Why do YAML indentation errors happen?
YAML requires spaces (never tabs) and strict hierarchy alignment. The validator flags exact mismatch locations.
How to Use YAML Validator & Formatter
Step 1: Paste YAML
Paste your YAML configuration, Docker Compose, or K8s file.
Step 2: Validate Syntax
The JS-YAML engine parses scalar values, maps, and sequence lists.
Step 3: Inspect or Convert
View valid confirmation or convert to formatted JSON with one click.
Key Features & Capabilities
- Instant syntax error pointing with line numbers and character positions
- Seamless YAML-to-JSON and JSON-to-YAML converter
- Perfect for CI/CD, Kubernetes, and GitHub Actions workflow testing
Specifications & Limits
- Supported Formats: .yaml, .yml, .txt
- Max File Size: 10 MB
- Batch Processing: Single Item
- Free Tier Limit: Unlimited YAML documents
Frequently Asked Questions
Can I convert YAML directly to JSON?
Yes, you can validate and convert YAML configuration blocks directly to JSON with 1 click.
Related Tools
- JSON Formatter & Validator — Beautify, minify, validate, and repair JSON data with syntax highlighting.
- XML Validator & Formatter — Validate XML syntax, format tags, and detect unclosed or mismatched elements.
- JSON to CSV Converter — Convert JSON arrays and nested objects into clean, exportable CSV spreadsheets.