JSON ↔ YAML Converter
Live conversion between JSON and YAML
Paste JSON, get YAML. Paste YAML, get JSON. Both directions, instant, with proper error messages.
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What is a JSON ↔ YAML Converter?
YAML and JSON are the two universal config formats in modern infrastructure. Kubernetes manifests are YAML; package.json is JSON. GitHub Actions workflows are YAML; Vercel project config is JSON. When you are wiring up the two worlds — converting a CI workflow to a Vercel cron, copying a Helm value into a Terraform variable — you need a fast, reliable converter.
This tool converts in both directions, in real time, entirely in your browser using js-yaml (the same library powering Kubernetes, kubectl, and most Node.js YAML tooling). It preserves nesting, arrays, types (numbers, booleans, null), and quote-style intent.
Errors are surfaced inline with line and column numbers so you can fix malformed input without copy-pasting into another validator.
Why use this JSON ↔ YAML Converter
Built for Indians, by Indians. Every number, every formula, every slab — tuned to FY 2026-27 reality.
Both directions
JSON → YAML or YAML → JSON with one click — swap the input/output instantly.
Live conversion
Output updates as you type — no convert button, no waiting.
Inline error messages
Malformed JSON or YAML shows the exact line and column where the parser choked.
One-click copy
Copy the output to clipboard for paste into your config file.
Swap button
Click swap to feed the output back as the input — useful for round-tripping.
Browser-only
Your config never leaves your machine — runs entirely in JavaScript in your browser.
Using the JSON ↔ YAML Converter in 4 steps
No onboarding, no signup. Answer three fields and the numbers update live.
Pick a direction
JSON → YAML or YAML → JSON. Default is JSON → YAML.
Paste your config
Drop the input into the left pane.
Read the output
The right pane updates live with the converted format.
Copy or swap
Click Copy to grab the output, or Swap to round-trip.
Tips to get the most out of it
YAML is whitespace-sensitive — always validate the converted output by pasting back through the converter to catch indentation issues.
JSON does not preserve comments. If you convert YAML-with-comments to JSON, the comments are dropped. Convert back and you will not get them back.
For Kubernetes manifests, prefer YAML — the surrounding ecosystem (helm, kustomize) is YAML-native. Use JSON only when consuming via APIs.
Numbers in YAML can be misread — e.g. `version: 1.10` is parsed as the number 1.1 in YAML 1.1. Quote version strings to be safe.
Real-world scenarios
How Indians actually use this converter — concrete inputs, concrete outcomes.
GitHub Actions to Vercel Cron
A team migrates a GitHub Actions schedule (YAML) to Vercel's cron config (JSON). Paste the workflow YAML, get the JSON shape, then extract the schedule field for their vercel.json.
Helm values to API payload
Backend team needs to POST a Helm-style values block as JSON to a deployment service's API. They paste values.yaml into the converter and copy the JSON into their curl command.
OpenAPI YAML to JSON
Frontend dev needs the OpenAPI spec in JSON for a code generator. Paste the YAML spec, copy the JSON, feed into openapi-typescript.
Frequently Asked Questions
Still have a question? Our team replies within a business day.
YAML 1.2 (via js-yaml). 1.2 is the modern default — it fixes ambiguities around `yes/no/on/off` being parsed as booleans, which YAML 1.1 had.
Yes — both JSON.stringify and js-yaml.dump preserve the insertion order of object keys.
js-yaml resolves anchors when parsing, so the JSON output will have the resolved values inline. The structure-sharing semantics are lost.
Yes. The converter is format-agnostic — anything that is valid JSON or YAML round-trips.
No — YAML spec disallows tabs for indentation. The parser will error if it encounters one. Replace tabs with spaces before pasting.
Use the Copy button and paste into a file. The converter does not persist your data — close the tab and the input is gone.
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