Developer tools / Mermaid
Mermaid
Mermaid is a JavaScript diagramming and charting tool that renders Markdown-inspired text definitions into flowcharts, sequence diagrams, Gantt charts and more.
Where it stands
3.3 / 5
Signals score
Not a hands-on test
Based on 1 of 3 signals
- Website health3.5 / 5 · weight 50%
Measured from the tool's public website
Built only from what we can measure or quote without using the tool. How ranking works
Rank by signals
We have not run our own hands-on test on Mermaid yet. How tests work
Disclosure: agathox makes some of the tools listed here. They are labelled and scored by the same method as every other tool.
Measured signals
3.5 / 5 · measured 2026-11-08Read automatically from Mermaid's public website: how reliable, secure, private and open the site is. This is not a test of how well the tool does its job. How this is measured
- Reliability5 / 5The page answered and finished downloading in 122 ms.
- Security2 / 50 of 5 protective headers set.
- Privacy5 / 5No third-party tracking services found on the page.
- Transparency1 / 5No privacy policy linked; no pricing page linked.
Community feedback
Not enough discussion yet: 6 classified comments from 1 thread. We need at least 12 from 2 threads.
- Positive
“Mermaid is great for simple stuff. If you want a more advanced approach where you can even have multiple levels. The best way to do c4 without paying a dime I think is But again, for simple stuff, mermaid. It's also…”
Read in the thread - Positive
“I love mermaid because it’s so easily source-controlled. It also has pretty solid documentation. I did create an internal tool that scans my Firestore data model and outputs an ER Diagram in mermaid. Works really nicely…”
Read in the thread
Threads: Mermaid: Diagramming and Charting Tool (2024, 65 comments)
Listed, not yet tested
This tool answered when we visited its site on 2026-11-10. The description above is the tool's own. We have not tested it or recorded facts about its limits, pricing or privacy, so it has no score. Are you the maker? Claim this listing to correct details and request a test.
Are you the maker of Mermaid? Link to this page
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<a href="https://agathox.com/tools/mermaid">Mermaid on agathox: compared and tested</a>
Tasks and scores
- Diagram makerNot tested yet
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Top signals in Diagram maker.
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