API Response Formatter — JSON XML YAML
Pretty-print API responses as JSON, XML, or YAML with download
How to Use This Tool
- Paste API response into textarea.
- Select JSON, XML, or YAML output format.
- Debounced formatter runs three hundred ms after input stabilizes.
- JSON path uses JSON.parse and stringify indent two.
- XML and YAML apply format-specific transforms with error display.
About This Tool
VSPIC API response formatter accepts raw API response text and reformats as indented JSON, line-broken XML, or YAML derived from JSON parse — switch format with toggle buttons, live debounced preview, copy and download per format.
JSON mode validates parse before indent. XML mode adds newlines between tags heuristically. YAML mode walks object structure — best for JSON-origin APIs.
Common use cases
- •Inspect HTTP headers and user-agent strings
- •Analyze email headers for phishing investigation
- •Generate strong passwords for staging environments
Multi-format debugging
Legacy SOAP APIs return XML while modern REST returns JSON — one tool prettifies both during migration projects without switching websites.
JSON pretty print path
Invalid JSON shows parse error — fix syntax or switch format if payload actually XML mislabeled.
XML heuristic formatting
Regex-based tag line breaks improve readability but do not validate against XSD — malformed XML may format oddly.
YAML from JSON
YAML output parses JSON first — XML input should use XML mode not YAML unless converted externally.
Download exports
Save response.json, response.xml, or response.yaml for attachment to Jira tickets documenting third-party API behavior.
Client-side confidentiality
OAuth token responses and PII containing API JSON stay in browser during formatting.
Large response handling
Megabyte responses may lag browser — trim payload or use CLI formatters for huge log dumps.
Comparison to json-formatter-validator
Dedicated JSON tool adds minify. API response formatter adds XML YAML for polyglot workflows.
Log pipeline use
Paste single-line production log JSON, pretty print, identify nested error field quickly.
Teaching data formats
Students see same object in JSON and YAML side by side understanding serialization equivalence.
Frequently Asked Questions
Yes. VSPIC offers this API response formatter at no cost with no account required. Results load in real time.
We do not permanently store your queries on our servers. Some tools run entirely in your browser; others fetch public data for the request only.
Yes. Open the page in any modern phone or tablet browser. Results work on Wi‑Fi and mobile data.
Formatting only — no schema validation.
YAML mode expects JSON-parseable input — convert XML separately first.
Use json-formatter-validator minify button.
Client-side formatting.
Text formats only — not hex or protobuf.
Manual format selection — no auto sniff.
Next step for your check
Continue with json formatter & validator on VSPIC.
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