YAML formatter

Client

Clean up minified or messy YAML from CI logs and Kubernetes manifests—processing stays in your browser.

About YAML formatter

Format and indent YAML documents in the browser—pairs with JSON ↔ YAML converters for config files. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

name: demo
items:
  - id: 1
    active: true

Nearby workflows on Toolcore

  • YAML ↔ JSON — YAML to JSON and JSON to YAML online—bidirectional converter, format either side in the browser. when the payload needs a different encoding or escape format.
  • YAML ↔ TOML — Convert YAML and TOML config formats bidirectionally in the browser—no JSON intermediate page. when the payload needs a different encoding or escape format.
  • JSON formatter — JSON format online: pretty-print, minify, validate, escape, download . when the payload needs a different encoding or escape format.
  • .env / dotenv editor — Edit KEY=value files—sort, dedupe, issues, JSON preview and import; browser-only. when the payload needs a different encoding or escape format.

Common use cases

  • Pretty-print Helm values before code review.
  • Normalize indentation after manual edits.

Common mistakes to avoid

  • Tabs in YAML

    YAML forbids tab indentation—use spaces only.

FAQ

JSON inside YAML?

Valid YAML that parses will format; invalid documents show an error message.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • yaml formatter online
  • pretty print yaml in browser
  • indent yaml no upload

More tools

Related utilities you can open in another tab—mostly client-side.