Choose JSON for
- REST and web APIs
- Browser and JavaScript applications
- Strict data exchange
- Compact automated payloads
JSONversusYAML
JSON vs YAML: Which Format Should You Use?
Compare JSON and YAML for APIs, configuration files, CI/CD pipelines and human-readable data before choosing a format.
Quick decision
Choose JSON for APIs, strict machine exchange and broad library support. Choose YAML for human-edited configuration where readability matters.
Feature
JSON
YAML
Primary strength
Predictable machine-readable structure
Readable configuration syntax
Comments
Not supported by the standard
Supported with # comments
Syntax
Braces, brackets and quoted keys
Indentation-based
Common usage
APIs, web apps and data exchange
DevOps and application configuration
Parsing risk
Usually explicit and consistent
Indentation and implicit types require care
Choose YAML for
- Kubernetes manifests
- CI/CD pipelines
- Docker Compose
- Human-maintained configuration
Related tools
Frequently asked questions
What is the main difference between JSON and YAML?
Choose JSON for APIs, strict machine exchange and broad library support. Choose YAML for human-edited configuration where readability matters.
When should I use JSON?
REST and web APIs, Browser and JavaScript applications, Strict data exchange, Compact automated payloads.
When should I use YAML?
Kubernetes manifests, CI/CD pipelines, Docker Compose, Human-maintained configuration.