# YAML to JSON

Canonical URL: https://offlineutils.com/yaml-to-json
Category: Data
Published: 2026-06-30
Publisher: offlineutils.com
Runs entirely in the browser; nothing entered into the tool is uploaded.

> A YAML to JSON converter parses YAML into pretty-printed JSON and serializes JSON back into YAML, reporting syntax errors as you type — entirely in your browser with no upload.

Paste YAML to get formatted JSON, or hit Swap to turn JSON into clean YAML. Parsing uses the js-yaml library, so anchors and aliases, deep nesting, and block scalars resolve correctly, and invalid syntax comes back as a readable error instead of silent bad output. Config files routinely hold secrets, hostnames, and infrastructure details — so every conversion happens locally and nothing is uploaded.

## Features

- YAML to JSON and JSON to YAML
- Resolves anchors, aliases, and block scalars
- Readable parse-error messages
- Live conversion as you type
- Copy the converted output
- Runs entirely in your browser — nothing uploaded

## Use cases

- Inspecting a CI or Kubernetes YAML config as JSON
- Turning a JSON API response into readable YAML
- Checking that a YAML file parses before committing it
- Translating config between YAML-based and JSON-based tooling

## How to use it

1. **Paste input** — Paste YAML (or JSON) into the input pane.
2. **Read the output** — The converted JSON (or YAML) appears live beside it.
3. **Swap or copy** — Use Swap to reverse direction, then copy the result.

## When to use it, and when to use something else

- **vs Online YAML converters** — use YAML to JSON when your config contains secrets or internal hostnames you won't paste into a third-party server. Use Online YAML converters when you need schema validation against a spec, not just conversion.
- **vs yq or a script** — use YAML to JSON when you want an instant UI with error messages on any device. Use yq or a script when you're automating conversions inside a pipeline.

## Frequently asked questions

### How do I convert YAML to JSON?

Paste your YAML into the input pane and the JSON output updates live. Use Swap to reverse the direction and convert JSON to YAML.

### Does it handle anchors and multi-line strings?

Yes. Parsing uses js-yaml, which resolves anchors and aliases and handles block scalars, so real-world config files convert correctly.

### What happens if my YAML is invalid?

The parse error is shown with its message and usually the line, so you can fix the syntax. No partial or misleading output is produced.

### Is my data uploaded?

No. Conversion runs entirely in your browser — which matters because YAML configs so often contain credentials and internal details.

## Related tools

- https://offlineutils.com/json-formatter
- https://offlineutils.com/csv-json
- https://offlineutils.com/json-to-table