Convert JSON into clean, readable YAML, right in your browser. Nothing is uploaded.
JSON and YAML describe the same kind of structured data, but they read very differently. JSON leans on braces, brackets, and quotes, which machines love and configuration authors find noisy, while YAML uses indentation and plain keys to express the same structure in a way that is far easier to scan and edit by hand. This tool converts a block of JSON into clean YAML, which is why so many config files, CI pipelines, and Kubernetes manifests prefer the YAML form.
Paste your JSON and the tool produces the equivalent YAML, translating objects into indented key groups and arrays into dash-prefixed lists. Nesting that JSON shows with layers of brackets becomes nested indentation instead, and the strings that had to be quoted in JSON usually shed their quotes where YAML does not need them. You can copy the result straight into a config file or a pipeline definition.
The two formats carry the same data, so nothing is lost in the move, but YAML has a few sensitivities worth respecting. Indentation is meaningful rather than cosmetic, so the tool keeps it consistent, and certain values such as the words yes, no, on, and off, or strings that look like numbers, can take on special meaning in YAML and get quoted to stay literal. The output aims to be both valid and comfortable to read.
Use this rather than rewriting a config by hand when you already have the data as JSON, which is common when an API or a tool emits JSON but the file you maintain is YAML. It is faster and less error-prone than manually converting indentation, where a single misaligned space can break the file.
It comes in handy when you are moving an API response into a YAML config, translating a JSON settings blob into a docker-compose or CI file, learning how a structure looks in the more readable format, and standardizing mixed config files onto YAML across a project. Anyone working with modern DevOps tooling runs into this constantly.
The conversion runs entirely in your browser, so your JSON is never uploaded, there is no sign-up, and it is free to use. Since the work is local, the only real limit is your device's memory, which handles the size of ordinary config and API data with ease.
YAML treats bare words like yes, no, true, and off, plus strings that look like numbers, as special values, so they are quoted to keep them as literal text. That quoting protects your data from being reinterpreted when the YAML is later parsed.
No, JSON and YAML can represent the same structures, so every key, value, and nesting level carries over. The difference is purely in how the data is written, not in what it contains.
Objects become indented key groups and arrays become lists where each item sits on its own line behind a dash. The bracket depth of your JSON turns into indentation depth in the YAML.
For most plain strings, yes, which is a big part of why YAML reads more cleanly. Quotes are only kept where a value would otherwise be ambiguous or misinterpreted.
Standard JSON cannot hold comments, so there are none to carry into the YAML, and the tool does not invent any. You are free to add YAML comments with the hash symbol yourself afterward.
Freshly converted YAML is valid, but YAML depends on exact indentation, so a stray space or a tab introduced during hand-editing is the usual cause of a break. Re-checking the indentation around your change is the first thing to try.
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