01Source
A clean bridge between data formats
Move between YAML and JSON.
Keep the data yours.
Convert, format, and validate one YAML or JSON document in your browser. Useful output, useful errors, no upload queue.
✦Local parsing{}YAML 1.2⇄Two-way conversion
THE DATA WORKSPACE
Paste source. Choose a direction. Convert.
Local by designYour data never leaves this tab.
02Output
WHY THIS TOOL
A small converter with developer-grade boundaries.
YAML 1.2 behavior
Values such as NO remain strings instead of becoming surprising booleans from older YAML rules.
Useful formatting
Take readable two- or four-space output, or minify JSON when compact data is the goal.
Errors stay close
Invalid source returns a focused message and a line or column when the parser can identify it.
QUICK ANSWERS
Convert the format, not the privacy boundary.
Is my YAML or JSON uploaded?
No. Parsing, formatting, copying, and downloading happen in this browser tab.
Which YAML version is used?
The converter uses YAML 1.2 behavior and accepts one YAML document at a time.
Can this also format JSON?
Yes. Convert YAML to two-space, four-space, or minified JSON, and validate JSON before turning it into YAML.
THE TOOLKIT
More one-minute tools, same boundary.
LocalConvert is growing beyond images into focused one-minute tools for developers, creators, and small teams.