--- title: Mermaid Reviews meta_title: 'Mermaid Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter reviews by the users' company size, role or industry to find out how Mermaid works for a business like yours. aggregate_rating: rating_value: 4.7 review_count: 9 scale: '5' date_modified: '2026-08-09' parent_category: name: Design url: https://www.g2.com/categories/design --- # Mermaid Reviews **Vendor:** Mermaid **Category:** [Diagramming Software](https://www.g2.com/categories/diagramming) **Average Rating:** 4.7/5.0 **Total Reviews:** 9 ## About Mermaid Mermaid is a diagramming tool built on Mermaid.js, the open-source diagramming library. Diagrams are defined as text in Mermaid syntax, and the rendering engine determines the layout. When a process changes, updating the diagram is a text edit rather than a rebuild — the practical difference from drag-and-drop editors, where repositioning nodes is part of every revision. There are several ways to create a diagram: users can write Mermaid syntax directly, begin from a template, or describe a process in plain language and let Mermaid AI generate the diagram along with its supporting documentation. Every route produces the same text-based diagram, so one that began as an AI generation or a template is edited, versioned, and updated exactly like one written by hand. The editor supports the full range of Mermaid diagram types, including flowcharts, sequence diagrams, class diagrams, entity relationship diagrams, state diagrams, Gantt charts, user journey maps, mindmaps, and timelines. Teams use it for software architecture diagrams, database schemas, API request flows, onboarding and process documentation, and project timelines, where the same syntax covers both quick sketches and diagrams that need to stay accurate over time. Comments, notifications, and real-time collaborative editing keep a team working in a single source file rather than exchanging screenshots. Because diagrams are stored as text, they can be version-controlled alongside code, reviewed in the same workflow as any other file, and kept in sync as the systems they document evolve. Finished diagrams export to standard formats such as PNG and SVG for use elsewhere. Integrations with PowerPoint, Word, Confluence, VS Code, JetBrains IDEs, ChatGPT, and Claude place diagrams in the tools where the work already happens. ## Mermaid Pros & Cons **What users like:** - Users value the **ease of use** of Mermaid Chart, effortlessly creating and updating diagrams with simple text commands. (4 reviews) - Users love the **easy drawing capabilities** of Mermaid Chart, enabling quick, efficient creation of complex diagrams. (2 reviews) - Users value the **efficiency optimization** of Mermaid Chart, enabling faster and clearer diagram creation with minimal rework. (2 reviews) - Users love the **seamless integrations** of Mermaid Chart, enabling easy embedding in documentation and collaboration with various software. (2 reviews) - Users highly value the **simplicity and flexibility** of Mermaid Charts for easily creating and updating diagrams. (2 reviews) - Users love the **seamless cloud integration** of Mermaid Chart, enabling effortless collaboration and efficient documentation updates. (1 reviews) - Collaboration (1 reviews) - Drag (1 reviews) - Ease of Installation (1 reviews) - Flexibility (1 reviews) **What users dislike:** - Users report **software bugs** in Mermaid Chart, particularly affecting debugger functionality and large charts. (2 reviews) - Users find **tool limitations** in Mermaid Chart, facing challenges with readability, performance, and debugging issues. (2 reviews) - Users find **integration difficulty** a challenge, especially with limited collaboration and formatting options affecting usability. (1 reviews) - Users find **learning difficulties** with Mermaid Chart due to complex syntax and limited formatting options affecting usability. (1 reviews) - Users find **limited customization** options in Mermaid Chart, making complex diagrams difficult to style and manage effectively. (1 reviews) - Limited Editing Options (1 reviews) - Limited Features (1 reviews) - Performance Issues (1 reviews) - Slow Performance (1 reviews) ## Mermaid Reviews ### 1. Version-controlled diagrams for APIs, services, and architecture decisions **Rating:** 4.0/5.0 stars **Reviewed by:** Miguel F. | Software Developer, Information Technology and Services, Mid-Market (51-1000 emp.) **Reviewed Date:** July 28, 2026 **What do you like best about Mermaid?** An external integration started causing confusion because we had three different explanations of the same flow. The ticket described one sequence, the documentation still showed an older diagram, and the code already included retry logic that appeared in neither. I opened Mermaid Live Editor, wrote a sequence diagram with our API, the provider, the queue, and the worker, and within a few minutes we were talking about the real behavior instead of spending the meeting dragging connectors around a visual canvas. That’s where Mermaid works best for me. Because the diagram is defined as text, adding another participant, changing the order of a call, or showing an alternative response is usually quicker than editing a traditional diagram. The Live Editor updates the preview as I write, and it lets me share either a view-only link or an editable one so someone else can adjust the diagram and send back a revised version. When the final output needs to look cleaner, we also export SVGs for documentation and presentations. Gantt diagrams are useful for lightweight technical timelines, too. I can show discovery, development, testing, and deployment in the same Markdown file and export the result as SVG, PNG, or a link. I wouldn’t replace a project management tool with it, but it’s enough when the timeline belongs inside a technical proposal or architecture decision rather than a full delivery plan. **What do you dislike about Mermaid?** The automatic layout definitely saves time, but it also means I don’t always have precise control over where each element ends up. In a visual tool, I can nudge a box a few pixels and immediately improve the reading order. With Mermaid, I usually have to adjust the direction, sequence, subgraphs, labels, or configuration, and then accept whatever the renderer produces. **What problems is Mermaid solving and how is that benefiting you?** A payment integration was already underway when we realized the team had different assumptions about what should happen after a duplicate webhook. The documentation showed only a direct call from the provider to our API, but the implementation had already expanded to include a queue, a worker, and an idempotency check that wasn’t applied consistently across every handler. We created a sequence diagram in Mermaid Live Editor showing the client, our API, the provider, the queue, and the database, and then added alt blocks for approved payments, rejected payments, and repeated callbacks. Sharing the editable link during the review made the disagreement obvious almost immediately. It also surfaced that two paths could update the same order before the transaction finished—something that was much harder to spot from the ticket description alone. From there, we moved the validation into a shared point and added a database constraint so the protection didn’t rely only on application logic. We then committed the Mermaid source to the repository, and Mermaid CLI generated the SVG used in the published documentation. Mermaid didn’t find the race condition for us, but it did give backend, frontend, and product a shared model of the flow, kept the explanation reviewable inside the pull request, and removed the need to maintain a separate design file that would eventually drift away from the code. ### 2. Easy and fast **Rating:** 4.0/5.0 stars **Reviewed by:** Lakshay J. | Senior Engineer - Product Engineering, Enterprise (> 1000 emp.) **Reviewed Date:** August 18, 2025 **What do you like best about Mermaid?** You can just write and draw a chart. makes implementation of flowsharts faster... earlier I used to use draw.io which was cumbersome, took time and had to match each arrow with each block.... editing and manking changes in comples flowcharts was time consuming. **What do you dislike about Mermaid?** the debugger doesn't work well. even after trying multiple times I was not able to make it work well. **What problems is Mermaid solving and how is that benefiting you?** 1. faster implementation of flowcharts 2. faster integration of charts with miro and wiki 3. much easy to share them then sharing manual images - [View Mermaid pricing details and edition comparison](https://www.g2.com/products/mermaid/reviews?filters%5Bnps_score%5D%5B%5D=4§ion=pricing&secure%5Bexpires_at%5D=2026-08-13+22%3A38%3A00+-0500&secure%5Bsession_id%5D=b2d92b21-bc2b-4353-a950-137afd2446c8&secure%5Btoken%5D=25c22b7206463679fcc6aa1adce76ddbab2ff4b51192bb5b9d3a4269842db06c&format=llm_user) ## Mermaid Integrations - [ChatGPT](https://www.g2.com/products/chatgpt/reviews) - [Claude Code](https://www.g2.com/products/anthropic-claude-code/reviews) - [Codex](https://www.g2.com/products/openai-codex/reviews) - [Confluence](https://www.g2.com/products/confluence/reviews) - [Cursor](https://www.g2.com/products/cursor/reviews) - [Jira](https://www.g2.com/products/jira/reviews) - [Miro](https://www.g2.com/products/miro/reviews) - [Windsurf](https://www.g2.com/products/exafunction-windsurf/reviews) ## Mermaid Features **Additional Functionality** - AI Copilot - Chat/Messaging - Commenting/Notes - Mind Maps - Collaboration Tools - Network Diagram - Graphical Workflow Editor - API - SSL Security - Workflow Management - Templates - Real-Time Data - Design Management - Task Management - Organizational Charting - Data Import/Export - Version Control - Flowchart - Auto Update - Single Sign On - Project Planning - Customizable Reports - Image Library - Real-Time Updates - Multi-Language - Document Embedding - Document Storage - Freehand Sketch - Access Controls/Permissions - Brainstorming - File Sharing - Wiki - Drag & Drop - Graphical Data Presentation - Communication Management - File Management - Third-Party Integrations - Strategic Planning - Data Visualization - Generative AI - Whiteboard - Gantt/Timeline View - Bottleneck Identification - Process Builder - Team Management - Process Modeling & Designing - Status Tracking - Design Templates - Diagramming - Customizable Templates - Project Management - Video Conferencing - Analytics - Audit Trail - Screen Sharing - Change Management - Document Management - Visual Workflow Management ## Top Mermaid Alternatives - [Draw.io](https://www.g2.com/products/draw-io/reviews) - 4.4/5.0 (444 reviews) - [Miro](https://www.g2.com/products/miro/reviews) - 4.6/5.0 (13,356 reviews) - [Lucid Visual Collaboration Suite](https://www.g2.com/products/lucid-software-inc-lucid-visual-collaboration-suite/reviews) - 4.5/5.0 (8,725 reviews)