JSON ↔ YAML Converter
Convert JSON to YAML and YAML to JSON instantly. Perfect for Kubernetes, Docker Compose, GitHub Actions, and API specs — 100% browser-based.
Why Convert Between JSON and YAML?
JSON and YAML are both popular data formats, but they serve different purposes. JSON is compact and widely used in APIs, databases, and JavaScript applications. YAML is more human-readable and has become the standard for configuration files in DevOps — Kubernetes manifests, Docker Compose, GitHub Actions, Ansible playbooks, and OpenAPI specs all use YAML.
Developers often need to translate between the two: convert a JSON API response into a YAML config, or take a YAML file and convert it to JSON for a programmatic consumer. This converter handles both directions instantly, entirely in your browser.
Common Use Cases
Kubernetes & Docker — Convert JSON configs into YAML manifests for deployments, services, and ConfigMaps.
CI/CD Pipelines — GitHub Actions, GitLab CI, and CircleCI all use YAML. Quickly convert sample JSON workflows into the correct YAML format.
OpenAPI / Swagger — API specs are often written in YAML for readability. Convert existing JSON Swagger docs to YAML, or vice versa.
Ansible & Configuration Management — Convert structured JSON data into YAML playbook variables.
Features
- Two-way conversion — JSON → YAML and YAML → JSON, instantly.
- Type preservation — Numbers, booleans, arrays, and null values are correctly preserved.
- Live validation — Invalid input triggers a clear error message.
- Copy & download — One-click copy or download as
.yamlor.json. - 100% client-side — Nothing is ever uploaded. Your data stays private.
Frequently Asked Questions
How do I convert JSON to YAML?
Paste your JSON into the input box on the left. The tool instantly converts it to YAML on the right. Copy or download the result — no signup, no uploads.
Why use YAML instead of JSON?
YAML is easier to read and write for configuration files. It supports comments, multi-line strings, and is the standard for Kubernetes manifests, Docker Compose, GitHub Actions, and OpenAPI specs.
Is my data safe?
Yes. All conversion runs 100% in your browser. Nothing is uploaded anywhere.
Does the tool preserve data types?
Yes. Numbers, booleans, arrays, objects, and null values are correctly preserved in both directions.