YAML ⇄ JSON Converter
Config conversion · Local parsing · Instant preview
YAML Conversion
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ABOUT
About YAML ⇄ JSON Converter
Quickly convert between YAML and JSON for editing K8s manifests, CI configs, and similar scenarios.
Kubernetes, GitHub Actions, Docker Compose—YAML is the cloud-native lingua franca. Local conversion lets you review manifest structure quickly on machines without kubectl or yq.
DEEP DIVE
Learn More About YAML ⇄ JSON Converter
YAML's human readability makes it widely used in Kubernetes, Docker Compose, GitHub Actions, Ansible, and more. But the JavaScript ecosystem natively supports only JSON—debugging YAML configs often starts with JSON conversion. JSONSort converts bidirectionally in the browser without installing yq, Python PyYAML, or other CLI tools.
Conversion preserves hierarchy: YAML indentation maps to JSON nesting; arrays and objects correspond correctly. Ideal for quickly validating K8s manifest structure or importing CI configs into JSON tooling.
YAML 1.1 and 1.2 differ historically on boolean parsing (yes/no). If unexpected booleans or null appear after conversion, check original YAML indentation and quotes; fix manually on the JSON side before converting back to YAML if needed.
FEATURES
Core capabilities
YAML → JSON
Parse YAML text into JSON objects; supports multi-document and anchors.
JSON → YAML
Generate YAML in reverse for writing .yaml config files.
Instant conversion
Paste to convert instantly—no network delay; preview immediately after edits.
Syntax Hints
Parse failure prompts when YAML indentation or syntax is wrong.
File import
Supports drag-and-drop import of .yaml / .yml files.
Local & safe
K8s secrets and internal configs never leave the browser.
Anchors & Aliases
Supports basic &anchor and *alias expansion for DRY configs.
Bidirectional Edit Loop
YAML → JSON edit → JSON → YAML—useful when YAML indentation is unfamiliar.
HOW TO USE
How to use
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1
Paste YAML or JSON
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2
Choose conversion direction
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3
Copy output or export file
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4
On failure, check the error, fix source syntax, and retry
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5
Pretty-print with the formatter or export for downstream scripts
WORKFLOW
Typical workflow
End-to-end workflow from import to export, helping teams standardize YAML ⇄ JSON Converter usage.
Import YAML
Paste or drag .yaml / .yml files; preserve original indentation.
Inspect JSON
Use tree view to confirm apiVersion, kind, and spec hierarchy.
Edit (optional)
Edit on JSON side and convert back to YAML, or copy JSON for downstream tools.
Export
Copy results to Git repos or config management systems.
USE CASES
Use cases
DevOps
Convert K8s Deployment YAML to JSON and inspect structure in tree view.
Backend developers
Convert GitHub Actions workflow YAML to JSON for programmatic processing.
Full-Stack Engineer
Convert docker-compose.yml to JSON for Mock or test frameworks.
Technical writing
Convert YAML examples in docs to JSON for different reader audiences.
Cloud Native Engineer
Convert Helm values.yaml to JSON for internal config management platforms.
CI Maintainer
Convert GitHub Actions workflows to JSON as input for static check scripts.
TIPS
Tips
- After K8s manifest conversion, use the formatter to verify apiVersion/kind hierarchy.
- YAML is indentation-sensitive—preserve original spaces when pasting; don't mix tabs and spaces.
- Complex YAML anchors (& *) can be verified in JSON tree view after conversion.
- JSON → YAML output can be saved directly as .yaml for Ansible playbooks.
- Pair with TOML tool: unify config formats across language ecosystems via JSONSort.
- On conversion failure, check for unclosed quotes or missing space after colons.
- After K8s Secret stringData converts to JSON, base64 fields remain strings.
- For multi-document YAML (--- separated), convert segments separately to avoid mixed structure.
- After JSON → YAML, check list item indentation—some tools are sensitive to - prefixed lines.
- Combine with TOML tool: convert everything to JSON as intermediate format, then cross-convert.
LOCAL VS ONLINE
Local vs online tools
JSONSort stays purely frontend—this comparison shows why local tools fit dev data better.
TROUBLESHOOTING
Common pitfalls & fixes
Issues you may hit in practice and how to handle them—save time on trial and error.
Parse Failed: bad indentation
Tip:Use consistent space indentation, no tabs; check for space after colons.
yes/no Becomes true/false
Tip:YAML 1.1 behavior; quote as "yes" if you need a string.
Key order changes when converting back to YAML
Tip:Key order may match JSON; functionality is unaffected, but Git diff may be larger.
Multiline string format is lost
Tip:| and > block scalars become plain strings in JSON; manual adjustment is needed when converting back.
FAQ
FAQ
Does it support Kubernetes YAML?
Standard YAML syntax is supported. For multi-document manifests separated by ---, convert each document separately.
Does JSON to YAML preserve key order?
Key order from JSON objects is preserved in YAML output whenever possible.
Will Chinese characters become garbled after conversion?
No. UTF-8 encoding is maintained throughout; Chinese comments and strings are preserved correctly.
Are YAML comments preserved during conversion?
Comments are lost when converting YAML → JSON (JSON does not support comments). Keep comments in the source file.
Will large manifests cause lag?
Thousands of lines are usually fine. For very large files, split by resource before converting.
Is data uploaded to a server?
No. All JSONSort tools run locally in your browser—your input is never sent to any backend.
Do I need to sign up or install anything?
No. Open the page and go—no account, no client download, PWA offline cache supported.
How large can files be?
Depends on browser memory; multi-MB data usually runs smoothly. Split very large files or use merge & clean first.