FlowViz.app
Free, local-first Mermaid diagram editor with live preview and visual flowchart editing.
Free, local-first Mermaid diagram editor with live preview and visual flowchart editing.
This page is designed to help you find out whether FlowViz.app is good and if it is the right choice for you.
FlowViz is a free Mermaid diagram editor that runs in your browser. Write Mermaid syntax and see the diagram render as you type, or edit flowcharts directly on the canvas. Change a node's label, shape or colour, and the Mermaid source updates to match.
It supports every Mermaid v11 diagram type: flowcharts, sequence, class, state, ER, Gantt, mindmaps, timelines, C4, architecture, kanban and more (21 in total). Export as SVG or PNG, pick one of ten themes, or share a link that carries the whole diagram in the URL.
There's no account and no paywall. Diagrams are saved in your browser's local storage and are uploaded only if you choose to create a short link.
Listed in
Live Preview
Diagrams render as you type, for all 21 Mermaid v11 diagram types.
Two-Way Flowchart Editing
Change a node's label, shape or colour on the canvas, and the Mermaid source updates.
SVG and PNG Export
Download any diagram as an SVG or PNG image.
Share Links
The link carries the whole diagram. Optional short links expire after three months.
No Account Required
Free, with no signup or paywall. Diagrams are saved in your browser.
Ten Themes
Light and dark Mermaid themes.
Fix It (Syntax Repair)
Repairs common Mermaid syntax errors, shows what changed, and can be undone.
Mermaid Live Import
Paste a Mermaid Live link to open the diagram.
Developers, technical writers and students who write Mermaid, and people who get Mermaid code from an AI assistant and want to see, edit and export the diagram.
Two-way editing for flowcharts. You can change a node's label, shape or colour on the canvas, and FlowViz patches your Mermaid text instead of regenerating it, so your comments, formatting and statement order survive. It also supports all 21 Mermaid v11 diagram types and needs no account.
It's free, with no signup or paywall, and your diagrams stay in your browser unless you create a short link. The output is plain Mermaid, which works in GitHub, Notion and many docs tools, and flowcharts can also be edited visually on the canvas.
I kept pasting Mermaid from AI chat apps into editors that either wanted an account or couldn't edit the diagram visually. So I built one that does both, free and in the browser.
Nuxt 3, Vue 3, TypeScript, CodeMirror 6, Mermaid 11 and Tailwind CSS, hosted on Vercel.
We have collected here some useful links to help you find out if FlowViz.app is good.
Check the traffic stats of FlowViz.app on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of FlowViz.app on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of FlowViz.app's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of FlowViz.app on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
The latest comments about FlowViz.app on Reddit. This can help you find out how popualr the product is and what people think about it.
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Is FlowViz.app good? This is an informative page that will help you find out. Moreover, you can review and discuss FlowViz.app here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.
