Convert YAML to Markdown
Convert YAML to Markdown in your browser: load your YAML, choose Markdown as the target, and download the result. The converter reports exactly what it could not carry across, and nothing is uploaded to a server.
Convert YAML to MarkdownRuns in your browser. Nothing uploaded.
When you need this
Turning configuration or fixture data into a table for documentation, a runbook, or a design doc — the cases where the point is that a person reads it and a machine does not.
How to convert YAML to Markdown
- Load your YAML
- Drag the .yaml or .yml file in from the repository you are working in. Indentation is preserved exactly as written, so a paste from a terminal works too. Nothing leaves your browser at this or any later step.
- Choose the target format
- Press Ctrl+Shift+K (Cmd+Shift+K on a Mac) to open the conversion panel, then pick Markdown as the target. The source and the result sit side by side.
- Read the loss report
- The panel shows whether the conversion is lossless for your particular data, and lists every value it had to transform. Adjust indentation, key sorting and null handling if you need to.
- Take the Markdown
- Download the .md file, copy it, or open it as a new tab to keep working on it in the Markdown views.
What survives the conversion
YAML to Markdown cannot be lossless, because the two formats express different things. Produces a table for a sequence of flat mappings.
- A sequence of flat mappings becomes a table. Other shapes become a fenced code block instead of a misleading one-column table.
- Comments are lost, which matters more here than elsewhere: a YAML comment is often the explanation you wanted in the document, and it has to be re-added by hand.
- Pipes inside values are escaped so a cell cannot break the table.
A worked example
Fixture data as a documentation table:
- name: timeout
default: 30s
- name: retries
default: 3| name | default |
| --- | --- |
| timeout | 30s |
| retries | 3 |Privacy
The conversion runs in your browser — in a Web Worker for anything above a quarter of a megabyte, so the page stays responsive. Your data is not uploaded, not logged and not stored. There is no account, and the whole thing works offline.
Questions
Are my YAML comments carried into the Markdown?
No. Comments are not part of the parsed data, so nothing downstream of the parser can see them. This is the one conversion where that regularly loses something you wanted, because a comment explaining a default is exactly the prose a document needs — copy it across by hand.
Is converting YAML to Markdown lossless?
No, and no tool can make it so. Produces a table for a sequence of flat mappings. The converter lists every affected value rather than silently dropping it.
Is my YAML uploaded to a server?
No. The file is read and converted by your browser. Nothing about its contents is sent anywhere, which you can verify in your browser’s network panel or by using the tool with the network disconnected.