It’s a pity
Doesn’t work at all
Doesn’t actually work
No support for flow diagrams and I suspect an old mermaid library. Please fix
Works great but you need a trick
Design the diagram in AI like DeepSeek. Copy the code. Open mermaid documents. Press and hold and press paste. Test.txt is created. Press and hold rename to name.mmd. Select use mmd and not text. Open and it works. Use this in your prompt to AI chat: **Mermaid Rules for My Editor**
1. **Types**: Only `flowchart TD/LR`, `erDiagram`, `mindmap`
2. **Syntax**:
- No `#`, `---`, `\n`, emojis, or Unicode
- Labels: `"quoted"` only
3. **Style**:
- Max 2 `classDef` (e.g., `fill:#f9f9f9,stroke:#333`)
4. **File Handling**:
- Paste raw → Save as `.txt` → Rename to `.mmd`
1. **Types**: Only `flowchart TD/LR`, `erDiagram`, `mindmap`
2. **Syntax**:
- No `#`, `---`, `\n`, emojis, or Unicode
- Labels: `"quoted"` only
3. **Style**:
- Max 2 `classDef` (e.g., `fill:#f9f9f9,stroke:#333`)
4. **File Handling**:
- Paste raw → Save as `.txt` → Rename to `.mmd`
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Doesn't work
Tried two diagrams that work elsewhere
didn't work.
likely old mermaid lib. No refund. V lame
didn't work.
likely old mermaid lib. No refund. V lame
Doesn’t open Mermaid files.
The irony of this app being called Mermaid Editor but not actually being able to gracefully open files with the .mermaid extension is laughable.
Trackpad Support Needs Improvement
I can’t scroll with a two-finger swipe on the trackpad, which makes it pretty inconvenient to use.
ペーストできない
ペーストできないアプリなんて使えない
Integration beschraenkt
Kann leider nur .mmd Dateien öffnen und keine .mermaid. Laut Versionsverlauf sollte es auch ein quicklook plugin geben, aber das scheint nicht zu funktionieren.
Entgegen einer anderen Rezension kann man Dateien öffnen und speichern.
Entgegen einer anderen Rezension kann man Dateien öffnen und speichern.
That's a bad program. They're scammers too
This program is very poor. The operators are scammers and dishonest.
Can’t paste text
I can’t imagine a good reason why this ability would not have been added.
Solid Mermaid Editor
I’m building a second brain out of plain text files, and this app expands what I am able to do. I’m excited to plan my projects with GANTT charts, make a timeline of my mom’s career, and create a family tree.
Black on dark gray
Basically, uselesss, text is black on a dark gray background making it almost impossible to see.
Opens .mmd files, and can export PNG or SVG easily
I picked this tool up after getting frustrated with the bad export functionality of the Mermaid live editor. I often need to export my mermaid charts to PNG or SVG.
This tool handles that case very well, and the edior panel is clean and has nice code highlighting. I do with the editor pane had a light/dark mode though, as the white background is brutal on the eyes at night.
This tool handles that case very well, and the edior panel is clean and has nice code highlighting. I do with the editor pane had a light/dark mode though, as the white background is brutal on the eyes at night.
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Useless without a select/copy/paste feature.
No way to get any useful interactions in or out of this without a clipboard.
Basic and useful
This is a basic app that utilizes the Mermaid JS descriptor language. (You can Google "mermaid-js" online for a complete syntax guide; that's what I did.)
By "basic", I mean you can input line-by-line Mermaid JS syntax and it will render the diagram. You can also paste into the syntax editor area. (I tested this, because a one-star reviewer claimed otherwise. I copied-and-pasted a complete diagram into a new document, and it rendered fine. I am on an "M1" iPad Pro. Perhaps that matters?)
Why am I giving it five stars while another gave it one? Because it is literally exactly what I needed. It is a very simple mermaid-js editor and renderer. There are no bells. There are no whistles. I did not need to copypasta from elsewhere, in fact. I only needed to type in my diagram to see it graphically. This app can generate an SVG from the diagram, but I would have been happy if I could have only screen-captured it. So, I'm happy with the app.
I have been working on a difficult problem at work. Visually tying together existing components diagrammatically made life easier because I could determine which existing components to use, and which pieces of code I still needed to write. This app was helpful for me.
By "basic", I mean you can input line-by-line Mermaid JS syntax and it will render the diagram. You can also paste into the syntax editor area. (I tested this, because a one-star reviewer claimed otherwise. I copied-and-pasted a complete diagram into a new document, and it rendered fine. I am on an "M1" iPad Pro. Perhaps that matters?)
Why am I giving it five stars while another gave it one? Because it is literally exactly what I needed. It is a very simple mermaid-js editor and renderer. There are no bells. There are no whistles. I did not need to copypasta from elsewhere, in fact. I only needed to type in my diagram to see it graphically. This app can generate an SVG from the diagram, but I would have been happy if I could have only screen-captured it. So, I'm happy with the app.
I have been working on a difficult problem at work. Visually tying together existing components diagrammatically made life easier because I could determine which existing components to use, and which pieces of code I still needed to write. This app was helpful for me.
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Good app, but cannot open saved files
The app itself is beautiful to work with.
However, you are not able to open a file that you have saved with the app.
This makes the app unusable.
However, you are not able to open a file that you have saved with the app.
This makes the app unusable.
Useless
Cannot paste diagrams, basic function
Decent, but could use some improvements
Basically functions well.
Pros:
- Live editing.
- Double-clicking an .mmd file does open the app, despite the other review.
- pan and zoom of the diagram supported, though panning requires a click-and-hold, which is unatural for typical trackpad behavior on a Mac app (compare to the Maps app).
- Generates diagrams from standard templates.
- Link to the MermaidJS docs.
Cons:
- The cursor is almost invisible in the editor. I'm constantly losing track of it.
- Needs better support for light/dark themes (this may help the cursor issue).
- Large state diagram didn't render, and no errors were displayed.
- Code completion only works for Mermaid key words, not user-defined symbols (compare to the official Live Editor)
Pros:
- Live editing.
- Double-clicking an .mmd file does open the app, despite the other review.
- pan and zoom of the diagram supported, though panning requires a click-and-hold, which is unatural for typical trackpad behavior on a Mac app (compare to the Maps app).
- Generates diagrams from standard templates.
- Link to the MermaidJS docs.
Cons:
- The cursor is almost invisible in the editor. I'm constantly losing track of it.
- Needs better support for light/dark themes (this may help the cursor issue).
- Large state diagram didn't render, and no errors were displayed.
- Code completion only works for Mermaid key words, not user-defined symbols (compare to the official Live Editor)
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Usually fails
In general, not designed to be very usable. Will produce a diagram under the right circumstances, but more typically fails with “Importing module script failed.”
Doesn't Support mmd Files
Despite the first screenshot, the app doesn't actually support opening .mmd files, which really limits its utility.
