Converter Tools
Data Format Conversion Guide
A practical guide to converting between JSON, YAML, XML, CSV, and TOML.
Modern development involves multiple data formats. APIs return JSON, configs use YAML/TOML, spreadsheets use CSV, and enterprise systems use XML.
Format Comparison
- JSON: Universal, no comments, used by APIs
- YAML: Human-friendly, comments, DevOps configs
- XML: Verbose, attributes, enterprise systems
- CSV: Tabular, spreadsheets, data import/export
- TOML: Minimal config, Rust/Python/Go
Common Conversions
JSON↔YAML: Every JSON is valid YAML. YAML→JSON loses comments.
JSON↔CSV: Works for flat arrays. Nested data needs flattening.
XML→JSON: Modernizing legacy systems for REST APIs.
Conversion Pitfalls
Not all conversions are lossless. JSON→CSV loses nesting. YAML→JSON loses comments. Always verify output.
Frequently Asked Questions
Can I convert any JSON to CSV?
Flat arrays convert easily. Nested objects require flattening — no universal standard for nested data in CSV.
Is JSON→YAML lossless?
Yes, every JSON is valid YAML. But YAML→JSON loses comments and anchors.
Best format for config files?
YAML for DevOps (Docker, K8s). TOML for apps (Python, Rust). Both are excellent choices.