Best 10 Free Online Diagram Makers

There are many ways you can create diagrams. Even the most basic tools like Office and Google Workspace let you create simple ones. However, there comes a time when you need something more than simple, something that can help you express your thoughts better and more creatively.

This is especially true with passion projects, schoolwork, or important work presentations. Diagrams, after all, are used for presenting information or mapping out ideas.

If you want to level up your diagramming skills, this article will provide you with the 10 best free online diagram makers.

Best 10 Free Online Diagram Makers

Are you ready to learn about the top free online diagram makers? Open another tab or window to view these tools immediately.

Additionally, try them out for practical experience. Still, to give you an overview of each tool, here’s a table you can look at and return to as you read this section.

Draw.io: Free and Open-Source Diagramming Platform

Draw.io, also known as diagrams.net., is an open-source platform. It’s a straightforward and flexible tool. When you access the website, you’ll be led straight to the diagram maker without hassle.

Key Features

• Online drive compatibility (Google Drive, Dropbox, OneDrive)
• Custom shape libraries
• SVG, PNG, XML, HTML, and PDF export formats

Rating

• G2: 4.4/5
• Capterra: 4.6/5

Tech Review

Because it's free and has excellent collaboration capabilities supported through Google, Draw.io is a great diagramming app to choose if you only occasionally need to make diagrams. – Jill Duffy, PCMag.

Edraw.AI: AI-Powered Diagramming Platform

Edraw.AI is an up-and-coming tool that’s built with artificial intelligence. As a diagramming tool, it offers a comprehensive toolbox. You can create various diagram types quickly with its templates and AI generation feature. With its AI tools, creating professional and creative diagrams is easy.

Key Features

• AI-generated diagrams (mind maps, SWOT, org charts, etc.)
• Supports over 210 diagram types with comprehensive editing tools
• Diverse AI tools (OCR, copywriting, etc.)

Rating

• Product Hunt: 4.9/5

User Review

Creating visual proposals for clients is now effortless with Edraw.AI’s design templates. They add a professional touch, and clients appreciate the clarity. My win rate has noticeably increased thanks to the visual impact. – Ram, Product Hunt

Canva: Beginner-Friendly Design and Diagramming Tool

Canva is a popular online graphic design platform that can create any diagram you may think of. While it’s primarily a graphic design tool, it does a great job of making creative diagrams. That’s why it’s considered one of the best free online diagram makers.

Key Features

• Vast template library for creative diagram templates
• Many user-uploaded and pre-built design elements
• Drag-and-drop functionality

Rating

• G2: 4.7/5
• Capterra: 4.7/5

Tech Review

While it isn’t as comprehensive a flowchart and illustration tool as some competing offerings, it can handle basic designs. As the tool is free aside from a few advanced features, this makes it a top choice for flowchart design. – Christian Cawley, TechRadar.

Lucidchart: Collaborative Diagramming Tool for Teams

Lucidchart offers a collaborative environment where teams or friends can work together among different diagram types. Moreover, it easily integrates with various business suites like Google, Office, and Slack.

Key Features

• Real-time collaboration tools (comments, version control, etc.)
• Pre-designed templates for different diagram types
• On-the-cloud storage

Ratings

• G2: 4.5/5
• Capterra: 4.5/5

Tech Review

Lucidchart’s clear interface is one of its greatest strengths. Its tools are easy to find and use, which makes it a practical choice for a diagramming app for anyone who needs to create a diagram or flowchart quickly and efficiently, no matter their artistic skill. – Pranay Parab, PCMag.

SmartDraw: Comprehensive Diagramming and Charting Software

SmartDraw primarily brands itself as a tool that offers everything you need in visuals. It’s easy to create flowcharts, mind maps, and even floor plans within SmartDraw. What’s more, it offers whiteboarding and genuinely a "unified visual collaboration" app.

Key Features

• All-in-one visual collaboration app (diagramming, whiteboarding, and data management)
• Real-time collaboration features for teams
• Built-in basic CAD tools

Ratings

• G2: 4.6/5
• Capterra: 4.15/5

Tech Review

SmartDraw is a great tool to help you organize and represent concepts visually. Along with flowcharts and mind maps, it sets itself apart from similar programs with a vast number of high-quality industry-specific templates. – Christian Cawley, TechRadar.

Venngage: Design-Focused Tool for Infographics and Diagrams

Venngage is a tool that specializes in using diagrams for infographics, presentations, and more. Giving users a drag-and-drop experience is another great way to visualize information or data. The free plan is limited, but it can be a good starting point for visual presentation with its already impressive features.

Key Features

• Categorized templates for infographics, brochures, and more
• Support for creating a customized brand kit

Ratings

• G2: 4.7/5
• Capterra: 4.6/5

Tech Review

They say a picture is worth 1,000 words. It’s true. And with Venngage, you can create that picture in half the time it would take you to write 1,000 words. – Kathryn Aragon.

Miro: Collaborative Whiteboard and Diagramming Tool

Another entry to our best free online diagram makers is Miro, which offers team collaboration and comprehensive diagramming tools. It’s essentially a "virtual workspace" where users can create projects together. It’s like your new HQ, as almost everything you need for collaboration is here.

Key Features

• Real-time editing, named cursors, and voting features
• Pre-built diagram templates
• Cross-platform support (web, desktop, mobile)

Ratings

• G2: 4.7/5
• Capterra: 4.7/5

Tech Review

Miro blends aspects of several different categories of software into one. It’s part diagramming, flowchart software, and part presentation app—you could throw mind mapping and video conferencing in there, too. Everything about it is collaborative. – Jill Duffy & Gabriela Vatu, PCMag.

Figma: Cloud-Based UI Design and Diagramming Platform

A cloud-based design and collaboration tool, Figma is mainly known as a tool for UI and UX design.

While it primarily offers prototyping and brainstorming, its technical features make its diagramming tools more dynamic. Teams can enjoy diagramming on another level using its real-time collaboration features.

Key Features

• Reusable and custom design systems
• Version history for collaboration
• Integrates with FigJam for whiteboarding

Rating

• G2: 4.7/5
• Capterra: 4.7/5

Tech Review

My 30 days of trialing Figma was worth my time. I now use Figma for all my projects, without subscribing to third-party apps for my design process. – Philippe Hong via Medium.

Visual Paradigm: Professional Tool for Advanced Diagramming Needs

Visual Paradigm can handle all sorts of diagrams, from simple flowcharts to complex technical ones like ER diagrams, BPMN, and UML.

It’s a favorite among businesses and schools because it has many cool features, an easy-to-use interface, and lets you work with others in real-time.

Key Features

• Supports various diagrams like flowcharts, mind maps, ER diagrams
• Real-time editing and sharing options

Ratings

• G2: 4.3/5
• Capterra: 4.3/5

EdrawMax: Cross-Platform Diagramming Tool for Collaboration and Design

EdrawMax is one of the most popular free and online diagramming tools. Like Edraw.AI, it offers over 210 diagram types with comprehensive AI assistance tools.

With cross-platform compatibility, EdrawMax makes working with your diagrams on the go and in the office easier than ever.

Key Features

• Templates community with over 30,000 user-made templates
• Cross-app compatibility (Visio, SVG, CAD, PDF, Word, etc.)

Ratings

• G2: 4.3/5
• Capterra: 4.5/5

Tech Review

EdrawMax is a powerful, fully-featured drawing app that has all the features, templates, and guides for you to accomplish any task in mind. – Christian Cawley, TechRadar.

Which One Is Right for You?

Picking the perfect diagramming software can make a big difference in how your team works together and gets things done. There are many choices for the best online diagram makers, but it can take time to know where to start. Here are five essential things to remember when looking for the right tool for your team.

Collaboration features.

When working with a team, it’s great to have collaboration features to avoid sending files back to each other whenever something new occurs.

AI-generated diagrams.

When crunched for time, it’s great to rely on AI generation. Also, it’s essential to have comprehensive customization features paired with this.

Various export support.

It’s essential for presenting your outcomes. At the least, a tool should be able to export your diagrams as PDFs or Images.

Straightforward interface.

It’s important to have a straightforward interface for diagrams. Tools that take many steps to access diagramming can be a pain in the long run.

Start Diagramming Today

After going through the 10 best free online diagram makers, have you decided which one you’ll use yet? No matter what you choose, remember that diagramming is a personal process, so make sure to select a tool that fits your needs just right.

Many tools here offer free trials, such as Edraw.AI, EdrawMax, Canva, and Lucidchart. Try them out, watch tutorial videos, experiment with different templates, and apply them to real-life projects. It’s always a great day to start diagramming!