diagrams.net, Lucidchart, Canva, Miro, or Creately. If you want sketch-style visuals, Excalidraw is popular.

What export format is best for diagrams on websites?

For web pages, SVG stays crisp at any size (best for text-heavy diagrams). PNG is also common. WebP typically loads faster than PNG. For printing, use PDF.

What are “diagrams as code” tools?

Diagrams-as-code tools let you create diagrams from text syntax, which is great for documentation and version control. Mermaid and PlantUML are common options.

Diagram Maker – Free Online Diagram Tools & Templates

Build flowcharts, UML, ERD, network diagrams, mind maps, and block diagrams with the tools below. Choose drag-and-drop editors, 템플릿 라이브러리, AI 생성기, 또는 diagrams-as-code.

Flowchart UML / ERD Network Mind map SVG / PNG / PDF

관련된: 순서도 템플릿 · 그래픽 구성 템플릿

Export Your Diagram, Then Optimize for Web

Diagrams often export as heavy PNG/PDF files. Use ImageConver to resize, crop, compress, and convert (PNG ⇄ JPG ⇄ WebP) so pages load fast and text stays readable.

ImageConver 도구 열기

에디터 추천

diagrams.net (draw.io) – Free Diagram Maker

무료 온라인 템플릿

A go-to free diagram editor for flowcharts, UML, ERD, and network diagrams. Great exports (PNG/SVG/PDF).

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Lucidchart – Diagram Maker

온라인 템플릿 기업

Strong template gallery and collaboration for teams building flowcharts, systems, and technical diagrams.

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Canva – Diagram Maker

무료 온라인 템플릿

Quick, polished diagrams with templates—great for classroom visuals, presentations, and web graphics.

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Diagram Maker Directory

Filter by: Free · Online · Templates · AI · Code · Enterprise

diagrams.net (draw.io) – Online Diagram Maker

무료 온라인 템플릿

Free editor for flowcharts, UML, ERD, BPMN, org charts, and more.

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Lucidchart – Diagram Maker

온라인 템플릿 기업

Collaborative diagramming with templates and integrations for teams.

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Canva – Diagram Maker

무료 온라인 템플릿

Design-friendly diagrams for web, slides, and classroom visuals.

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Miro – Diagram Maker (Diagramming)

온라인 템플릿 기업

Whiteboard-style diagramming for teams: from brainstorming to documentation.

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Miro – Diagram Templates Collection

온라인 템플릿

Browse ready-made diagram templates for common workflows and visuals.

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Creately – Diagramming Platform

온라인 템플릿 기업

Visual workspace for diagrams plus collaboration and documentation.

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FigJam – Diagram Tool (Figma)

무료 온라인 템플릿

Great for collaborative workshops, sticky notes, and quick diagrams.

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Visual Paradigm Online – Free Diagram Maker

무료 온라인 템플릿

Online editor with templates and connectors for fast diagramming.

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EdrawMax – AI Diagram Generator

일체 포함 온라인 템플릿

Generate diagrams from text prompts, then refine and export.

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SmartDraw – 블록 다이어그램 작성기

온라인 템플릿 기업

Template-driven diagramming for business and engineering-style visuals.

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Excalidraw – Sketch-Style Diagrams

무료 온라인

Hand-drawn look for quick diagrams, UX flows, and brainstorming.

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Whimsical – Flowchart Maker

온라인 템플릿 일체 포함

Fast flowcharts with a clean interface plus optional AI generation.

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Mermaid Live – Diagrams as Code

무료 온라인 암호

Write Mermaid syntax and export diagrams for docs and wikis.

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PlantText – PlantUML Editor

온라인 암호

Generate UML diagrams from text (class, sequence, activity, state).

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Google Drawings

무료 온라인 인쇄 가능

Simple diagramming inside Google Workspace for quick charts and layouts.

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Microsoft Visio

기업 온라인 인쇄 가능

Popular diagramming option for organizations using Microsoft 365.

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Miro – PlantUML Online Editor

온라인 암호

Create diagrams from PlantUML text and import into Miro boards.

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Mermaid Chart – Online Editor

온라인 암호

Create Mermaid diagrams online with editing and export options.

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Tip: For text-heavy diagrams, prefer SVG 가능한 경우 내보냅니다. 인쇄하려면 다음을 사용하십시오. PDF. 웹사이트의 경우 PNG 변환을 고려하세요 → WebP after export.

Quick Compare: Which Diagram Maker Should You Use?

필요	최선의 선택	왜	팁 내보내기
Free, powerful diagram editor	Diagrams.net	Great for flowcharts/UML/ERD with strong exports	Export SVG for crisp text
팀 협업	Miro / Lucidchart	Co-editing, comments, and team workflows	공유를 위해 PDF 내보내기
Beautiful web graphics	칸바	템플릿 + 디자인 다듬기	PNG 내보내기 → WebP로 변환
AI “text → diagram”	EdrawMax AI / Whimsical AI	Fast drafts from prompts	Review before publishing
Docs + version control	Mermaid / PlantUML	Diagrams as code (easy to diff + update)	Render to SVG for wikis

Popular Diagram Types

Flowchart: visualize steps, decisions, and processes
스윔레인 순서도: show ownership across teams/roles
UML: class, sequence, activity, use case diagrams
ERD: database entities and relationships
Network diagram: infrastructure and connections
Block diagram: high-level system components
Mind map: brainstorming and idea organization

ImageConver로 다이어그램 내보내기 최적화

Export at the size you actually need (avoid huge canvases).
선명한 텍스트를 위해서는 SVG를 선호합니다. 그렇지 않으면 PNG를 내보냅니다.
더 빠른 로딩을 위해 PNG → WebP를 변환합니다(투명도가 필요하지 않은 경우).
게시하기 전에 부드럽게 압축하고 100% 확대/축소하여 미리 보세요.

사용 이미지컨버 내보내기를 신속하게 압축, 변환 및 크기 조정합니다.

Diagram Maker FAQ

SVG vs PNG: which is better for diagrams?

SVG is usually best for diagrams with lots of text because it stays sharp at any size. PNG is more universal when SVG export isn’t available. For print, use PDF.

How do I make a diagram mobile-friendly?

Keep labels short, increase font size, and consider exporting a “mobile crop” (split wide diagrams into sections). If you embed an SVG, ensure it scales responsively.

Can I use these tools commercially?

Many tools allow commercial use but may restrict certain templates or assets. Always check the licensing terms on the source website, especially for template libraries.

목록을 마지막으로 검토한 날짜: 2026년 2월 27일.