Online YAML Formatter and Validator
YAML formatting, minification and syntax validation with line and column error detection
Online YAML Formatter, Minifier and Validator
The online YAML formatter organizes and validates YAML configuration files. It can reformat inconsistent indentation into a clear hierarchy or output a compact flow-style representation, with syntax errors located by line and column. It is suitable for Kubernetes, CI/CD and Docker Compose YAML files.
YAML Formatting and Beautification
The tool uses a standard YAML parser to regenerate indentation levels and list structures. It supports 2, 4 and 8 spaces for consistent formatting.
YAML Minification
Nested structures can be output in compact flow style to reduce line count and file size, which can be useful for transmission or embedding in other configuration data.
YAML Syntax Validation and Error Location
The validator detects common syntax problems such as incorrect indentation, unmatched brackets or quotes and missing colons, and reports the relevant line and column. Error locations can be used to select the problematic area in the input.
Common Uses
- Organize Kubernetes and Docker Compose configuration files.
- Check YAML syntax in CI/CD pipelines.
- Compact YAML for transmission or embedding.
- Read and organize complex YAML configuration files.
Privacy and Data Security
YAML parsing, formatting and validation are performed entirely in the browser. Data is not uploaded to the server. Remove sensitive keys and tokens before processing configuration files when appropriate.
What is an online YAML formatter?
- Regenerates YAML using a standard parser with consistent indentation and list formatting
- Supports 2, 4 and 8-space indentation
- Supports compact flow-style output to reduce line count and size
- Detects common indentation, bracket, quote and colon errors
- Reports syntax errors by line and column
- Supports one-click copying and .yaml file download