Free Online JSON to YAML Converter
Turn JSON objects, API responses, and config files into clean, properly indented YAML — 100% browser-based with no signup or file upload.
JSON Input
YAML Output
Quick answer
To convert JSON to YAML online, paste or upload your JSON into the KaviForge JSON to YAML Converter, choose your indentation width, and click "Convert to YAML". Copy the clean YAML output or download it as `output.yaml`—all processed locally in your browser.
Converting verbose JSON configuration files or OpenAPI specifications into YAML removes curly braces and quotation clutter, making your files much easier to read, diff in Git, and maintain.
This converter validates your JSON input and serializes it into clean, standard YAML with customizable indentation—completely client-side so your credentials and infrastructure configs stay private.
How to Convert JSON to YAML Online
- 1Paste your JSON into the left editor or click "Upload JSON" to open a `.json` file.
- 2Choose your preferred YAML indentation size (2 spaces is standard for Kubernetes and Docker).
- 3Click "Convert to YAML" to generate clean YAML markup.
- 4Copy the YAML to your clipboard or download `output.yaml`.
Features
Clean Indentation & Formatting
Generates idiomatic block-style YAML with configurable 2, 3, 4, or 5 space indentation.
Safe String Quoting
Automatically quotes strings that look like numbers, booleans, or special YAML characters (like `"10001"` zip codes or ports).
Built-In JSON Validator
Detects trailing commas or syntax errors in your JSON before converting.
Upload .json & Download .yaml
Open `.json` files from disk and export `.yaml` files in one click.
100% Client-Side Privacy
Your configuration data never leaves your browser tab.
When to Use the JSON to YAML Converter
Convert OpenAPI JSON to YAML
Turn auto-generated `swagger.json` or `openapi.json` files into readable YAML specs.
Create Kubernetes & Helm configs
Convert `kubectl get -o json` output or JSON templates into clean YAML manifests.
Migrate app settings to YAML
Move JSON configuration files to YAML for GitHub Actions, Ansible, or Docker Compose.
Why Convert JSON to YAML?
While JSON is ideal for machine-to-machine API payloads, YAML is preferred for configuration files edited by humans because it eliminates brackets, trailing-comma errors, and redundant quotes—and allows inline `#` comments once converted.
Our converter preserves booleans, numbers, nulls, nested arrays, and objects accurately while disabling YAML pointer refs (`noRefs: true`) so your output is self-contained and easy to edit.
JSON to YAML Converter FAQs
How do I convert JSON to YAML online?
Paste your JSON into the left panel on this page and click "Convert to YAML". The formatted YAML appears immediately in the right panel.
What indentation size should I use for Kubernetes or Docker Compose?
2 spaces (the default setting) is the standard convention for Kubernetes manifests, Helm charts, Docker Compose, and GitHub Actions.
Is my JSON data sent to any server?
No. Everything runs locally in your browser.
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