Developer Data Tools
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YAML tool

YAML Formatter & Linter

Clean up YAML indentation, remove trailing whitespace and inspect common configuration formatting problems in the browser.

Tool Workspace

This tool runs in your browser. Developer Data Tools does not save pasted input to a server, but avoid using production secrets, access tokens, private keys or sensitive business data in any online page.

Ready. Processing runs in your browser.

Core Features

  • Normalize tabs to spaces for copied YAML snippets.
  • Remove trailing whitespace that causes noisy config diffs.
  • Inspect indentation-sensitive CI, Kubernetes and application config examples.
  • Keep YAML cleanup local to the browser workspace.

How to Use

  1. Paste a YAML snippet into the input editor.
  2. Click Format to normalize whitespace and indentation characters.
  3. Use Validate as a quick cleanup check before project-specific schema validation.
  4. Run your repository linter or deployment validator for full YAML semantics.

Common Errors

  • Tabs mixed with spaces.
  • List items aligned under the wrong parent key.
  • Boolean-like strings such as yes, no, on and off changing meaning.
  • Secrets pasted into debugging tools instead of local project linters.
JSON to YAML Converter

Convert small config examples between JSON and YAML.

Text Diff Checker

Compare YAML config before and after cleanup.

Why YAML Indentation Breaks CI Config

Debug indentation, tabs, list nesting and schema boundaries.