THE FEUTEX TOOLKIT

YAML Formatter and VS Code Settings Builder

YAML whitespace cleanup VS Code settings generator. Uses the bundled YAML parser to preserve parsed values. Formatting does not preserve comments or original scalar style. Script/settings generation remains available where provided.

Scope of this tool: Uses the bundled YAML parser to preserve parsed values. Formatting does not preserve comments or original scalar style. Script/settings generation remains available where provided.

Parser-backed YAML formatting preserves parsed values, not comments or original scalar style. Legacy tab-rewriting/compact options do not rewrite YAML values.

Indent size VS Code YAML formatter (for snippet)

Convert tabs to spaces Trim trailing whitespace Add YAML doc start (---) if missing Ensure final newline

YAML input

Output

Privacy: runs locally in your browser. No network requests.

Related tools

Quartz Cron Formatter JWT Checker XML Checker for DayZ Online Hash Generator Online UUID Generator v5

Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Use it in two ways: format YAML text, or generate VS Code formatter settings.

Paste your YAML into the input.
Select indentation (2 or 4 spaces) and toggles (tabs, trim, ---).
Click Format YAML to normalize indentation.
Or pick a formatter and click Generate VS Code settings to get a settings.json snippet.
Click Copy Output to copy the result.

FAQ

Which VS Code extension should I use to format YAML?

Prettier is a common choice for consistent formatting across file types; Red Hat YAML is great for YAML support and schema validation. This page can generate a settings.json snippet for either.

Why does YAML formatting fail in VS Code?

Usually there’s no default formatter set for [yaml], or another extension is taking precedence. Set [yaml].editor.defaultFormatter and enable format on save.

Does this tool fully parse YAML?

No. It’s a fast indentation normalizer that keeps your line content and re-maps indentation levels; complex YAML edge cases may require a real formatter in VS Code.

Will it convert tabs to spaces?

Yes. Enable “Convert tabs to spaces” to replace tabs with your selected indent size, which helps avoid YAML indentation issues.

Can it add the YAML document start marker (---)?

Yes. Enable the option to insert --- if the first non-empty, non-comment line isn’t already --- or ....

Does it change key order or rewrite values?

No. It only adjusts indentation and whitespace (plus optional ---), so it won’t sort keys or change scalars.

Is my YAML sent to a server?

No. The formatter runs entirely in your browser and does not make network requests.

Continue your workflow

Browse related tools by task. Use the improved core tools for a consistent workspace with file import, downloads and clear validation errors.