Common file extensions developers work with and what each is typically used for. See the Developer Tools guides for related tools and explanations.
| Extension | Typical Use |
|---|---|
| .json | Structured data, configuration files, API responses |
| .xml | Structured, tag-based data, older APIs and configs |
| .csv | Tabular data, spreadsheet exports |
| .html | Web page markup |
| .css | Web page styling |
| .js | JavaScript code |
| .md | Markdown formatted text, common for documentation |
| .yml / .yaml | Configuration files, often for build tools and CI pipelines |
| .log | Application or system log output |
See all Developer Tools for formatting, converting, and validating these file types.
Developer Tools
None. They’re the same format; both extensions are accepted interchangeably, and .yml is simply a shorter, common alias.
No. An extension is just a naming convention. The actual content should still be validated rather than trusted based on the extension alone.
Find the right tool, or browse Brekzy's other resources.