Convert Mermaid to Markdown.
Drop an .mmd or .mermaid file and get a fenced mermaid block that draws as a live diagram wherever Mermaid is supported. It runs entirely in your browser, so your file never leaves your device.
Drag & drop your files
or
Optimize for AI & RAG
Extra cleanup for LLM ingestion: strip HTML, fix smart quotes, tidy Unicode and spacing.
Add YAML front matter
Prepend a metadata block (title, source, date, word & token counts) for knowledge bases and RAG.
Add table of contents
Build a linked index from the headings. Handy for long documents.
Export RAG chunks (.json)
Split the result into retrieval-ready chunks. Download per file from the result panel.
Most converters quietly upload your documents to a server. This one physically can't.
A diagram
that draws itself.
Mermaid describes a flowchart, sequence or class diagram in plain text. Wrap that text in a fenced block tagged mermaid and it stops being a loose file: GitHub, GitLab, Obsidian and the VS Code preview draw it as a real picture.
flowchart TD
A[Start] --> B{OK?}
B -->|yes| C[Done]
B -->|no| A
```mermaid
flowchart TD
A[Start] --> B{OK?}
B -->|yes| C[Done]
B -->|no| A
```
Everything you
actually need.
Mermaid source in, a clean fenced block that renders out, with no server and no account anywhere.
It never leaves your browser
Your .mmd file is read on your own device. Nothing is uploaded to any server, ever.
# Heading
- point one
3 chunks
AI & RAG ready
Optional cleanup, YAML front matter, a table of contents and RAG chunk export.
Works offline
Once the page has loaded you can switch off your connection and it keeps converting.
```mermaid
A --> B
```
Diagram, preserved
The diagram source is kept verbatim and tagged mermaid, so it both renders as a picture and stays readable as plain text.
Unicode safe
Accents, symbols and non-Latin scripts come through intact as UTF-8.
Free, and unlimited
No sign-up, no quotas, no watermarks. Convert one file or a thousand; it all runs the same way, on your own device.
Nothing is
lost.
Honest about what comes through, and what stays put. These are the same notes the Formats list shows for Mermaid, so the page never drifts from what the converter really does.
Kept
2- The full diagram source
- A fenced block tagged mermaid
Preserved
2- Nodes, edges and shape definitions
- Labels, comments and styling directives
A[Start] --> B{OK?}
B -->|yes| C[Done]
style C fill:#2f7d5b
%% review gate
Mermaid questions,
answered.
Everything worth knowing before you drop in a Mermaid diagram file.
Other converters.
Working with more than diagrams? These convert the same way: privately, in your browser.
LDIF to Markdown
.ldif
LDAP directory records.
OpenAPI / Swagger to Markdown
.json · .yaml
REST API specifications.
RAML to Markdown
.raml
RESTful API modeling language.
API Blueprint to Markdown
.apib
API Blueprint specifications.
WSDL to Markdown
.wsdl
SOAP web-service definitions.
WADL to Markdown
.wadl
REST service descriptions.
HTTP requests to Markdown
.http · .rest
Saved HTTP request files.
Avro to Markdown
.avsc
Avro data schemas.