Paste messy JSON, get a clean, indented result.
A fast, privacy-first formatting surface. Drop in minified or inconsistent JSON and get readable, properly indented output instantly.
{ "deploy": { "service": "api-gateway", "region": "eu-west-1", "replicas": 3, "env": { "LOG_LEVEL": "debug", "TIMEOUT_MS": 2500 }, "health": true, "notes": null } }
# 13 lines · 208 chars
About this tool
Why formatting matters
Minified API responses and compact config files are hard to scan by eye. Formatting reintroduces indentation and line breaks so nested structures read like an outline instead of a wall of text.
jsonglow's formatter re-emits your JSON with consistent spacing, letting you choose 2-space, 4-space, or tab indentation depending on your project's style.
Capabilities
What it does
Instant reformatting
Paste and get properly indented JSON immediately, no button required.
Adjustable indent
Switch between 2-space, 4-space, or tab indentation to match your codebase.
Type-aware coloring
Keys, strings, numbers and literals are each colored for fast scanning.
Zero upload
Formatting runs entirely in your browser — nothing is sent to a server.
03 · FAQ
Quick answers.
Is this JSON formatter free?+
Yes, completely free with no signup or usage limits.
Does it upload my data?+
No — all formatting happens client-side in your browser.
What if my JSON has a syntax error?+
The formatter will flag it. For detailed line/column diagnostics, use the JSON Validator instead.
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